[期刊论文]

出版年：1973

Abstract

Mixed ligand complexes of Co(ii), viz, [Co(tu)o-Phen₂Cl] Cl, [Co(tu)dipy₂Cl] Cl, [Co(tu)-(PhOAs)₂Cl] and [Co(tu)₂py₂Cl₂] were prepared by the interaction of the tetrahedral complex, [Co(tu)₂Cl₂], with hetrocyclic amines and phenyl arsonic acid, respectively. The complex species were characterized as 6-coordinate products by their magnetic susceptibilities and electronic absorption spectra. In the heterocyclic amine substituted products, the bonding through sulphur and tertiary nitrogen has been inferred on the basis of i.r. studies, which show the presence of M=S and M=O bonds in the complexes. Kinetic studies on the substitution reactions involving the formation of the above mentioned species were carried out potentiometrically using AgAg₂S as an indicator electrode. They indicate a second order overall process, first order with respect to both of the reactants.

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