Archive for the ‘Hot Articles’ Category

Nitrogen Reduction By Homogeneous Fe Complexes Revisited

Geographer Vaclav Smil described the Haber-Bosch process as the “detonator of the human population explosion” in the twentieth century, in his Nature Millennium Essay.1 Today, nearly 80% of nitrogen atoms in human tissue have been through the Haber-Bosch process;2 where nitrogen gas is converted to ammonia converted into industrial fertilizers.

The Haber-Bosch process has now entered its second century. High temperatures and pressures and a catalyst composed of magnetite (Fe3O4), wüstite (FeO) and iron(0) metal,  push the equilibrium of a mixture of pure hydrogen, nitrogen and ammonia gas towards the formation of ammonia.  Today, one of the greatest challenges of industrial chemistry is to find an alternative catalyst and process.

In 1991 Leigh et. al. reported the nitrogen of nitrogen by a homogeneous Fe complex with two chelating phosphine ligands.3 They were able to reduce N2 to ammonia (isolated as NH4+) under strongly acidic conditions. However, following this discovery, verification and mechanistic questions remained.

The previously unreported dimer

In a recent article, ‘Teaching old compounds new tricks: efficient N2 fixation by simple Fe(N2)(diphosphine)2 complexes‘ published in Dalton Transactions, , Ashley and co-workers report their investigation of the Leigh compound. They have persued a peak that was previously unaccounted for in the 31P NMR spectrum which has led them to isolate a unique dimer of this complex, bridged by molecular N2.  Comparing the reactivities of this dimer with the two monomers that feature different simple chelating phosphine ligands, they unambiguously report yields of NH3 and N2H4 after reaction with triflic acid, and discern dependences based on ligand, temperature, and solvent.

This hitherto unreported dimeric compound, and the impressive NH3/N2H4 yields achieved with the monomers tested, add a significant piece to the puzzle of how iron-mediated N2 activation occurs.

Read the full article here:

Teaching old compounds new tricks: efficient N2 fixation by simple Fe(N2)(diphosphine)2 complexes
Laurence R. Doyle, Peter J. Hill, Gregory G. Wildgoose and Andrew E. Ashley
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C6DT00884D

1V. Smil Nature 1999, 400, 415.

2R. W. Howarth Harmful Algae 2008, 8, 14.

3J. G. Leigh and M. Jimenez-Tenorio, J. Am. Chem. Soc., 1991, 113, 5862.

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

2016 Dalton HOT articles

Take a look at our HOT articles for 2016 which are free to access for 4 weeks and will be updated regularly so keep checking! These have also been compiled into a collection for viewing on our website.

Monoanionic bis(carbene) pincer complexes featuring cobalt(I–III) oxidation states
Abdulrahman D. Ibrahim, Kenan Tokmic, Marshall R. Brennan, Dongyoung Kim, Ellen M. Matson, Mark J. Nilges, Jeffery A. Bertke and Alison R. Fout*
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT04723D

graphical abstract

Free to access until 4th July 2016



Developing nitrosocarborane chemistry
Samuel L. Powley, Louise Schaefer, Wing. Y. Man, David Ellis, Georgina M. Rosair and Alan J. Welch*
Dalton Trans., 2016, 45, 3635-3647
DOI: 10.1039/C5DT04831A

graphical abstract

Free to access until 4th July 2016



Room temperature carbon(CO)–carbon(α) bond activation of ketones by rhodium(II) porphyrins with water
Siu Yin Lee, Shiyu Feng and Kin Shing Chan*
Dalton Trans., 2016, 45, 3522-3527
DOI: 10.1039/C5DT04149J

graphical abstract

Free to access until 4th July 2016



Dinuclear ruthenium(II) complexes containing one inert metal centre and one coordinatively-labile metal centre: syntheses and biological activities
Xin Li, Kirsten Heimann, Fangfei Li, Jeffrey M. Warner, F. Richard Keene* and J. Grant Collins*
Dalton Trans., 2016, 45, 4017-4029
DOI: 10.1039/C5DT04885K

graphical abstract

Free to access until 4th July 2016


Defects and disorder in metal organic frameworks
Anthony K. Cheetham,* Thomas D. Bennett, François-Xavier Coudert and Andrew L. Goodwin*
Dalton Trans., 2016, 45, 4113-4126
DOI: 10.1039/C5DT04392A

graphical abstract

Free to access until 4th July 2016


Thermal degradation mechanism of triangular Ag@SiO2 nanoparticles
Mahesh K. Gangishetty, Robert W. J. Scott* and Timothy L. Kelly*
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C6DT00169F

graphical abstract

Free to access until 4th July 2016



A very peculiar family of N-heterocyclic phosphines: unusual structures and the unique reactivity of 1,3,2-diazaphospholenes
D. Gudat
Dalton Trans., 2016, 45, 5896-5907
DOI: 10.1039/C6DT00085A

graphical abstract

Free to access until 4th July 2016



Triphos derivatives and diphosphines as ligands in the ruthenium-catalysed alcohol amination with NH3
N. Nakagawa, E. J. Derrah, M. Schelwies, F. Rominger, O. Trapp and T. Schaub*
Dalton Trans., 2016, 45, 6856-6865
DOI: 10.1039/C5DT04870B

graphical abstract

Free to access until 4th July 2016


Anionic and zwitterionic carboranyl N-heterocyclic carbene Au(I) complexes
Steven P. Fisher, Ahmad El-Hellani, Fook S. Tham and Vincent Lavallo*
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C6DT00551A

graphical abstract

Free to access until 4th July 2016


Increasing anti-cancer activity with longer tether lengths of group 9 Cp* complexes
Stephanie. J. Lucas, Rianne M. Lord, Aida M. Basri, Simon J. Allison, Roger M. Phillips, A. John Blacker and Patrick C. McGowan*
Dalton Trans., 2016, 45, 6812-6815
DOI: 10.1039/C6DT00186F

graphical abstract

Free to access until 4th July 2016



Structurally versatile phosphine and amine donors constructed from N-heterocyclic olefin units
Nathan R. Paisley, Melanie W. Lui, Robert McDonald, Michael J. Ferguson and Eric Rivard*
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C6DT00299D

graphical abstract

Free to access until 4th July 2016



Homoleptic and heteroleptic bis-NHC Cu(I) complexes as carbene transfer reagents
Orlando Santoro, Faïma Lazreg, David B. Cordes, Alexandra M. Z. Slawin and Catherine S. J. Cazin*
Dalton Trans., 2016, 45, 4970-4973
DOI: 10.1039/C6DT00595K

graphical abstract

Free to access until 4th July 2016


Assessing the reactivity of sodium alkyl-magnesiates towards quinoxaline: single electron transfer (SET) vs. nucleophilic alkylation processes
Zoe Livingstone, Alberto Hernán-Gómez, Sharon E. Baillie, David R. Armstrong, Luca M. Carrella, William Clegg, Ross W. Harrington, Alan R. Kennedy, Eva Rentschler and Eva Hevia
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT04044B

graphical abstract

Free to access until 18th March 2016


Water based scale-up of CPO-27 synthesis for nitric oxide delivery
Damiano Cattaneo, Stewart J. Warrender, Morven J. Duncan, Richard Castledine, Nigel Parkinson, Ian Haley and Russell E. Morris
Dalton Trans., 2016, 45, 618-629
DOI: 10.1039/C5DT03955J

graphical abstract

Free to access until 18th March 2016


Binding small molecules and ions to [Fe4S4Cl4]2− modulates rate of protonation of the cluster
Thaer M. M. Al-Rammahia and Richard A. Henderson
Dalton Trans., 2016, 45, 1373-1381
DOI: 10.1039/C5DT04523A

graphical abstract

Free to access until 18th March 2016


A vacuum-annealing strategy for improving near-infrared super long persistent luminescence in Cr3+ doped zinc gallogermanate nanoparticles for bio-imaging
Jian Yang, Yuxue Liu, Duanting Yan, Hancheng Zhu, Chunguang Liu, Changshan Xu, Li Mab and Xiaojun Wang
Dalton Trans., 2016, 45, 1364-1372
DOI: 10.1039/C5DT03875H

graphical abstract

Free to access until 18th March 2016


Hydrophobic and antioxidant effects in In, Sn, and Sb based two dimensional materials
Keisuke Takahashi and Lauren Takahashi
Dalton Trans., 2016, 45, 3244-3246
DOI: 10.1039/C5DT04542H

graphical abstract

Free to access until 18th March 2016


A pH-responsive folate conjugated magnetic nanoparticle for targeted chemo-thermal therapy and MRI diagnosis
Jagriti Gupta, Jeotikanta Mohapatra, Parag Bhargava and D. Bahadur
Dalton Trans
., 2016, 45, 2454-2461
DOI
: 10.1039/C5DT04135J

graphical abstract

Free to access until 18th March 2016


Cobalt complexes of tetradentate, bipyridine-based macrocycles: their structures, properties and photocatalytic proton reduction
E. Joliat, S. Schnidrig, B. Probst, C. Bachmann, B. Spingler, K. K. Baldridge, F. von Rohr, A. Schilling and R. Alberto
Dalton Trans., 2016, 45, 1737-1745
DOI: 10.1039/C5DT04426J

graphical abstract

Free to access until 18th March 2016


Synthetic, structural, and computational investigations of N-alkyl benzo-2,1,3-selenadiazolium iodides and their supramolecular aggregates
Lucia M. Lee, Victoria B. Corless, Michael Tran, Hilary Jenkins, James F. Britten and Ignacio Vargas-Baca
Dalton Trans., 2016, 45, 3285-3293
DOI: 10.1039/C5DT04314J

graphical abstract

Free to access until 18th March 2016


Local structure of the metal–organic perovskite dimethylammonium manganese(II) formate
Helen D. Duncan, Martin T. Dove, David A. Keen and Anthony E. Phillips
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03687A

graphical abstract

Free to access until 18th March 2016


Cyclometalated Ir(III) complexes of deprotonated N-methylbipyridinium ligands: effects of quaternised N centre position on luminescence
Benjamin J. Coe, Madeleine Helliwell, James Raftery, Sergio Sánchez, Martyn K. Peers and Nigel S. Scrutton
Dalton Trans., 2015, 44, 20392-20405
DOI: 10.1039/C5DT03753K

graphical abstract

Free to access until 19th February 2016


Formation constants of copper(I) complexes with cysteine, penicillamine and glutathione: implications for copper speciation in the human eye
Lan-Chi Königsberger, Erich Königsberger, Glenn Hefter and Peter M. May
Dalton Trans., 2015, 44, 20413-20425
DOI: 10.1039/C5DT02129D

graphical abstract

Free to access until 19th February 2016



Assembly and stabilization of {E(cyclo-P3)2} (E = Sn, Pb) as a bridging ligand spanning two triaryloxyniobium units
Alexandra Velian, Brandi M. Cossairt and Christopher C. Cummins
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03383G

graphical abstract

Free to access until 19th February 2016


Neutral N-donor ligand based flexible metal–organic frameworks
Biplab Manna, Aamod V. Desai and Sujit K. Ghosh
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03443D

graphical abstract

Free to access until 19th February 2016



Encapsulation of dyes in metal–organic frameworks and their tunable nonlinear optical properties
Tao Song, Jiancan Yu, Yuanjing Cui, Yu Yang and Guodong Qian
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03466C

graphical abstract

Free to access until 19th February 2016



Mixed-linker solid solutions of functionalized pillared-layer MOFs – adjusting structural flexibility, gas sorption, and thermal responsiveness
Inke Schwedler, Sebastian Henke, Michael T. Wharmby, Sneha R. Bajpe, Anthony K. Cheetham and Roland A. Fischer
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03825A

graphical abstract

Free to access until 19th February 2016


NBu4SH provides a convenient source of HS− soluble in organic solution for H2S and anion-binding research
Matthew D. Hartle, Daniel J. Meininger, Lev N. Zakharov, Zachary J. Tonzetich and Michael D. Pluth
Dalton Trans., 2015, 44, 19782-19785
DOI: 10.1039/C5DT03355A

graphical abstract

Free to access until 19th February 2016



An effect of the substituent position and metal type on the electropolymerization properties of chalcone substituted metallophthalocyanines
Dilek Çakır, Tayfun Arslan and Zekeriya Biyiklioglu
Dalton Trans., 2015, 44, 20859-20866
DOI: 10.1039/C5DT03789A

graphical abstract

Free to access until 19th February 2016


User-friendly aerobic reductive alkylation of iridium(III) porphyrin chloride with potassium hydroxide: scope and mechanism
Huiping Zuo, Zhipeng Liu, Wu Yang, Zhikuan Zhou and Kin Shing Chan
Dalton Trans., 2015, 44, 20618-20625
DOI: 10.1039/C5DT03845F

graphical abstract

Free to access until 19th February 2016


Centrosymmetric and chiral porous thorium organic frameworks exhibiting uncommon thorium coordination environments
Yuxiang Li, Zhehui Weng, Yanlong Wang, Lanhua Chen, Daopeng Sheng, Yunhai Liu, Juan Diwu, Zhifang Chai, Thomas E. Albrecht-Schmitt and Shuao Wang
Dalton Trans., 2015, 44, 20867-20873
DOI: 10.1039/C5DT03363B

graphical abstract

ee to access until 19th February 2016


Unsolvated Al(C6F5)3: structural features and electronic interaction with ferrocene
Jiawei Chen and Eugene Y.-X. Chen
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03895B

graphical abstract

Free to access until 19th February 2016


An element through the looking glass: exploring the Au–C, Au–H and Au–O energy landscape
Dragoş-Adrian Roşca, Joseph A. Wright and Manfred Bochmann
Dalton Trans., 2015, 44, 20785-20807
DOI: 10.1039/C5DT03930D

graphical abstract

Free to access until 19th February 2016


Novel triazolium based 11th group NHCs: synthesis, characterization and cellular response mechanisms
M. Pellei, V. Gandin, M. Marinelli, A. Orsetti, F. Del Bello, C. Santini and C. Marzano
Dalton Trans., 2015, 44, 21041-21052
DOI: 10.1039/C5DT02934A

graphical abstract

Free to access until 19th February 2016




Regioselectivity in C–H activation: reagent control in cyclometallation of 2-(1-naphthyl)-pyridine

Mikhail Kondrashov, David Provost and Ola F. Wendt
Dalton Trans., 2016, 45, 525-531
DOI: 10.1039/C5DT04068J

graphical abstract

Free to access until 19th February 2016


A single molecule magnet to single molecule magnet transformation via a solvothermal process: Fe4Dy2 → Fe6Dy3
Sihuai Chen, Valeriu Mereacre, Christopher E. Anson and Annie K. Powell
Dalton Trans., 2016, 45, 98-106
DOI: 10.1039/C5DT03909F

graphical abstract

Free to access until 19th February 2016


Smallest molecular chalcogenidometalate anions of the heaviest metals: syntheses, structures, and their interconversion
G. Thiele, C. Donsbach, R. Riedel, M. Marsch, K. Harms and S. Dehnen
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03996G

graphical abstract

Free to access until 19th February 2016

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

End of year HOT articles!

December 2015’s HOT articles are here and free to access. These have also been compiled into a collection on our website.

Switching the orientation of Jahn–Teller axes in oxime-based MnIII dimers and its effect upon magnetic exchange: a combined experimental and theoretical study
Priyanka Comar, Thayalan Rajeshkumar, Gary S. Nichol, Mateusz B. Pitak, Simon J. Coles, Gopalan Rajaraman and Euan K. Brechin
Dalton Trans., 2015, 44, 19805-19811
DOI: 10.1039/C5DT03615A

graphical abstract

Free to access until 23rd December 2015


Coordination chemistry of 2,2′-biphenylenedithiophosphinate and diphenyldithiophosphinate with U, Np, and Pu
Joseph A. Macor, Jessie L. Brown, Justin N. Cross, Scott R. Daly, Andrew J. Gaunt, Gregory S. Girolami, Michael T. Janicke, Stosh A. Kozimor, Mary P. Neu, Angela C. Olson, Sean D. Reilly and Brian L. Scott
Dalton Trans., 2015, 44, 18923-18936
DOI: 10.1039/C5DT02976G

graphical abstract

Free to access until 23rd December 2015


Mechanistic features of the copper-free Sonogashira reaction from ESI-MS
Zohrab Ahmadi, Lars P. E. Yunker, Allen G. Oliver and J. Scott McIndoe
Dalton Trans., 2015, 44, 20367-20375
DOI: 10.1039/C5DT02889B

graphical abstract

Free to access until 23rd December 2015


First structural characterization of Pa(IV) in aqueous solution and quantum chemical investigations of the tetravalent actinides up to Bk(IV): the evidence of a curium break
Nidhu lal Banik, Valérie Vallet, Florent Réal, Réda Mohamed Belmecheri, Bernd Schimmelpfennig, Jörg Rothe, Rémi Marsac, Patric Lindqvist-Reis, Clemens Walther, Melissa A. Denecke and Christian M. Marquardt
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03560K

graphical abstract

Free to access until 23rd December 2015


Compositional dependence of anomalous thermal expansion in perovskite-like ABX3 formates
Ines E. Collings, Joshua A. Hill, Andrew B. Cairns, Richard I. Cooper, Amber L. Thompson, Julia E. Parker, Chiu C. Tang and Andrew L. Goodwin
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03263F

graphical abstract

Free to access until 23rd December 2015


Modular solid-phase synthesis, catalytic application and efficient recycling of supported phosphine–phosphite ligand libraries
Frank J. L. Heutz and Paul C. J. Kamer
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03226A

graphical abstract

Free to access until 23rd December 2015


Synthesis and controlled growth of osmium nanoparticles by electron irradiation
Anaïs Pitto-Barry, Luis M. A. Perdigao, Marc Walker, James Lawrence, Giovanni Costantini, Peter J. Sadler and Nicolas P. E. Barry
Dalton Trans., 2015, 44, 20308-20311
DOI: 10.1039/C5DT03205A

graphical abstract

Free to access until 23rd December 2015


Palladium(II) complexes featuring a mixed phosphine–pyridine–iminophosphorane pincer ligand: synthesis and reactivity
Thibault Cheisson and Audrey Auffrant
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT02789F

graphical abstract

Free to access until 23rd December 2015


Explaining the mechanical mechanisms of zeolitic metal–organic frameworks: revealing auxeticity and anomalous elasticity
Matthew. R. Ryder and Jin-Chong Tan
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03514G

graphical abstract

Free to access until 23rd December 2015


The structures of CyMe4-BTBP complexes of americium(III) and europium(III) in solvents used in solvent extraction, explaining their separation properties
Christian Ekberg, Elin Löfström-Engdahl, Emma Aneheim, Mark R. StJ. Foreman, Andreas Geist, Daniel Lundberg, Melissa Denecke and Ingmar Persson
Dalton Trans., 2015, 44, 18395-18402
DOI: 10.1039/C5DT02859K

graphical abstract

Free to access until 23rd December 2015


Stepwise assembly of mixed-metal coordination cages containing both kinetically inert and kinetically labile metal ions: introduction of metal-centred redox and photophysical activity at specific sites
Ashley B. Wragg, Alexander J. Metherell, William Cullen and Michael D. Ward
Dalton Trans., 2015, 44, 17939-17949
DOI: 10.1039/C5DT02957K

graphical abstract

Free to access until 23rd December 2015


Tin sulfide and selenide clusters soluble in organic solvents with the core structures of Sn4S6 and Sn4Se6
Mingdong Zhong, Zhi Yang, Yafei Yi, Dongxiang Zhang, Kening Sun, Herbert W. Roesky and Ying Yang
Dalton Trans., 2015, 44, 19800-19804
DOI: 10.1039/C5DT03244J

graphical abstract

Free to access until 23rd December 2015

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

October’s HOT articles

HOT articles for October are below and free to acess for 4 weeks. These have also been compiled into a collection on our website.

Phosphole formation by 1,1-carboboration – reactions of bis-alkynyl phosphanes with a frustrated P/B Lewis pair
Annika Klose, Gerald Kehr, Constantin G. Daniliuc and Gerhard Erker
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03055B

graphical abstract

Free to access until 5th November 2015


The carboboration of Me3Si-substituted alkynes and allenes with boranes and borocations
James R. Lawson, Valerio Fasano, Jessica Cid, Inigo Vitorica-Yrezabal and Michael J. Ingleson
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03003J

graphical abstract

Free to access until 5th November 2015

 


Transition metal-mediated donor–acceptor coordination of low-oxidation state Group 14 element halides
Anindya K. Swarnakar, Michael J. Ferguson, Robert McDonald and Eric Rivard
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT03018H

graphical abstract

Free to access until 5th November 2015

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

September’s HOT articles

September’s selection of HOT articles are below. These are free to acess for 4 weeks and available for viewing in a collection on our website.

Coordination polymers from a highly flexible alkyldiamine-derived ligand: structure, magnetism and gas adsorption studies
Chris S. Hawes, Nicholas F. Chilton, Boujemaa Moubaraki, Gregory P. Knowles, Alan L. Chaffee, Keith S. Murray, Stuart R. Batten and David R. Turner
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT02323H

Graphical Abstract

Free to access until 16th October 2015


Dinuclear iridium and rhodium complexes with bridging arylimidazolide-N3,C2 ligands: synthetic, structural, reactivity, electrochemical and spectroscopic studies
Fan He, Laurent Ruhlmann, Jean-Paul Gisselbrecht, Sylvie Choua, Maylis Orio, Marcel Wesolek, Andreas A. Danopoulos and Pierre Braunstein
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT02403J

Graphical Abstract

Free to access until 16th October 2015


Elucidating the mechanism responsible for anomalous thermal expansion in a metal–organic framework
Dewald P. van Heerden, Catharine Esterhuysen and Leonard J. Barbour
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT01927C

Graphical Abstract

Free to access until 16th October 2015


Polyfluorinated carba-closo-dodecaboranes with amino and ammonio substituents bonded to boron
Szymon Z. Konieczka, Michael Drisch, Katharina Edkins, Michael Hailmann and Maik Finze
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT02055G

Graphical Abstract

Free to access until 16th October 2015


Albumin binding and ligand-exchange processes of the Ru(III) anticancer agent NAMI-A and its bis-DMSO analogue determined by ENDOR spectroscopy
Michael I. Webb and Charles J. Walsby
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT02021B

Graphical Abstract

Free to access until 16th October 2015


Synthetic strategies to bicyclic tetraphosphanes using P1, P2 and P4 building blocks
Jonas Bresien, Kirill Faust, Christian Hering-Junghans, Julia Rothe, Axel Schulz and Alexander Villinger
Dalton Trans., 2016, Advance Article
DOI: 10.1039/C5DT02757H

Graphical Abstract

Free to access until 16th October 2015

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

August’s HOT articles

August’s HOT articles are below. These are free to acess for 4 weeks and available for viewing in a collection on our website.

Dual luminescence in solid CuI(piperazine): hypothesis of an emissive 1-D delocalized excited state
L. Maini, D. Braga, P. P. Mazzeo, L. Maschio, M. Rérat, I. Manet and B. Ventura
Dalton Trans., 2015, 44, 13003-13006
DOI: 10.1039/C5DT02204E

Graphical Abstract

Free to access until 26th August 2015


Cyclodextrin-based PNN supramolecular assemblies: a new class of pincer-type ligands for aqueous organometallic catalysis
S. Menuel, E. Bertaut, E. Monflier and F. Hapiot
Dalton Trans., 2015, 44, 13504-13512
DOI: 10.1039/C5DT01825K

Graphical Abstract

Free to access until 26th August 2015


Dipyrrolylquinoxaline difluoroborates with intense red solid-state fluorescence
Changjiang Yu, Erhong Hao, Tingting Li, Jun Wang, Wanle Sheng, Yun Wei, Xiaolong Mu and Lijuan Jiao
Dalton Trans., 2015, 44, 13897-13905
DOI: 10.1039/C5DT02012C

Graphical Abstract

Free to access until 26th August 2015
Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

July’s HOT articles

Take a look at our HOT articles for July. These are only free to acess for 4 weeks only and are available for viewing in a collection on our website.

A mononuclear Ni(II) complex: a field induced single-molecule magnet showing two slow relaxation processes
Jozef Miklovič, Dušan Valigura, Roman Boča and Ján Titiš
Dalton Trans., 2015, 44, 12484-12487
DOI: 10.1039/C5DT01213A

Graphical Abstract

  

Free to access until 6th August 2015 

 


 ZnII and HgII binding to a designed peptide that accommodates different coordination geometries
Dániel Szunyogh, Béla Gyurcsik, Flemming H. Larsen, Monika Stachura, Peter W. Thulstrup, Lars Hemmingsen and Attila Jancsó
Dalton Trans., 2015, 44, 12576-12588
DOI: 10.1039/C5DT00945F 

Graphical Abstract 

Free to access until 6th August 2015  


 

Photophysical tuning of the aggregation-induced emission of a series of para-substituted aryl bis(imino)acenaphthene zinc complexes
Daniel A. Evans, Lucia Myongwon Lee, Ignacio Vargas-Baca and Alan H. Cowley
Dalton Trans., 2015, 44, 11984-11996
DOI: 10.1039/C5DT01529D 

Graphical Abstract

Free to access until 6th August 2015


An investigation into the photochemistry of, and the electrochemically induced CO-loss from, [(CO)5MC(OMe)Me](M = Cr or W) using low-temperature matrix isolation, picosecond infrared spectroscopy, cyclic voltammetry, and time-dependent density functional theory
Suzanne McMahon, Saeed Amirjalayer, Wybren J. Buma, Yvonne Halpin, Conor Long, A. Denise Rooney, Sander Woutersen and Mary T. Pryce
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT01568E

Graphical Abstract

Free to access until 6th August 2015


Aza-macrocyclic complexes of the Group 1 cations – synthesis, structures and density functional theory study
John Dyke, William Levason, Mark E. Light, David Pugh, Gillian Reid, Hanusha Bhakhoa, Ponnadurai Ramasami and Lydia Rhyman 
Dalton Trans., 2015, Advance Article 
DOI: 10.1039/C5DT01865J  

Graphical Abstract

Free to access until 6th August 2015


As-stereogenic C2-symmetric organoarsines: synthesis and enantioselective self-assembly into a dinuclear triple-stranded helicate with copper iodide
Hiroki Adachi, Hiroaki Imoto, Seiji Watase, Kimihiro Matsukawa and Kensuke Naka
Dalton Trans., 2015, Advance Article 
DOI: 10.1039/C5DT01490E  

Graphical Abstract

Free to access until 6th August 2015

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

New HOT articles

Take a look at our HOT articles for May. These are only free to acess for 4 weeks only and are available for viewing in a collection on our website

Synthesis of CuInS2 nanocrystals from a molecular complex – characterization of the orthorhombic domain structure
Jorge L. Cholula-Díaz, Gerald Wagner, Dirk Friedrich, Oliver Oeckler and Harald Krautscheid
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT00419E

Graphical Abstract

 

Free to access until 30th June 2015


A cascade approach to hetero-pentanuclear manganese-oxide clusters in polyoxometalates and their single-molecule magnet properties
Kosuke Suzuki, Rinta Sato, Takuo Minato, Masahiro Shinoe, Kazuya Yamaguchi and Noritaka Mizuno
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT01363A

Graphical Abstract

 

Free to access until 30th June 2015


 

Quantum chemical and solution phase evaluation of metallocenes as reducing agents for the prospective atomic layer deposition of copper
Gangotri Dey, Jacqueline S. Wrench, Dirk J. Hagen, Lynette Keeney and Simon D. Elliott
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT00922G

Graphical Abstract

Free to access until 16th June 2015


Synthesis of copper ion incorporated horseradish peroxidase-based hybrid nanoflowers for enhanced catalytic activity and stability
Burcu Somturk, Mehmet Hancer, Ismail Ocsoy and Nalan Özdemir
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT01250C

Graphical Abstract

Free to access until 16th June 2015


Platinum carbon bond formation via Cu(I) catalyzed Stille-type transmetallation: reaction scope and spectroscopic study of platinum-arylene complexes
Ali S. Gundogan, Xiangli Meng, Russell W. Winkel and Kirk S. Schanze
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT00538H

Graphical Abstract

Free to access until 16th June 2015


Exceptionally rapid CO release from a manganese(I) tricarbonyl complex derived from bis(4-chloro-phenylimino)acenaphthene upon exposure to visible light
Samantha J. Carrington, Indranil Chakraborty and Pradip K. Mascharak
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT01007A

Graphical Abstract

Free to access until 16th June 2015


5-(Fluorodinitromethyl)-2H-tetrazole and its tetrazolates – Preparation and Characterization of New High Energy Compounds
Ralf Haiges and Karl O. Christe
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT00291E 

Graphical Abstract

Free to access until 25th May 2015


Synthesis of magnesium ZIF-8 from Mg(BH4)2
S. Horike, K. Kadota, T. Itakura, M. Inukai and S. Kitagawa
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT01183C 

Graphical Abstract 

Free to access until 25th May 2015

 


16-Electron pentadienyl- and cyclopentadienyl-ruthenium half-sandwich complexes with bis(imidazol-2-imine) ligands and their use in catalytic transfer hydrogenation
Thomas Glöge, Kristof Jess, Thomas Bannenberg, Peter G. Jones, Nadine Langenscheidt-Dabringhausen, Albrecht Salzer and Matthias Tamm
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT01080B 

Graphical Abstract 

Free to access until 25th May 2015 


 

Structural and electronic characterization of multi-electron reduced naphthalene (BIAN) cobaloximes
Owen M. Williams, Alan H. Cowley and Michael J. Rose
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT00924C 

Graphical Abstract 

Free to access until 25th May 2015

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

March’s HOT articles

Take a look at HOT articles for March. These are only free to acess for 4 weeks only and are available for viewing in a collection on our website.

An ionic liquid process for mercury removal from natural gas
Mahpuzah Abai, Martin P. Atkins, Amiruddin Hassan, John D. Holbrey, Yongcheun Kuah, Peter Nockemann, Alexander A. Oliferenko, Natalia V. Plechkova, Syamzari Rafeen, Adam A. Rahman, Rafin Ramli, Shahidah M. Shariff, Kenneth R. Seddon, Geetha Srinivasan and Yiran Zou 
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C4DT03273J

Graphical Abstract

Free to access until 24th April 2015


Relationship between crystal structure and thermo-mechanical properties of kaolinite clay: beyond standard density functional theory
Philippe F. Weck, Eunja Kim and Carlos F. Jové-Colón
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT00590F

Graphical Abstract

Free to access until 23rd April 2015


The titanium tris-anilide cation [Ti(N[tBu]Ar)3]+ stabilized as its perfluoro-tetra-phenylborate salt: structural characterization and synthesis in connection with redox activity of 4,4′-bipyridine dititanium complexes
Heather A. Spinney, Christopher R. Clough and Christopher C. Cummins
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT00105F

Graphical Abstract

Free to access until 14th April 2015


Iridium–bipyridine periodic mesoporous organosilica catalyzed direct C–H borylation using a pinacolborane
Yoshifumi Maegawa and Shinji Inagaki
Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT00239G

Graphical Abstract

Free to access until 14th April 2015

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

A Cagey Conundrum

“My original intention in the late 1940s was to spend a few years understanding the boranes, and then to discover a systematic valence description of the vast numbers of electron deficient intermetallic compounds. I have made little progress toward this latter objective,” said the late Professor William N. Lipscomb in his 1976 Nobel acceptance speech.1

In their recent Dalton Transactions Hot Article, Jose M. Goicoechea and John E. McGrady examine the chemistry of main group cluster-encapsulated transition metal atoms, laying another piece of the foundation of Lipscomb’s “latter objective.”

The authors assign themselves an ambitious task: to provide a system to predict the geometries of cages of the tetrel elements (C, Si, Ge, Sn, Pb) which encapsulate transition metal atoms.  They focus on six high-symmetry cage structures, shown below, which have been observed for tetrel-encapsulated metal atoms (denoted M@Ex, for example Ni@Ge12.).

The six three-dimensional cage geometries examined.

Lipscomb’s elegantly-described closo, nido, and arachno borane structures (“closed,”“nest”, and “spider’s web,” respectively) provided an initial basis for classifications of cages.  Later, the Wade/Mingos rules laid the foundation for predicting the geometries based on the electronic structure of the cluster.

Goicoechea and McGrady use the total valence electron count –  of the tetrel cages, plus the d-electron count of the encapsulated metal – to describe patterns in the structures.  Nevertheless, some results defy electron-count classification, for example, the preference of silicon cages to form D6h-symmetric hexagonal prisms in M@Si12 complexes, in contrast to the M@Ge12 analogues.

It is a broad, big-picture paper, a synthesis of a wide range of experimental and theoretical results.  Some structures are known experimentally from x-ray crystallography, some have only been predicted computationally.  The authors discuss the varying relevance of considering the d-electron counts of the metals, and technological implications such as quenching of the magnetic moment of encapsulated metal atoms.  For me, the scope alone made this a worthwhile read.

Read the full article now:

On the structural landscape in endohedral silicon and germanium clusters, M@Si12 and M@Ge12
José M. Goicoechea and John E. McGrady
Dalton Trans., 2015, DOI: 10.1039/C4DT03573A

1 Lipscomb, W.N. “The Boranes and Their Relatives” in Les Prix Nobel en 1976. Imprimerie Royal PA Norstedt & Soner, Stockholm, 1977


Ian Mallov Ian Mallov is currently a Ph.D. student in Professor Doug Stephan’s group at the University of Toronto. His research is focused on synthesizing new Lewis-acidic compounds active in Frustrated Lewis Pair chemistry. He grew up in Truro, Nova Scotia and graduated from Dalhousie University and the University of Ottawa, and worked in chemical analysis in industry for three years before returning to grad school.
Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)