ZINC(II), CADMIUM(II) AND MERCURY(II) COMPLEXES OF 2-AMINO-5-METHYL-1,3,4-THIADIAZOLE

Some zinc(II), cadmium(II) and mercury(II) complexes of 2-amino-5-methyl-1,3,4-thiadiazole (Matz or L) were prepared and studied by conductometric and i.r. methods: ZnL2X2 (X Cl, Br, I, SCN, OAc), ZnL3A2 (A NO3, ClO4), CdLX2 (X Cl, Br, SCN), CdL2X2 (X I, OAc), CdL6A2 (A NO3, ClO4), HgL2X2 (X Cl, Br), HgL1.5A2 (A NO3, ClO4). The halide, thiocyanate and acetate ions are bonded to the metal. The ligand is coordinated through the exocyclic aminic nitrogen atom; in some of the complexes it may act as bridging NH2, N(ring)-bidentate or NH2-2N(ring)-tridentate ligand. The ligand hydrochloride LHCl has been prepared and its i.r. spectrum compared with those of the ligand and its complexes. © 1979.