EQUILIBRIA AND LIGAND-SUBSTITUTION KINETICS OF THE 5-CO-ORDINATE COBALT(II) COMPLEX OF 1,4,8,11-TETRAMETHYL-1,4,8,11-TETRAAZACYCLOTETRADECANE WITH UNIDENTATE LIGANDS

被引：11

作者：

BURKI, S

KADEN, TA

机构：

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1991年

关键词：

D O I：

10.1039/dt9910000805

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Cobalt(II) reacts with 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane (tmc) to give the five-co-ordinate complex, [Co(tmc)(H2O)]2+, in which the water molecule can be replaced by unidentate ligands L such as OH-, OCN-, SCN- and N3-. The stability constants of the complexes [Co(tmc)L\]+, determined by spectrophotometric titrations, decrease in the order OH- > OCN- > SCN- > N3-. The kinetics of formation and dissociation of [Co(tmc)L]+ were measured by the stopped-flow technique. A reaction scheme is proposed to explain the kinetic data.

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页码：805 / 809

页数：5

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