Bromo(N,N-dimethyldithiocarbamato)dimethylgermanium and (N,N-dimethyldithiocarbamato)iododimethylgermanium

Synthesis and characterization of dimethyl- and dimethoxyphenylbis(N,N-dialkyldithiocarbamato)tellurium(IV) and chlorodimethyl- and chlorodimethoxyphenyl-(N,N-dialkyldithiocarbamato)tellurium(IV). Crystal structures of Me2Te[S2CNMe2]2 and (p-MeOC6H4)2Te[S2CNMe2]2

“…This appears to be particularly true for transition inetal compounds (8,9) and the relatively few examples of monodentate ligands appear to occur with mixed ligands as is the case for Pt[S2CN(i-Bu),l2[PMe*hlz ( 10). Within main group elements, bidentate ligands are still common as with BuSn[SzCNEtz] (1 1) and Zn[S2CNR,I2 species (12, 13) but we found only anisobidentate linkages with germanium compounds (14)(15)(16)(17). This was also the case in previous reports of diphenyl(N,N-dialkyldithiocarbamato)tellurium(IV) compounds ( 18,19).…”

Preparation and characterization of a series of bromodiphenyl(N,N-dialkyldithiocarbamato)tellurium(IV) compounds where R=Me, Et, i-Pr, Bu, and of chlorodiphenyl(N,N-dibutyldithiocarbamato)tellurium(IV) and diphenylbis(N,N-dibutyldithiocarbamato)tellurium(IV). Crystal structure of Ph2TeBr[S2CNEt2] and Ph2Te[S2CNBu2]2

“…Monodentate (or anisobidentate) bonding is consistently found in several, previously reported, dithiocarbamates of germanium (12)(13)(14)(15). In some cases it has been noted that changes in the mode of attachment occur with the variation of the alkyl group of the dithiocarbamate ligand.…”

Preparation and characterization of diphenylbis(N,N-dialkyldithiocarbamato)tellurium (IV) and chlorodiphenyl(N,N-dialkyldithiocarbamato)tellurium(IV). Crystal structures of Ph2Te[S2CNMe2]2, Ph2TeCl[S2CNEt2], and Ph2TeCl[S2CN(i-Pr)2]

“…Examples of monodentate dithiocarbamates are relatively fewer in transition metal chemistry, where they usually occur in mixed ligand complexes such as Pt [S2CN(i-B~)2]2 [P(Me2)PhI2 (1 1). We have reported on several dithiocarbamates of germanium in which monodentate (or anisobidentate) bonding is consistently found (12)(13)(14)(15). In some instances changes in mode of attachment have been noted with variation of the alkyl group of the dithiocarbamate, as illustrated by Zn[S2CNMe2I2 in which the dithiocarbamate groups are both bidentate and bridging (16), and Zn[S2CNEt212 where both of the dithiocarbarnate groups are bidentate and the molecule is monomeric (17).…”