December 2015 – Dalton Transactions Blog

Archive for December, 2015

End of year HOT articles!

07 Dec 2015

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 23^rd 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 23^rd 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 23^rd 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 23^rd 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 23^rd 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 23^rd 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 23^rd 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 23^rd 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 23^rd 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 23^rd 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 23^rd 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 23^rd December 2015

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Professor Philip Mountford completes his final term as Chairman for Dalton Transactions

04 Dec 2015

Professor Philip Mountford (University of Oxford) will complete his final term as Chairman of Dalton Transactions’ Editorial Board at the end of December this year.

Philip, Chairman of the Editorial Board since January 2012, has been a fantastic ambassador for the Journal, representing Dalton Transactions at many conferences around the world. He has overseen 4 Editorial Board meetings (including at the 2013 Royal Society of Chemistry Editors’ Symposium in Brussels), guest edited two themed issues (Advances in metal-catalysed polymerisation and related transformations, and Earth Abundant Element Compounds in Homogeneous Catalysis) and chaired the Editorial and Advisory Boards of Dalton Transactions during a period of significant expansion of the Journal’s published volume.

He leaves Dalton Transactions in a very strong position, with the Journal reporting its highest ever impact factor for 2014 (4.19) and publishing over 2000 articles a year – the only weekly international journal for inorganic, organometallic and bioinorganic chemistry.

Philip (left) receives a framed portrait of John Dalton from Dalton Transactions' Deputy Editor Guy Jones

Philip’s work on the Journal was recognised at a presentation, held during one of his last engagements for Dalton Transactions – chairing the final session of the 2015 RSC Coordination and Organometallic Chemistry Discussion Group Meeting (Oxford, 3-4 September 2015), during which Professor Jason Love (University of Edinburgh) was the Dalton Transactions-sponsored Plenary lecturer.

This was an especially relevant meeting, as Philip is Head of Inorganic Chemistry and Professor of Organometallic Chemistry and Catalysis at Oxford.

Philip was presented with a framed portrait of John Dalton, the Journal’s namesake, as both a token of our appreciation and to commemorate the 250^th anniversary of John Dalton’s birth. Philip was also presented with a Dalton Transactions mug featuring the cover image of the 2013 themed issue that he guest edited.

Philip (Left) and Dalton Transactions' Publisher Jamie Humphrey visit a clean room during the 4th Dalton Transactions International Symposium

Among his numerous other important contributions and achievements during the past four years, Philip helped to celebrate the work of Dorothy Hodgkin, represented Dalton Transactions at its 4th International Symposium, and received the Schlenk Lectureship award in 2015.

Professor John Arnold (University of Berkeley, California) will succeed Philip as Chairman of the Editorial Board, from 1^st January 2016.

“I am delighted that John Arnold will be taking over as Chair of the Editorial Board,” said Philip. “I know that under his leadership the board and editors will take the journal on from strength to strength. I have been very privileged to work with an outstanding group of professionals in the Dalton Transactions Editorial team and an equally talented and dedicated board.”

Thank you, Philip! We’ve been very privileged to work with you.

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Adjusting the Pincer Pinch

02 Dec 2015

Professor Darrin Richeson’s group has carved out an interesting organometallic niche. Their papers feature low-valent metal complexes of pincer ligands combined with detailed computational analysis of the electronic structures. In their recent Dalton Transactions article they report unique coinage metal complexes of the “PN³P” ligand below.

This "PN3P" ligand

The judicious selection of this particular pincer framework resulted in complexes with geometric properties distinct from those of the same metals with other “PNP”-type ligands. Choosing the ligand with a NR instead of a NH spacer between the pyridine and phosphine moieties enhances the donor strength of the phosphines while rendering the N atoms inert towards deprotonation.

Subtle effects of this adjustment manifest themselves in dramatic changes in the solid-state coordination and geometric properties of their Cu and Ag complexes. Their reported CuBr complex is coordinated by one PN³P ligand and has a distorted trigonal pyramidal geometry. They contrast these to Cu(I) complexes of an analogous PN³P ligand with NH spacers, which coordinate two ligands and in one case displace the halide atom. Using CH₂ spacers, a previously reported Cu(I) structure exhibits T-shaped geometry and a non-coordinating triflate anion. The Cu(I) reported here shows a geometry much closer to trigonal pyramidal, with a coordinating triflate anion.

The second part of the paper discusses details of the electronic structure gleaned from DFT calculations. Particularly illuminating is a paragraph on page 19157, summarizing the particulars of the bonding as “a balance of bonding and antibonding interactions…diffuse polarized-π orbitals…(and) back donation.” Perhaps this seems summary seems unsurprising, but there are subtleties in the analysis.

Professor Richeson was my M.Sc. supervisor (I finished in his group six years ago). I write this in gratitude for his mentorship, and in appreciation of his group’s continuing work.

For more details read the full paper:

Coinage metal complexes supported by a “PN³P” scaffold
Gyandshwar Kumar Rao, Serge I. Gorelsky, Ilia Korobkov and Darrin Richeson
Dalton Trans., 2015,44, 19153-19162
DOI: 10.1039/C5DT03515E

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.

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Archive for December, 2015

End of year HOT articles!

Professor Philip Mountford completes his final term as Chairman for Dalton Transactions

Adjusting the Pincer Pinch

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