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

摘要

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, ML3X2·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)2M=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