Diorganosilicon(IV) complexes of heterocyclic dithiocarbamates. Synthesis and structural elucidations

Diorganosilicon(IV) complexes of heterocyclic dithiocarbamates having gener al formula [CH2CH2(X)CH2CH2NCS2](2)SiR2 (where R = CH3, X = CH2, CH-CH3 and R = C6H5, X = CH2, CH-CH3, O) have been synthesized by the interaction of diorganodichlorosilicon with the sodium salt of heterocyclic dithiocarbamates in a 1 : 2 stoichiometric ratio. The resulting complexes were characterized by elemental analysis, molecular wei ght measurements and a tetracoordinated geometry around silicon atom has be en proposed on the basis of IR and. NMR (H-1, C-13 and Si-29) spectral stud ies.