Coordination States of Fe3+ and Fe2+ Dissolved in Organic Solvents
Coordination States of Fe3+ and Fe2+ Dissolved in Organic Solvents
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DOI:
10.7566/jpsj.91.094605
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发表时间:
2022-09-15
影响因子:
1.7
通讯作者:
Moritomo, Yutaka
中科院分区:
文献类型:
--
作者:
Inoue, Dai;Komatsu, Toshiki;Moritomo, Yutaka
We spectroscopically investigated the coordination states of Fe2+ and Fe3+ dissolved in several organic solvents. Ultraviolet-visible (UV-vis) spectra and extended X-ray absorption fine structure (EXAFS) analyses revealed that Fe3+ forms [FeCl4](-) complex in all the solutions. The EXAFS analysis suggests that Fe2+ forms [FeCl4](2-) in N,N-dimethylformamide (DMF) and N-methylpyrrolidone (NMP) solutions while it forms [FeL6](2+) (L is solvent molecule) in ethylene glycol (EG) and methanol (MeOH) solutions. We interpreted the solvent dependence of the Fe2+ coordination state in terms of the L-Fe2+ interaction and Cl- solubility in solvent.