Dalton Transactions Blog

Check out the recent Dalton Trans. Hot Article reporting new polytopic ligands, ddta and tptd. Each contains N-donor dipyridylamino binding sites as well as separate and distinct mono-aza-15-crown-5 binding sites. Murray and colleagues use these ligands to make spin crossover compounds…..read more in their hot article now – free to access until the 16th September.

Spin crossover in polymeric and heterometallic FeII species containing polytopic dipyridylamino-substituted-triazine ligands
Tamsyn M. Ross, Boujemaa Moubaraki, Stuart R. Batten and Keith S. Murray
Dalton Trans., 2011, DOI: 10.1039/C1DT10818B

Radostina Stoyanova and co-workers have carried out detailed analysis of the zero-field splitting parameters (ZFS) of Mn⁴⁺ and Fe³⁺ ions in LiAlO₂ with a layered structure are analyzed both experimentally and theoretically by using high-frequency electron paramagnetic resonance spectroscopy, Neuman superposition model (NSM), DFT and multiconfigurational calculations and reported their work in the recent Dalton Transactions Hot Article.

But why are they doing this analysis you might ask? Well, oxide-based materials, like doped layered LiAlO₂, are important components of lithium ion batteries. In order to optimise materials like this for energy storage applications it is necssary to look at their atomic arrangement on a very small scale as Stoyanova and colleagues successfully carry out and report in this paper, which you can read for free until the 5th September.

Local structure of Mn⁴⁺ and Fe³⁺ spin probes in layered LiAlO₂ oxide by modelling of zero-field splitting parameters
Radostina Stoyanova, Anne-Laure Barra, Meglena Yoncheva, Elitza Kuzmanova and Ekaterina Zhecheva
Dalton Trans., 2011, DOI: 10.1039/C1DT10929D

Jingping Wang and colleagues make the first examples of isopolyoxotungstates-supported carbonyl metal compounds. Read more about there three novel octatungstate-supported tricarbonyl metal derivatives in their CrystEngComm Hot Article – free for you to read until the 25 August 2011.

Novel octatungstate-supported tricarbonyl metal derivatives: {[H₂W₈O₃₀][M(CO)₃]₂}⁸⁻ (M = MnI and ReI)
Jingyang Niu, Linping Yang, Junwei Zhao, Pengtao Ma and Jingping Wang
Dalton Trans., 2011, DOI: 10.1039/C1DT11042J

Since their first publication, zwitterionic benzo quinonemonoimines such as have attracted much attention, because of the remarkable electronic delocalization of their pi-system which forms two chemically connected but electronically separated 6pi-electron subunits. Their potential antiaromaticity is of theoretical interest, and the unique properties that such ligands may confer to their metal complexes extend to coordination chemistry, optical recording, homogenous catalysis and supramolecular chemistry.

In this Dalton Transactions Hot Article, Thomas Kauf and Pierre Braunstein compare the properties of TCNE and TCNQ zwitterionic benzoquinonemonoimine derivatives to find some interesting results. Be the first to read their communication here – free for you to view for 4 weeks:

Contrasting behaviour of TCNE and TCNQ zwitterionic benzoquinonemonoimine derivatives and coordination of a tricyanoethenyl substituent to Pd(0)
Thomas Kauf and Pierre Braunstein
Dalton Trans., 2011, Advance Article
DOI: 10.1039/C1DT10804B