ELECTROCHEMICAL SYNTHESIS OF ZINC(II) COMPLEXES OF 4,6-DIMETHYLPYRIMIDINE-2-THIONE - THE CRYSTAL-STRUCTURE OF PYRIDINE-BIS(4,6-DIMETHYLPYRIMIDINE-2-THIOLATO)ZINC(II)

Electrochemical oxidation of zinc in a solution of 4,6-dimethylpyrimidine-2-thione (4,6-Me(2)pymtH) in acetonitrile afforded the compound [Zn(4,6-Me(2)pymt)(2)]. When pyridine (py), 1,10-phenanthroline (phen) or 2,2-bipyridine (bipy) were added to the electrolytic phase [Zn(4,6-Me(2)pymt)(2)py], [Zn(4,6-Me(2)pymt)(2)phen] or [Zn(4,6-Me(2)pymt)(2)bipy] were obtained. The crystal structure of pyridine-bis(4,6-dimethylpyrimidine-2-thio-lato)zinc(II) was determined; the zinc atom has distorted trigonal bipyramidal geometry. The IR and H-1 and C-13 NMR spectra of the complexes are discussed and related to their structures.