Li(+)-molecule interactions of lithium tetrafluoroborate in propylene carbonate + N,N-dimethylformamide mixtures: an FTIR spectroscopic study.
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).
Key Laboratory of Salt Lake Resources and Chemistry of Chinese Academy of Sciences, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Binbin
B
Zhang
Key Laboratory of Salt Lake Resources and Chemistry of Chinese Academy of Sciences, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China. Electronic address: zhouy@isl.ac.cn.
Yuan
Y
Zhou
Key Laboratory of Salt Lake Resources and Chemistry of Chinese Academy of Sciences, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China. Electronic address: lixiang@isl.ac.cn.
Xiang
X
Li
School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Jingying
J
Wang
Key Laboratory of Salt Lake Resources and Chemistry of Chinese Academy of Sciences, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Gang
G
Li
Key Laboratory of Salt Lake Resources and Chemistry of Chinese Academy of Sciences, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Qiang
Q
Yun
Key Laboratory of Salt Lake Resources and Chemistry of Chinese Academy of Sciences, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China.
Xiufang
X
Wang
D001881:Borates / Q000737:chemistry*; D004126:Dimethylformamide / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D011407:Propane / Q000031:analogs & derivatives* / Q000737:chemistry; D012996:Solutions; D012997:Solvents / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared
D001881:Borates; D012996:Solutions; D012997:Solvents; C440777:lithium tetrafluoroborate; D004126:Dimethylformamide; C045990:propylene carbonate; D008094:Lithium; D011407:Propane
FTIR spectroscopy; Li(+)-molecule interaction; Lithium tetrafluoroborate; N,N-dimethylformamide (DMF); Preferential solvation; Propylene carbonate (PC)