Li+-molecule interactions of lithium tetrafluoroborate in propylene carbonate plus N,N-dimethylformamide mixtures: An FTIR spectroscopic study

被引：16
|
作者：
Zhang, Binbin [1 ,2 ]
Zhou, Yuan [1 ]
Li, Xiang [1 ]
Wang, Jingying [3 ]
Li, Gang [1 ,2 ]
Yun, Qiang [1 ,2 ]
Wang, Xiufang [1 ]
机构：
[1] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources Chem Qinghai Prov, Key Lab Salt Lake Resources & Chem Chinese Acad S, Xining 810008, Qinghai, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2014年 / 124卷
关键词：
Li+-molecule interaction; Lithium tetrafluoroborate; Propylene carbonate (PC); N; N-dimethylformamide; (DMF); FTIR spectroscopy; Preferential solvation; NONAQUEOUS ELECTROLYTE-SOLUTIONS; CATION-SOLVENT INTERACTION; ION SOLVATION; PREFERENTIAL SOLVATION; TRANSPORT-PROPERTIES; RAMAN INTENSITY; LOCAL-STRUCTURE; ASSOCIATION; CONDUCTIVITY; PERCHLORATE;
D O I：
10.1016/j.saa.2014.01.001
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
FTIR (Fourier transformed infrared) spectra have been collected and analyzed for solutions of lithium tetrafluoroborate in propylene carbonate (PC), N,N-dimethylformamide (DMF), and PC + DMF mixtures. The band splitting and symmetric ring deformation for PC and O=C-N 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 LiBF4/PC + DMF solutions. This has been explained by the difference in values of donor number (DN). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：40 / 45
页数：6
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