ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

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)