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Spectrophotometric study of the formation of oxo-peroxo complexes of vanadium(V) with pyridinecarboxylic acids and ethylenediaminetetraacetic acid in acid-medium

M. Sivák

Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, CS-84215 Bratislava

 

Abstract: It has resulted from the variations of electronic spectra with pH of the acid aqueous KV03—H202—HL—HCl04 solutions (HL = isonicotinic acid (Hinic), nicotinic acid (Hnic), picolinic acid (Hpic), quinolinic acid (H2quin), dipicolinic acid (H2dipic), or ethylenediaminetetraacetic acid (H4edta)) that the formation of monoperoxo complex involves a coordination only of those carboxylato ligands to vanadium which may be coordinated through nitrogen and oxygen of the carboxyl group to give 5-membered chelates. The coordination of the anions of Hpic, H2quin, H2dipic, and H4edta improves the stability of monoperoxo complex when compared with aqua-monoperoxo complex [VO(H20)x (02)]+

Full paper in Portable Document Format: 413a311.pdf

 

Chemical Papers 41 (3) 311–319 (1987)

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