Spectral studies of Fe(III) complexes of dipodal tridentate chelating agents

被引:8
|
作者
Siddiqi, Zafar Ahmad [1 ]
Kumar, Sarvendra [1 ]
Khalid, M. [1 ]
Shahid, M. [1 ]
机构
[1] Aligarh Muslim Univ, Dept Chem, Aligarh 202002, Uttar Pradesh, India
关键词
Fe(III) complexes; Mossbauer spectra; Dipodal tridentate ligand; Magnetic moment; Electronic ligand field spectra; COPPER(II) COMPLEXES; N2S2; COORDINATION; TRIPODAL LIGAND; METAL-COMPLEXES; MACROCYCLE; CLUSTER; ZN; CD;
D O I
10.1016/j.saa.2008.07.016
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
The dipodal ligands (lm) and (Blm) as well as complexes [FeLCl3] [L=lm (1) and Blm (2)] have been prepared and studied using spectroscopic techniques. The magnetic moment, IR. electronic (ligand field), FAB-mass and NMR spectral data indicate a hexa-coordinate geometry around high-spin state Fe3+ where the ligands coordinate as a tridentate [N,N,N] chelating agent. Fe-57-Mossbauer spectral data confirmed the presence of a ligand asymmetry around Fe3+ in a high-spin state electronic configuration (t(2g)(3),e(g)(2), S= 5/2) with nuclear transition Fe(+/- 3/2 -> +/- 1/2) exhibiting Kramer's double degeneracy. The molecular computations provided the optimum energy perspective plots for the molecular geometries giving the important structural data. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
引用
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页码:1845 / 1850
页数:6
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