Synthesis, Properties and Characterisation of Diphenylantimony( III) O, O":.Alkylene (and Diphenyl) Dithiophosphates

Chemical Laboratories, University of Rajasthan, Jaipur-302 004

Diphenylantimony(III) chloride reacts with sodium/ammonium salts of O,O'-alkylene
and diphenyldithiophosphoric acids in equimolar amounts in refluxing benzene to yield

Ph₂SbS₂POGO (where,G=-CMe^₂CM₂-, -CH₂CMe₂CH₂-, -CH₂CEt₂CH₂ -. aod - CMe.CH ,CHMe-) and Ph₂SbS₂P(OPh)₂. The complexes are viscous liquids or semi-solids, soluble in common organic solvents and monomeric in nature. These have been characterised on the basis of elemental analyses, molecular weight determinations, ir and nmr (¹H. ^{1 2}C and ^{2 1}P) spectral data which reveal bidentate behaviour of
dithiophosphate moieties.