New octahedral ZnII and CdII complexes based on azo derivatives and azomethines of pyrazole-5-thione

New metal chelates of Zn-II and Cd-II (ML2) based on (4Z)-3-methyl-1-phenyl-5-thioxo-1,5-dihydro-4H-pyrazol-4-one quinolin-8-ylhydrazone (HL1) and (4Z)-5-methyl-2-phenyl-4-[(quinolin-8-ylimino)methyl]-2,4-diliydro-3H-pyrazole-3-thione (HL2) were synthesized. The structures of the metal chelates were studied by EXAFS and NMR (H-1, C-13, and Cd-111) spectroscopy. The structure of the Cd(L-1)(2) complex was established by X-ray diffraction analysis. The complexes have pseudooctahedral structures with the N4S2 ligand environment.