Complex formation between copper(II) and (R,S)-alpha-hydroxymethylornithine or (R,S)-N-delta-benzoyl-alpha-hydroxymethylornithine was studied in aqueous solution by potentiometric and spectroscopic (electron paramagnetic resonance and electronic absorption) techniques. The results show that the alpha-hydroxymethyl derivatives of ornithine are coordinated through the alcoholic group to the copper(II) ion in basic solution. Deprotonation and coordination of the alpha-hydroxymethyl group occurs and yields species with the amino and/or carboxylato groups also bound to the metal ion. (C) 1998 Elsevier Science S.A.

Copper(II) complexes of (R,S)-alpha-hydroxymethylornithine and its N-delta-benzoyl derivative / Chruscinska, E; Kaczmarek, K; Olejnik, J; Leplawy, Mt; Panzanelli, Angelo; Micera, Giovanni. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - 269:2(1998), pp. 279-282. [10.1016/S0020-1693(97)05754-X]

Copper(II) complexes of (R,S)-alpha-hydroxymethylornithine and its N-delta-benzoyl derivative

PANZANELLI, Angelo;MICERA, Giovanni
1998

Abstract

Complex formation between copper(II) and (R,S)-alpha-hydroxymethylornithine or (R,S)-N-delta-benzoyl-alpha-hydroxymethylornithine was studied in aqueous solution by potentiometric and spectroscopic (electron paramagnetic resonance and electronic absorption) techniques. The results show that the alpha-hydroxymethyl derivatives of ornithine are coordinated through the alcoholic group to the copper(II) ion in basic solution. Deprotonation and coordination of the alpha-hydroxymethyl group occurs and yields species with the amino and/or carboxylato groups also bound to the metal ion. (C) 1998 Elsevier Science S.A.
Copper(II) complexes of (R,S)-alpha-hydroxymethylornithine and its N-delta-benzoyl derivative / Chruscinska, E; Kaczmarek, K; Olejnik, J; Leplawy, Mt; Panzanelli, Angelo; Micera, Giovanni. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - 269:2(1998), pp. 279-282. [10.1016/S0020-1693(97)05754-X]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/81641
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