Structure of Iron Ions in Some Acetone Based Electrolytes

X-ray absorption, Mössbauer, and Raman spectroscopy were combined to determine the local environment of iron ions in acetone based solutions of FeCl2. It is shown that part of the Fe(II) ions change their oxidation state, accompanied by symmetry change from octahedral Fe(H2O)6 2+ to tetrahedral [Fe...

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Veröffentlicht in:	The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2013-03, Vol.117 (10), p.2190-2194
Hauptverfasser:	Olszewski, Wojciech, Szymański, Krzysztof, Satuła, Dariusz, Kalska-Szostko, Beata
Format:	Artikel
Sprache:	eng
Schlagworte:	Acetone Chemistry Condensed matter: structure, mechanical and thermal properties Electrochemistry Electrolytes Exact sciences and technology General and physical chemistry Iron Mossbauer effect Mossbauer spectroscopy Physical chemistry Physics Properties of electrolytes: conductivity Structure of associated liquids: electrolytes, molten salts, etc Structure of liquids Structure of solids and liquids crystallography Symmetry X-rays
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Beschreibung
Zusammenfassung:	X-ray absorption, Mössbauer, and Raman spectroscopy were combined to determine the local environment of iron ions in acetone based solutions of FeCl2. It is shown that part of the Fe(II) ions change their oxidation state, accompanied by symmetry change from octahedral Fe(H2O)6 2+ to tetrahedral [FeCl4]− at large acetone concentrations. The ratio of Fe(II)/Fe(III) determined by Mössbauer spectroscopy agrees well with that determined by the X-ray absorption studies. Raman measurements confirm quantitative estimations of [FeCl4]− species in acetone rich solutions.
ISSN:	1089-5639 1520-5215
DOI:	10.1021/jp400556d