title: Local structure analysis of Cu(II)-diazepam complexes by ESR spectroscopy.
abstract: CuL(2)X(2) (L = 7-chloro-1,3-dihydro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one, also known as diazepam, X = Cl, Br) complexes have been prepared and investigated by ESR spectroscopy. Powder ESR spectra of these complexes suggest a planar-rhombic distorted local symmetry. The CH(3)Cl solutions spectra show the presence of pseudo-tetrahedral species with a 3d(xy)+4p(z) mixture ground state for the paramagnetic electron. The anisotropic spectra obtained for the Cu(II)-diazepam solution adsorbed on NaY zeolite confirm the existence of a CuN(2)X(2) chromophore.
authors.affiliation: Department of Physics, "Babeş-Bolyai" University, RO-3400, Cluj-Napoca, Romania.
authors.forename: O
authors.initials: O
authors.lastname: Cozar
authors.forename: L
authors.initials: L
authors.lastname: David
authors.forename: V
authors.initials: V
authors.lastname: Chis
authors.forename: E
authors.initials: E
authors.lastname: Forisz
authors.forename: C
authors.initials: C
authors.lastname: Cosma
authors.forename: G
authors.initials: G
authors.lastname: Damian