Structure of Iron Ions in Some Acetone Based Electrolytes

• Published in: The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Vol. 117; no. 10; pp. 2190 - 2194
• Main Authors: Olszewski, Wojciech, Szymański, Krzysztof, Satuła, Dariusz, Kalska-Szostko, Beata
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 14.03.2013
• Subjects: 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; Iron ion; Concentration effect; X ray spectrometry; Moessbauer spectrometry; Raman spectrometry; Acetone; Iron chloride
• ISSN: 1089-5639; 1520-5215
• DOI: 10.1021/jp400556d

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.