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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.)

Exchange interactions in the copper(II)-N-benzoylglycine (hippuric acid) complex

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Author(s):
Vieira, Ernanni D. [1] ; Facchin, Gianella [2] ; Torre, Maria H. [2] ; Costa-Filho, Antonio J. [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Dept Fis & Informat, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Republica, Catedra Quim Inorgan, Montevideo - Uruguay
Total Affiliations: 2
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 19, n. 8, p. 1614-1621, 2008.
Web of Science Citations: 6
Abstract

The complex CuII-N-benzoylglycine provides a convenient system to study weak exchange interactions between unpaired spins transmitted through a biologically relevant long chemical bridge. The molecule exists as a dimer with each CuII ion coordinated to five ligands, forming a distorted square-based pyramid. The only chemical connection between magnetically non-equivalent copper ions is a very long path comprising 17 diamagnetic atoms and a weak putative hydrogen bond. This interaction was studied using Electron Paramagnetic Resonance in single-crystal samples at 9.5 and 34.5 GHz and its magnitude was calculated as 4(1) mK. This value is discussed in terms of values obtained for similar paths in other model compounds and in proteins. (AU)

FAPESP's process: 03/09859-2 - Electron paramagnetic resonance in structural studies of proteins, peptides, biomembranes, polymers, model molecules and their complexes with transition metals
Grantee:Otaciro Rangel Nascimento
Support Opportunities: PRONEX Research - Thematic Grants