Kinetics of substitution of aquo ligands fromcis-diaquo-bis-(biguanide) cobalt(III) and chromium(III) ions by aspartic acid in ethanol—water mixtures期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Kinetics of substitution of aquo ligands fromcis-diaquo-bis-(biguanide) cobalt(III) and chromium(III) ions by aspartic acid in ethanol—water mixtures

Authors:

Ashis Kumar Gangopadhyay Gauri Sankar De

Affiliation:

1. Department of Chemistry, University of Burdwan, 713104, Burdwan, India

Abstract:

The kinetics of substitution of aqua ligands fromcis-diaqua-bis(biguanide)cobalt(III) and chromium(III) ions by aspartic acid in EtOH–H₂O media have been studied spectrophotometrically in the 30 to 45°C range. We propose the following rate law for the anation

$begin{gathered} d[M(BigH)_2 (Asp)^{1 + } ]/dt hfill = frac{{k_a K_E [M(BigH)_2 (H_2 O_2^{3 + } )]_{total} [AspH^{1 - } ]}}{{1 + K_E [AspH^{1 - } ]}} hfill [M = Co^{111} and Cr^{111} ] hfill end{gathered}$

Keywords:
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