Synthesis and chemistry of some binuclear oxomolybdenum(V) xanthate (O-alkyl dithiocarbonate) complexes
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 10,p. 1044-1049
- https://doi.org/10.1039/dt9740001044
Abstract
A simple method for the preparation of pure µ-oxo-bis[bis(O-alkyl dithiocarbonato)oxomolybdenum(V)] complexes, [Mo2O3(RO·CS·S)4](I; R = Me, Et, Pri, Bun, or Bui), and difficulties encountered with previous preparative methods are reported. Assignments of molybdenum–oxygen stretching frequencies in the i.r. spectra have been made and visible spectra have been reinvestigated. Reaction with dialkylamines, alcohols, or hydrogen sulphide results in loss of xanthate ligand and produces, in the last two cases, a series of new di-µ-sulphido-bis[(O-alkyl dithiocarbonato)oxomolybdenum(V)] complexes, [Mo2O2S2(RO·CS·S)2](II). Spectroscopic studies of these products indicate that those containing unbranched O-alkyl dithiocarbonate groups are polymers in the solid state, which dissociate in solution. Complexes (I) and (II) react with excess of xanthate ligand to produce the ion [Mo2O2S2(O·CS·S)2]2–, (III).Keywords
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