Donor property of cobalt(II) Schiff base complexes toward triphenyltin(IV)-chloride: A kinetic study
✍ Scribed by Zahra Asadi; Mozaffar Asadi; Fatemeh Mosalanezhad
- Publisher
- John Wiley and Sons
- Year
- 2012
- Tongue
- English
- Weight
- 916 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
Abstract
In this study, some cobalt(II)tetraaza Schiff base complexes were used as donors in coordinating to triphenyltin(IV)chloride as acceptors; the kinetics and mechanism of the adduct formation were studied spectrophotometrically. Co(II)tetraaza Schiff base complexes used were [Co(amaen)][N,N′‐ethylene‐bis‐(o‐amino‐α‐methylbenzylideneiminato)cobalt(II)] (1), [Co(appn)] [N,N′‐1,2‐propylene‐bis‐(o‐amino‐α‐phenylbenzylideneiminato)cobalt(II)] (2), [Co(ampen)] [N,N′‐ethylene‐bis‐(o‐amino‐α‐phenylbenzylideneiminato)cobalt‐(II)] (3), [Co(cappn)][N,N′‐1,2‐proylene‐bis‐(5‐chloro‐o‐amino‐α‐phenylbenzylideneiminato)cobalt(II)] (4), and [Co(campen)] [N,N′‐ethylene‐bis‐(5‐chloro‐o‐amino‐α‐phenylbenzylid‐eneiminato)cobalt(II)] (5). The reactivity trend of the complexes in interaction with triphenyltin(IV)chloride was Co(amaen) > Co(appn) > Co(ampen) > Co(cappn) > Co(campen). The linear plots of k~obs~ versus the molar concentration of the triphenyltin(IV)chloride, a high span of the second‐order rate constant k~2~ values, and large negative values of Δ__S__^≠^ and low Δ__H__^≠^ values suggest an associative (A) mechanism for the acceptor–donor adduct formation. © 2012 Wiley Periodicals, Inc. Int J Chem Kinet 44: 635–640, 2012