Synthesis and characterisation of organoarsenic(III) xanthates and dithiocarbamates. X-ray crystal structures of RAs(S2CNEt2)2, R = Me and Ph

Article abstract of DOI:10.1016/S0022-328X(96)06905-7

Organoarsenic(III) xanthates and dithiocarbamates of the types [RAs(S∩S)₂] and [Me₂As(S∩S)] [R = Me, Et, Ph; (S∩S)=S₂COEt, S₂CNR′₂ (R′ = Me, Et)] have been prepared and characterised by arsenic analysis, mass, IR and NMR (¹H and ¹³C) spectral data. Crystal structure determinations for two of the compounds, RAs(S₂CNEt₂)₂ [R = Me or Ph], have also been determined and show that the arsenic atoms exist in pyramidal geometries and that the Lewis acidities of the RAs [R = Me or Ph] centres are comparable.