Spectroscopic and electrochemical characterization of some Schiff base metal complexes containing benzoin moiety

被引：33
作者：
El-Shahawi, M. S. [1 ,2 ]
Al-Jahdali, M. S. [1 ]
Bashammakh, A. S. [1 ]
Al-Sibaai, A. A. [1 ]
Nassef, H. M. [1 ]
机构：
[1] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah 21589, Saudi Arabia
[2] Damiatta Univ, Fac Sci, Dept Chem, Dumyat, Egypt
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2013年 / 113卷
关键词：
Schiff bases; Chelates; Bond length; Racha parameters; Electrode mechanism; Thin layer voltammetry; COPPER(II); BEHAVIOR; OXIDATION; LIGANDS;
D O I：
10.1016/j.saa.2013.04.090
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The ligation behavior of bis-benzoin ethylenediamine (B2ED) and benzoin thiosemicarbazone (BTS) Schiff bases towards Ru3+, Rh3+, Pd2+, Ni2+ and Cu2+ were determined. The bond length of M-N and spectrochemical parameters (10Dq, beta, B and LFSE) of the complexes were evaluated. The redox characteristics of selected complexes were explored by cyclic voltammetry (CV) at Pt working electrode in non aqueous solvents. Au mesh (100 w/in.) optically transparent thin layer electrode (OTTLE) was also used for recording thin layer CV for selected Ru complex. Oxidation of some complexes occurs in a consecutive chemical reaction of an EC type mechanism. The characteristics of electron transfer process of the couples M2+/M3+ and M3+/M4+ (M = Ru3+, Rh3+) and the stability of the complexes towards oxidation and/or reduction were assigned. The nature of the electroactive species and reduction mechanism of selected electrode couples were assigned. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.
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页码：459 / 465
页数：7
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