Vibrational Spectroscopic Study on Ion Solvation and Association of Lithium Perchlorate in 4‐Methoxymethyl‐ethylene Carbonate | Zendy

Qiao HongWei | Zendy; Luan HeLin | Zendy; Zhou ZhiMing | Zendy; Yao Wen | Zendy

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Vibrational Spectroscopic Study on Ion Solvation and Association of Lithium Perchlorate in 4‐Methoxymethyl‐ethylene Carbonate

Author(s) -

Qiao HongWei,

Luan HeLin,

Zhou ZhiMing,

Yao Wen

Publication year - 2007

Publication title -

chinese journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.28

H-Index - 41

eISSN - 1614-7065

pISSN - 1001-604X

DOI - 10.1002/cjoc.200790087

Subject(s) - chemistry , solvation , lithium perchlorate , ethylene carbonate , perchlorate , ion association , solvation shell , ion , lithium (medication) , inorganic chemistry , raman spectroscopy , molecule , photochemistry , electrolyte , organic chemistry , medicine , physics , electrode , optics , endocrinology

Solvation interaction and ion association in solutions of lithium perchlorate/4‐methoxymethyl‐ethylene carbonate (MEC) have been studied by using Infrared and Raman spectra as a function of concentration of lithium perchlorate. The splitting of ring deformation band and ring ether asymmetric stretching band, and the change of carbonyl stretching band suggest that there should be a strong interaction between Li + and the solvent molecules, and the site of solvation should be the oxygen atom of carbonyl group. The apparent solvation number of Li + was calculated by using band fitting technique. The solvation number was decreased from 3.3 to 1.1 with increasing the concentration of LiClO 4 /MEC solutions. On the other hand, the band fitting for the ClO − 4 band revealed the presence of contact ion pair, and free ClO − 4 anion in the concentrated solutions.

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