Dalton Transactions Blog

Richard Catlow and co-workers, based at the University College London, have used DFT to reveal new insights into the catalytic properties of cheap Fe complexes and have compared them to their more expensive and toxic Ru counterparts. The group look spectifically at these catalysts in ketone/alcohol hydrogen transfer reaction and show that the Fe compounds could be viable in these pharmaceutically important reactions. Read this group’s recent Dalton Transactions Hot Article for more info.

trans-FeII(H)2(diphosphine)(diamine) complexes as alternative catalysts for the asymmetric hydrogenation of ketones? A DFT study 
Hsin-Yi Tiffany Chen, Devis Di Tommaso, Graeme Hogarth and C. Richard A. Catlow
Dalton Trans., 2011, Advance Article    DOI: 10.1039/C0DT00820F 

Alexander B. Sorokin and colleagues at the University of Lyon, France, continue their work on metallophthalocyanines by looking at N-bridged diiron complexes with an Fe–N–Fe core unit.

Having previously discovered these types of compound are capable of the catalytic oxidation of organic substrates (read their earlier paper here), in this Dalton Transactions Hot article Sorokin explains the high reactivity of this species, and how the system can efficiently oxidizing methane at extremely mild conditions.

High-valent diiron species generated from N-bridged diiron phthalocyanine and H2O2
Pavel Afanasiev, Evgeny V. Kudrik, Jean-Marc M. Millet, Denis Bouchu and Alexander B. Sorokin
Dalton Trans., 2011, Advance Article
DOI: 10.1039/C0DT00958J , Paper

READ FOR FREE until 15th December

Dominic Freudenmann and Claus Feldmann from the Karlsruhe Institute of Technology, Germany,  have used an ionic liquid to obtain transparent red crystals of [Bi₃GaS₅]₂[Ga₃Cl₁₀]₂[GaCl₄]₂·S₈.

In this Dalton Transactions Hot article they explain that the cation unit of the crystal [Bi₃GaS₅]²⁺ appears as a (Bi–S–Ga)-heterocubane, and unusually, the anion [Ga₃Cl₁₀]^– is in a star shaped form, with three (GaCl4) tetrahedra sharing a single central chlorine atom. This type of structure is particularly exciting as it has only previously been observed in fluoride complexes.

[Bi₃GaS₅]₂[Ga₃Cl₁₀]₂[GaCl₄]₂·S₈ containing heterocubane-type [Bi₃GaS₅]²⁺, star-shaped [Ga₃Cl₁₀]−, monomeric [GaCl₄]− and crown-like S₈

Dominic Freudenmann and Claus Feldmann
Dalton Trans., 2010, Advance Article
DOI: 10.1039/C0DT00985G , Paper

Sabine Schlecht and colleagues have used mixed polymer/precursor films to produce films of nanoparticles of PbSe or PbTe thermoelectric materials.  Find out more in their Dalton Transactions Hot Article.

READ FOR FREE! Until November 25th.

Polymer-assisted preparation of nanoscale films of thermoelectric PbSe and PbTe and of lead chalcogenide-polymer composite films 
Christoph Erk, Andreas Berger, Joachim H. Wendorff and Sabine Schlecht

Dalton Trans., 2010, DOI: 10.1039/C0DT00745E

In this Dalton Transactions article, Paul Kogerler and Xiao-Ming Chen discuss the first cobalt single molecule magnet with a linear core struture and featuring a zig-zag backbone.

 
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A tetranuclear cobalt(II) chain with slow magnetization relaxation 

Yan-Zhen Zheng, Manfred Speldrich, Helmut Schilder, Xiao-Ming Chen and Paul Kögerler
Dalton Trans., 2010, DOI: 10.1039/C0DT00935K

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Solid-state transformation of [Co(NCS)2(pyridine)4] into [Co(NCS)2(pyridine)2]n: from Curie–Weiss paramagnetism to single chain magnetic behaviour
 
Jan Boeckmann and Christian Näther
Dalton Trans., 2010, DOI: 10.1039/C0DT00904K

Bayrammurad Saparov and Svilen Bobev, from the University of Delaware, USA, have synthesised a whole new familyof quaternary fluoro-antimonides A₅Cd₂Sb₅F (A = Sr, Ba, Eu) and oxyantimonides
Ba₅Cd₂Sb₅O_x (0.5<x<0.7).

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Synthesis, crystal and electronic structures of the new quaternary phases A₅Cd₂Sb₅F (A = Sr, Ba, Eu), and Ba₅Cd₂Sb₅O_x (0.5<x<0.7) 

Bayrammurad Saparov and Svilen Bobev
Dalton Trans., 2010, DOI: 10.1039/C0DT00595A