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001-es BibID:	BIBFORM112593
035-os BibID:	(WOS)A1982PV59700010
Első szerző:	Nagypál István (kémikus)
Cím:	NMR relaxation studies in solution of transition metal complexes: VII. protonation of the vanadyl ion in aqueous solution / Nagypál István ; Fábián István ; Connick, Robert E.
Dátum:	1982
ISSN:	0001-5407
Megjegyzések:	The protonation of the vanadyl ion in aqueous solution has heen detected and the equilibrium constant for the reaction has heen determined spectrophotometrically at 298 K, in 6 JY.í(Na ,I-I)CI0,1? The transverse relaxation of water protons in acidic solutions of vanadyl ion ha s bcen studied at 2.5 and 100 MHz frequencies. A model is given to interpret the relaxation measurements, which takes i nto account the presence of two paramagnetic sites and the coupling hetween them through the proton exchange reactions. The contradictory statements concerning to the relaxa ? tion behaviour of the system havc been reinterpreted and reconciled by the use of the present model. An electric circuit description of the coupled chemical exchange and paramagnetic relaxation processes is introduced and proved to be equivalent with that of the descrip? tions based on the BLOCH equations and on formal kinetic considerations. The inter? relation of the proton exchange rate constants and the paramagnetic relaxation times are calculated and illustrated on a nomogram.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény hazai lapban folyóiratcikk
Megjelenés:	Acta Chimica Academiae Scientiarum Hungaricae. - 110 : 4 (1982), p. 447-460. -
További szerzők:	Fábián István (1956-) (vegyész) Connick, Robert E.
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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