Structure and bonding in metal sulfoxide complexes

Sulfoxides are capable of forming stable complexes with transition metals and there have been many comprehensive studies into their binding properties. However, the use of sulfoxides, particularly chiral sulfoxides, as ligands in transition metal catalysis is rather less well developed. This review aims to describe these catalytic studies and covers new developments that are showing very promising results and that have led to a renewed interest in this field.

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The emergence of sulfoxides as efficient ligands in transition metal catalysis.

Electronic structure, spectra and magnetic properties of oxycations—IV ligation effects on the infra-red spectrum of the vanadyl ion

http://www.jbc.org/content/278/30/27630.full.pdf

Certain Metals Trigger Fibrillation of Methionine-oxidized α-Synuclein

Methods of calculation for the parameters Dq and B from the ligand-field spectra of octahedral cobalt(II) compounds are discussed. A method of calculation is introduced, which considers the lowering of the 4T1g (F) state by spin-orbit splitting. This calculation is applied to the spectra of 43 octahedrally coordinated cobalt(II) compounds.



With the aid of the spectral data an energy-level diagram is constructed, into which the absorption bands are fitted.



Comparison of calculated Dq and B values with corresponding values for isomorphous nickel(II) compounds shows that - in general - the crystalfield parameter Dq is highest for cobalt, although the differences with nickel are less than 4 % in most cases. The calculated B values corresponds with those of Ni, with differences less than 1 % for many ligands.

F. A. Cotton

Papers

Sulfoxides as Ligands. I. A Preliminary Survey of Methyl Sulfoxide Complexes