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Original Articles

Spectral Studies of Cobalt(II), Nickel(II), and Copper(II) Complexes of Semicarbazones

Pages 915-929 | Received 09 Jul 1985, Accepted 29 Apr 1986, Published online: 13 Dec 2006
 

Abstract

Some dimeric complexes of Co(II), Ni(II) and Cu(II) with semicarbazone derivatives of o-hydroxynaphthaldehyde and o-hydroxyacetophenone have been synthesized and characterized. Thermogravimetric and spectral studies reveal that the complexes are binuclear, chelated by two tridentate ligands having a stoichiometry of the type, (ML.2H2O)2. Each metal is six coordinate in an octahedral environment. IR and subnormal magnetic moments of the complexes suggest a dimeric structure with bridging via a phenolic oxygen. Various ligand field parameters and nephelauxetic parameters have also been calculated.

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