INVESTIGATIONS ON ORGANOZINC COMPOUNDS .12. COORDINATION CHEMISTRY OF ORGANOZINC COMPOUNDS RZNX - ORGANOZINC COMPOUNDS OF TYPE ETZNNPHCSZ

The coordination chemistry of the organozinc-nitrogen compounds EtZnNPhCSZ (Z = H, Me, OMe, SMe and NPh2) has been studied. Whereas the benzeneinsoluble EtZnNPhCSH appears to be a coordination polymer, all the other compounds occur as dimers in benzene solution. A structure with four-coordinate zinc and three-coordinate sulphur and nitrogen atoms seems plausible for these compounds in solution. The occurrence of thiocarbonyl coordination is supported by the PMR data. The compound with Z = SMe decomposes into EtZnSMe and PhNCS above 15°. With pyridine, monomeric 1 1 complexes are formed (Z = Me, OMe, SMe). The 1 1 Py complex of EtZnNPhCSH is more likely dimeric. EtZnNPhCSNPh2 forms a 1 2 complex with Py. All the compounds readily form monomeric 1 1 complexes with N,N,Nt́,Nt́-tetramethylethylenediamine (TMED) some of which may contain five-coordinate zinc. © 1969.