Synthesis and spectroscopic characterization of new metal(II) complexes with methionine sulfoxide

Massabni, Antonio Carlos; Corbi, Pedro P.; Melnikov, Petr; Zacharias, Marisa A.; Rechenberg, Hercílio R.

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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Synthesis and spectroscopic characterization of new metal(II) complexes with methionine sulfoxide

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Author(s):	Massabni, Antonio Carlos ^[1] ; Corbi, Pedro P. ; Melnikov, Petr ; Zacharias, Marisa A. ; Rechenberg, Hercílio R. Total Authors: 5
Affiliation:	^[1] Universidade Estadual Paulista (UNESP). Campus de Araraquara. Instituto de Química - Brasil Total Affiliations: 5
Document type:	Journal article
Source:	Journal of Coordination Chemistry; v. 57, n. 14, p. 1225-1231, Sept. 2004.
Field of knowledge:	Physical Sciences and Mathematics - Chemistry
Abstract
Methionine sulfoxide complexes of iron(II) and copper(II) were synthesized and characterized by chemical and spectroscopic techniques. Elemental and atomic absorption analyses fit the compositions K-2[Fe(metSO)(2)]SO4 (.) H2O and [Cu(metSO)(2)](.) H2O. Electronic absorption spectra of the complexes are typical of octahedral eeometries. Infrared spectroscopy suggests coordination of the ligand to the metal through the carboxylate and sulfoxide groups. An EPR spectrum of the Cu(II) complex indicates tetragonal distortion of its octahedral symmetry. Fe-57 Mossbauer parameters are also consistent with octahedral stereochemistry for the iron(II) complex. The complexes are very soluble in water. (AU)

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