碳酸亚丙酯+N，N-二甲基甲酰胺混合物中四氟硼酸锂的Li(+) - 分子相互作用：傅里叶变换红外光谱研究
Li(+)-molecule interactions of lithium tetrafluoroborate in propylene carbonate + N,N-dimethylformamide mixtures: an FTIR spectroscopic study.
作者信息
Zhang Binbin, Zhou Yuan, Li Xiang, Wang Jingying, Li Gang, Yun Qiang, Wang Xiufang
机构信息
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.
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.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Apr 24;124:40-5. doi: 10.1016/j.saa.2014.01.001. Epub 2014 Jan 10.
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).
已收集并分析了四氟硼酸锂在碳酸丙烯酯（PC）、N，N-二甲基甲酰胺（DMF）以及PC+DMF混合物中的傅里叶变换红外（FTIR）光谱。PC的谱带分裂和对称环变形以及DMF的C=O-N变形表明锂阳离子与溶剂分子之间存在强烈相互作用。溶剂分子被分为两类，即自由分子和络合分子。通过比较相应谱带的强度，得出在LiBF4/PC+DMF溶液中Li(+)阳离子优先被DMF分子溶剂化的结论。这可以用给体数（DN）值的差异来解释。
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