Absorption spectra of aqueous solutions containing Fe2+ and Fe3+ ions and hydrated crystals are studied up to 50000 cm(-1). Charge-transfer transitions for both hydrated ions are here measured for the first time. The weak Fe2+ spin-forbidden transitions which up to now have received little attention in diluted systems, are put in evidence: as a consequence, we have proposed for the lower energy transitions different attributions respect to the commonly accepted ones. It is further shown that the step by step oxidation process of Fe2+ to Fe3+, starting from Fe(BF4)(2), solution, allows us to quantitatively correlate the oscillator strength of the various spin-allowed, spin-forbidden and charge-transfer transitions of both ions. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Fontana, I., Lauria, A., Spinolo, G. (2007). Optical absorption spectra of Fe2+ and Fe3+ in aqueous solutions and hydrated crystals. PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 244(12), 4669-4677 [10.1002/pssb.200743103].

Optical absorption spectra of Fe2+ and Fe3+ in aqueous solutions and hydrated crystals

LAURIA, ALESSANDRO;SPINOLO, GIORGIO MARIO
2007

Abstract

Absorption spectra of aqueous solutions containing Fe2+ and Fe3+ ions and hydrated crystals are studied up to 50000 cm(-1). Charge-transfer transitions for both hydrated ions are here measured for the first time. The weak Fe2+ spin-forbidden transitions which up to now have received little attention in diluted systems, are put in evidence: as a consequence, we have proposed for the lower energy transitions different attributions respect to the commonly accepted ones. It is further shown that the step by step oxidation process of Fe2+ to Fe3+, starting from Fe(BF4)(2), solution, allows us to quantitatively correlate the oscillator strength of the various spin-allowed, spin-forbidden and charge-transfer transitions of both ions. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Articolo in rivista - Articolo scientifico
Crystal field spectroscopy
English
2007
244
12
4669
4677
none
Fontana, I., Lauria, A., Spinolo, G. (2007). Optical absorption spectra of Fe2+ and Fe3+ in aqueous solutions and hydrated crystals. PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 244(12), 4669-4677 [10.1002/pssb.200743103].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/2329
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