A series of (VO)-O-IV bis chelated complexes of alpha-hydroxycarboxylic acids with a 2(COO-, O-) coordination set was analyzed by electronic absorption and EPR spectroscopy in aqueous solution. All the complexes exhibit a square-pyramidal geometry distorted toward trigonal bipyramid. The influence of the distortion of the geometry, as deduced from the steric hindrance produced by the substituents at the alpha-carbon atom of the ligands, on the spectroscopic parameters has been studied. The observed trends were related to the electronic structure of the metal ion in the distorted geometry.
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Titolo: | Electronic structure of oxovanadium(IV) complexes of alpha-hydroxycarboxylic acids |
Autori: | |
Data di pubblicazione: | 2003 |
Rivista: | |
Abstract: | A series of (VO)-O-IV bis chelated complexes of alpha-hydroxycarboxylic acids with a 2(COO-, O-) coordination set was analyzed by electronic absorption and EPR spectroscopy in aqueous solution. All the complexes exhibit a square-pyramidal geometry distorted toward trigonal bipyramid. The influence of the distortion of the geometry, as deduced from the steric hindrance produced by the substituents at the alpha-carbon atom of the ligands, on the spectroscopic parameters has been studied. The observed trends were related to the electronic structure of the metal ion in the distorted geometry. |
Handle: | http://hdl.handle.net/11388/81639 |
Appare nelle tipologie: | 1.1 Articolo in rivista |