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Type: Artigo de periódico
Title: Esr Study Of Cucl2 Adsorbed On A Chemically Modified Silica Gel Surface With Benzimidazole Molecule
Author: Dias Filho N.L.
Gushikem Y.
Abstract: The ESR spectrum of CuCl2 adsorbed onto a silica gel surface chemically modified with the benzimidazole molecule showed that the surface complex has an octahedral symmetry with tetragonal distortion. The measured ESR parameters were g∥ = 2.287, g⊥ = 2.062, A∥ = 153 G and superhyperfine splitting AN = 15 G. The fit of the theoretical expressions to the experimental data was very reasonable. The effective spin orbit coupling constant for Cu2+ was reduced from its normal free ion value of λ = -828 cm-1 by as much as 30%. This reduction of λ is normal in the solid state and in frozen solution complexes. © 1995.
Rights: fechado
Identifier DOI: 10.1016/0166-1280(94)03998-Z
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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