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Updated: Aug 15, 2026

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Published on: October 10, 2016
Vibrational spectroscopic studies on ion solvation of lithium perchlorate in propylene carbonate +
1School of Chemical and Environmental Sciences, Henan Normal University, Xinxiang, Henan, People's Republic of China.
Abstract:
The infrared (IR) and Raman spectra are reported for solutions of lithium perchlorate in propylene carbonate (PC), N,N-dimethylformamide (DMF) and PC + DMF mixtures. The band splittings of symmetric ring deformation for PC and O=CN deformation for DMF suggest that there is a strong interaction between lithium cations and solvent molecules. The solvent molecules have been assigned to two types, the free and complexed molecules. By a comparison of the intensity for the corresponding bands, it has been concluded that Li+ cations are preferentially solvated by DMF molecules in the LiClO4/PC-DMF solutions. This has been explained by the difference in values of donor number.
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