Coordination compounds of tin and bismuth. Complexes of tin(IV) and bismuth(III) with N,N-dialkyldithiocarbamates

Tin and bismuth metals react with N,N,N,N'-tetraethylthiuramdisulfide, [Et2NC(S)S](2), and N,N,N',N'-tetramcthylthiuramdisulfide, [Mt(2)NC(S)S](2), in refluxing toluene to give the compounds Sn(S2CNR2)(4) (R=Et, Me) in high yield. Under similar conditions bismuth gives Bi(S2CNR2)(3). The reaction of metallic tin with a mixture of iodine and [R2NC(S)S](2) gives the compounds SnI(S2CNR2)(3) and SnI2(S2CNR2)(2). Similarly, with mixtures of [R2NC(S)S](2) and I-2, bismuth yields BiI(S2CNR2)(2) and BiI2(S2CNR2). Adducts of Bi(S2CNR2)(3) with 1,10-phenanthroline and 2.2'-bipyridyl were also prepared. The compounds and adducts were characterized by microanalyses, infrared, UV/Visible spectroscopy and conductivity measurements.