Use of proton NMR to study low symmetry bonding effects in transition metal complexes期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Use of proton NMR to study low symmetry bonding effects in transition metal complexes

Affiliation:	1. Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-901, São Paulo, Brazil;2. Departamento de Química, Universidade Federal de São Carlos, Cx. Postal 676, São Carlos, 13565-905, São Paulo, Brazil

Abstract:	The 300 MHZ proton NMR chemical shifts of the mixed complex (salicylaldehyde)(acetyl-acetone)ethylenediimino nickel(II) and the two corresponding non-mixed complexes were studied. The differences in chemical shifts were very small, ∼ 0.05 ppm, but by looking at both the mixed and non-mixed species in the same solution relative values could be determined. The differences in chemical shifts were attributed to both a geometry effect and a basicity effect.

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