EPR study of the electronic properties and weak exchange interactions in bis(L-phenylalaninamidato)Cu(II).
J Inorg Biochem
; 84(3-4): 201-6, 2001 Apr.
Article
em En
| MEDLINE
| ID: mdl-11374582
ABSTRACT
We performed EPR measurements in powder and single crystal samples of bis(L-phenylalaninamidato)Cu(II) (C18H22CuN4O2). We evaluated the crystal and molecular g-factors, and estimate an exchange interaction of 0.15 K< or = J(AB)/k < or =0.32 K between coppers spaced apart 6.24 A, transmitted through an amidate bridge Cu-O-C-N-Cu. An unusual line shape is observed in powder samples arising from the relative orientation of symmetry-related molecules in the structure. The dipolar interaction and the layered structure of the copper ions produce a strong temperature variation of the spectral shape when the copper spins are polarized by the applied magnetic field.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Compostos Organometálicos
/
Fenilalanina
/
Cobre
Idioma:
En
Revista:
J Inorg Biochem
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Argentina