Spectroscopic studies of some copper(II) complexes with amino acids

被引：84

作者：

Stanila, A.

Marcu, A.

Rusu, D.

Rusu, M. ^{[1
]}

David, L.

机构：

[1] Univ Babes Bolyai, Fac Chem, Cluj Napoca 400028, Romania

[2] Agr Sci & Vet Med Univ, Cluj Napoca 400018, Romania

[3] Univ Babes Bolyai, Fac Phys, Cluj Napoca 400028, Romania

[4] Iuliu Hatieganu Univ, Fac Pharm, Cluj Napoca 400023, Romania

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2007年 / 834卷

关键词：

amino acids; Cu(II) complexes; FT-IR spectroscopy; UV-Vis spectroscopy; EPR spectroscopy;

D O I：

10.1016/j.molstruc.2006.11.048

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Copper-amino acids complexes in aqueous solution: [Cu-(L-1)(2)]center dot H2O(1), (L-1 = methionine), [Cu-(L-2)(2)]center dot H2O (2), (L-2 = phenylalanine) and [Cu(L-3)(2)](3), (L-3 = triptophan) were synthesized and characterized by means of elemental, thermal and IR, UV-Vis and EPR spectroscopic investigations. The IR spectra show that amino acids act as bidentate ligands with coordination involving the carboxylic oxygen and the nitrogen atom of the amino group. The nu(C=O) and delta(N-H) vibrations are shifted toward higher (for 1 and 2) and lower-wave numbers for 3. Visible electronic and Powder EPR spectra at room temperature are typical for monomeric species with square-planar local symmetry around the metal ion. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：364 / 368

页数：5

共 15 条

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