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001-es BibID:	BIBFORM112595
035-os BibID:	(Scopus)0001207306 (WOS)A1982NW26300018
Első szerző:	Nagypál István (kémikus)
Cím:	NMR relaxation studies in solution of transition metal complexes. V. Proton exchange reactions in aqueous solutions of VO2+-oxalic acid, -malonic acid systems / István Nagypál, István Fábián
Dátum:	1982
ISSN:	0020-1693
Megjegyzések:	The equilibria existing in the VO'+--oxalic acid and -malonic acid systems have been studied pHmetrically and the proton exchanges between the bulk water and the different paramagnetic species have been investigated by measuring the T2 relaxation time of water protons at 298 K, I = 1.0 M Na- Cl04 Mainly VOL and VOL:- type complexes are formed in both systems, the relative amounts of the protonated and mixed hydroxo complexes being very small up to pH 5. The first order rate constants of the proton exchange between the bulk water and the paramagnetic species are given. The surprisingly high value for the VOLZ- type complexes is interpreted by a continuous intramolecular rearrangement of the ligands from two equatorial positions to axial-equatorial position and vice versa The unexpectedly high rate constant for the protonated complex VOmalH is interpreted by its fast acid dissociation process.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Inorganica Chimica Acta. - 61 (1982), p. 109-113. -
További szerzők:	Fábián István (1956-) (vegyész)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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