Metallothio anions

One area of silver chemistry that has received much recent attention is the synthesis of multinuclear aggregates.315 Anionic metal dithiolato complexes such as K M(S2C202)2 were found to form adducts with silver(I) phosphines. In these complexes, the inert cations (K+) that accompanied the metallothio anions could be readily substituted by coordinatively unsaturated silver phosphines Ag(PR3)2. For dithiooxalto complexes this led to the isolation of a remarkable range of linkage isomers (34)-(37) 316,317... 

Terminally bound sulfide is commonly found in a wide range of metallothio anions, particularly of d metal centers for example [MS4] (M = V, Nb, Ta), [MS4] (M = Mo, W), and [ReS4] . The mixed thiooxy and thioseleno anions [MS4 and [MS4- Se ]" have also been prepared. 

An enormous range of metal-sulfur cluster compounds derived from covalently linked cubane clusters and/or oligomers of metallothio anions has been prepared. Many... 

The electronic structure of nearly all types of metallothio anions has been discussed in the light of EH-SCCC MO calculations. Resonance Raman spectra of several species have been measured to get information about their electronic structure. ... 

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