Author Archive

Photocrystallography provides isomeric answers

Mike George, Paul Raithby and co-workers using photocrystallography to identify isomers in a nickel complex. Photocrystallography allows the groups to study metastable linkage isomers and they have shown that the technique provides scope for the identification of new species.

Photocrystallography involves the photo-activation of species within a crystalline lattice. It brings a dynamic aspect to X-ray crystallographic experiments, so that reactions within a crystal can be monitored as they occur or the structures of molecules in metastable or short-lived photo-activated states can be determined. Read more about the group’s findings in their Dalton Transactions Hot Article:

Photocrystallographic identification of metastable nitrito linkage isomers in a series of nickel(II) complexes
Simon K. Brayshaw, Timothy L. Easun, Michael W. George, Alexandra M. E. Griffin, Andrew L. Johnson, Paul R. Raithby, Teresa L. Savarese, Stefanie Schiffers, John E. Warren, Mark R. Warren and Simon J. Teat
Dalton Trans., 2011, DOI: 10.1039/C1DT11379H

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Hot Article: Very Vanadium

Phalguni Chaudhuri and colleagues, from the Max-Planck-Institut in Mulheim, Germany, investigate the interactions between a potentially tetradentate tripodal ligand and the biologically important metal, Vanadium. What were the resulting complexes? Find out in  their Hot Article – FREE to read until mid November.

Non-oxo 5-coordinate and 6-coordinate vanadium(IV) complexes with their precursor [LVIII(CH3OH)]0, where L = a trianionic aminetris(phenolate)-[N,O,O,O] donor ligand: a magnetostructural and EPR study
Takashi Kajiwara, Rita Wagner, Eckhard Bill, Thomas Weyhermüller and Phalguni Chaudhuri
Dalton Trans., 2011, DOI: 10.1039/C1DT11277E

 

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Hot Article: Chirality effects on star-burst complexes

In their Dalton Trans. Hot Article, a group of Japanese chemists led by Hisako Sato, used vibrational circular dichroism (VCD) spectroscopy to study the stereochemical properties of a star-burst type tetranuclear Ru(III) complex. By comparing the VCD spectra of eight diastereomeric enantiomers, they were able to see the homo- or hetero-chiral nature of the bridging part of the compound which connected the central core and the peripheral region

Chirality effects on core-periphery connection in a star-burst type tetranuclear Ru(III) complex: application of vibrational circular dichroism spectroscopy
Hisako Sato, Fumi Sato, Masahiro Taniguchi and Akihiko Yamagishi
Dalton Trans., 2012, Advance Article
DOI: 10.1039/C1DT11510C

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News from the 3rd Erlangen Symposium

Some of the speakers at Erlangen

Congratulations to Florian Pfaff from the Humboldt-Universität zu Berlin, Germany winner of the Dalton Transactions poster prize at the 3rd Erlangen Symposium earlier this month!

The symposium, organised by Professor Karsten Meyer, covered the topic of Redox-Active Metal Complexes: Control of Reactivity via Molecular Architecture and took place in from October 5th–October 8th, 2011 in Friedrich-Alexander-University Erlangen-Nuremberg in the north of Bavaria.

Professor Dan Nocera at a poster session

Redox-active metal complexes are central to many fundamental processes that involve redox transformations of small molecules of industrial and biological relevance, like H2O, N2, NO, H2, O2, CO, and CO2. Research devoted to identifying and mimicking the “structure-function” relationships, which govern the metal complex catalyzed reactions, is essential in order to design novel species capable of catalyzing industrially relevant small molecule transformations.

Speakers included Dan Nocera, Geoff Cloke, Kenneth Karlin, Wonwoo Nam, Paul Chirik, Serena DeBeer, Felix Castellano, Hiroyuki Kawaguchi, Lechoslaw Latos-Grazynski, Frank Neese, Moritz Sokolowski, Felix Tuczek, Michael Wasielewski and Jeremy Smith. This conference aimed to bring together international junior and senior experts to report on and discuss their current research in this field. The conference delegates also had the opportunity to see more of Bavaria on the social activities and of course, to sample the local beer!

More information on the meeting can be found here. And why not also find out more about some of the symposium’s speakers:

The latest ChemComm Highlight from Dan Nocera:
Photocatalytic hydrogen production
Thomas S. Teets and Daniel G. Nocera
Chem. Commun., 2011, 47, 9268-9274 DOI: 10.1039/C1CC12390D

Geoff Cloke’s recent themed issue:
Dalton Transactions Themed Issue on ‘New horizons in organo-f-block chemistry guest edited by Geoff Cloke.

Kenneth Karlin and Wonwoo Nam:
Spectroscopic and computational characterization of CuII–OOR (R = H or cumyl) complexes bearing a Me6-tren ligand
Yu Jin Choi, Kyung-Bin Cho, Minoru Kubo, Takashi Ogura, Kenneth D. Karlin, Jaeheung Cho and Wonwoo Nam
Dalton Trans., 2011, 40, 2234-2241, DOI: 10.1039/C0DT01036G, Paper
This article features in the recent themed issue New Talent: Asia

Find out more about Jeremy Smith in this recent Chemistry World interview

Check out Karsten’s recent Chemical Science Edge Article:
Activation of elemental S, Se and Te with uranium(III): bridging U–E–U (E = S, Se) and diamond-core complexes U–(E)2–U (E = O, S, Se, Te)
Oanh P. Lam, Frank W. Heinemann and Karsten Meyer
Chem. Sci., 2011, 2, 1538-1547 DOI: 10.1039/C1SC00151E

Paul Chirik’s latest Dalton Trans. article:
Cyclisation of α,ω-dienes promoted by bis(indenyl)zirconium sandwich and ansa-titanocene dinitrogen complexes
Doris Pun, Donald J. Knobloch, Emil Lobkovsky and Paul J. Chirik
Dalton Trans., 2011, 40, 7737-7747 DOI: 10.1039/C1DT10149

Were you at the meeting yourself? Or perhaps you also work on redox-active metal complexes? Tell us about your experience by posting a comment on this blog post below…..

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Jeremy Smith’s Desert Island Papers – Chemistry in verse?

Jermey Smith

We love Jeremy Smith’s recent list of desert island chemistry papers in his recent interview with Chemistry World. There is one paper in particular which Jeremy highlights which I am keen to point out to all you Dalton Trans. readers…… it is an old JOC paper written entirely in verse which is fantastic:

Comparative mobility of halogens in reactions of dihalobenzenes with potassium amide in ammonia
J F Bunnett and F J Kearley, 
J. Org. Chem., 1971, 36, 84, DOI: 10.1021/jo00800a036

Jeremy is based at New Mexico State University and works on metal complexes of strongly donating ligands, such as tris(carbene)borates and metal ligand multiple bonds.

Check out the full Chemistry World interview here: http://www.rsc.org/chemistryworld/News/2011/September/30091102.asp

 

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Unusual structure is ‘silver’ lining in Ag study

A team of scientists from Poland have been playing around with silver-pyrazine complexes and made an unusual crystal structure of a Ag(I) by–product in the process. Piotr J. Leszczyński, Wojciech Grochala and colleagues from Warsaw studied the decomposition of di(pyrazine)silver(II) peroxydisulfate under various heat and chemical processes.

Much work has been carried out on the copper analogue before this but only now is the silver version really being looked at. Read more in this recent Hot Article – FREE to read until the end of October:

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Thermal and chemical decomposition of di(pyrazine)silver(II) peroxydisulfate and unusual crystal structure of a Ag(I) by-product
Piotr J. Leszczyński, Armand Budzianowski, Łukasz Dobrzycki, Michał K. Cyrański, Mariana Derzsi and Wojciech Grochala
Dalton Trans., 2011, DOI: 10.1039/C1DT10744E

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Hot Article: Playing with the “P” in FLPs

Frustrated Lewis PairsFrustrated Lewis Pairs (FLPs) are usually a combination of a sterically hindered Lewis base (often phosphines or amines) and a sterically bulky Lewis acid (traditionally a bulky borane). The resulting ‘frustrated’ molecules are fantastically reactive – capable of cleaving dihydrogen, activating alkynes, boranes, olefins and even ring-opening THF and ethers. In their recent Dalton Trans. Hot Article, Doug Stephan and team play around with the Lewis acid element of this handy family and in the process they extend the activity of FLPs even further. Read more for free by clicking on the title of the article below and downloading the paper:

Chloro- and phenoxy-phosphines in frustrated Lewis pair additions to alkynes
Christopher B. Caputo, Stephen J. Geier, Eva Y. Ouyang, Christoph Kreitner and Douglas W. Stephan
Dalton Trans., 2011, DOI: 10.1039/C1DT11196E

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The Future of MOFs?

Neil Champness

We all know that MOFs are everywhere now but where are they going? Neil Champness provides us with his expert point of view on the future of metal-organic frameworks  in his recently published Dalton Transactions Frontier article. Find out where the challenges currently lie and the opportunities on the horizon for these hot hot compounds.

You can even download and read Neil’s exciting Frontier for free until the 4th October! Just click on the article title below:
The future of metal–organic frameworks
Neil R. Champness  
Dalton Trans., 2011, DOI: 10.1039/C1DT11184A

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Call for papers: Themed issue – Coordination Chemistry in the Solid State

We are pleased to announce an upcoming themed issue on the topic of Coordination Chemistry in the Solid State, guest edited by Dalton Transactions Associate Editor Russell Morris. It is our pleasure to invite you to contribute to this themed issue.

Over the last decade or so there has a tremendous explosion of coordination chemistry in the solid state, with a particular focus on coordination polymers and metal-organic frameworks. Such materials offer great promise for many applications – from gas storage, separation and catalysis to biomedicine.  In this themed issue we aim to highlight the importance of coordination chemistry in the solid state to all aspects of this field, with contributions from experts in the field involved in either the fundamental synthesis of new solids or in the multidisciplinary application of these fascinating materials, and any coordination polymer chemistry anywhere in between.

How do I submit?

All types of manuscript, Communications, Full Papers and Perspectives, will be considered for publication. We aim to publish this themed issue in early 2012 and therefore would like to receive manuscripts by 20th October 2011. The manuscript should be prepared according to the format for regular articles and should be submitted via our online system. All invited manuscripts will be subjected to the normal refereeing procedure.

Deadline for Submission: 20th October 2011

Please indicate on submission that your manuscript is intended for this themed issue and direct any questions to the Dalton Transactions Editorial Office

We invite you to also check out previous themed issues featuring in Dalton Transactions. Read them here now.

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Half-sandwich Ru compounds to combat cancer

Read the following Dalton Transactions Hot Article to find out which structures of Ru(II) half sandwich compounds are active as possible anti-cancer drugs and why face-capping ligand is all important in combating cancer cells……

Free to read until the 16th September!

New half sandwich-type Ru(II) coordination compounds characterized by the fac-Ru(dmso-S)3 fragment: influence of the face-capping group on the chemical behavior and in vitro anticancer activity
Ioannis Bratsos, Camilla Simonin, Ennio Zangrando, Teresa Gianferrara, Alberta Bergamo and Enzo Alessio
Dalton Trans., 2011, DOI: 10.1039/C1DT11043H

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