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Coordination compounds of Co(II), Ni(II) and Cu(II) with capric acid hydrazide

Research paper by Stepan J. Chundak, Vukadin M. Leovac, Luka J. Bjelica

Indexed on: 01 Aug '87Published on: 01 Aug '87Published in: Monatshefte für Chemie - Chemical Monthly



Abstract

The reaction of aquo-ethanolic solutions of Co(II), Ni(II) and Cu(II) salts and ethanolic solution of capric acid hydrazide (L) yielded paramagnetic, high-spin bis- and tris(ligand) chelate complexes. The tris(ligand) complexes, [ML3]X2·nH2O [M=Co(II), Ni(II);X=NO3−, ClO4−, 1/2SO42−], have an octahedral structure formed on account of the bidentate (NO) coordination of three neutral hydrazide molecules. In the bis(ligand) complexes,ML2(NCS)2 [M=Co(II), Ni(II)] and CuL2X2·nH2O (X=NO3−, ClO4− and 1/2SO42−), the oxoanions and NCS− take also part in coordination. The complexes have been characterized by elemental analysis, IR spectra, magnetic measurements, molar conductivity and TG analysis.