Vibrational Spectroscopic Study on Ion Solvation and Ion Association of Lithium Tetrafluoroborate in 4-Ethoxymethyl-ethylene Carbonate

Autor:	Xiangpeng Fang, Zhiming Zhou, Xin Wang, Ji-Mei Li, Wen Yao, Helin Luan, Hongwei Qiao
Rok vydání:	2008
Předmět:	Chemistry Inorganic chemistry Solvation Lithium tetrafluoroborate Infrared spectroscopy General Chemistry Ion-association Ion chemistry.chemical_compound symbols.namesake symbols Physical chemistry Molecule Raman spectroscopy Ethylene carbonate
Zdroj:	Chinese Journal of Chemistry. 26:689-692
ISSN:	1614-7065 1001-604X
Popis:	Solvation and association interactions in solutions of lithium tetrafluoroborate/4-ethoxymethyl-ethylene carbonate (EEC) have been studied as a function of concentration of lithium tetrafluoroborate by infrared and Raman spectroscopy. Strong interactions between Li(+) and solvent molecules or BF(4)(-) anions were observed. Splitting of the ring symmetric angle deformation band, the carbonyl stretching band and the skeletal ring vibrational band suggests that the interaction between Li(+) ions and EEC molecules take place via the oxygen atom on the carbonyl group. The apparent solvation numbers of Li(+), varying from 4.32 to 1.26 with increasing the solution concentrations, were deduced. Band-fitting to the B-F stretching band of BF(4)(-) anion permits detailed assess of ion pairing. The spectroscopically free BF(4)(-) anion, contact ion pair and contact ion dimmers coexist in concentrated solutions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6f56ce9e588b59c6cf98bc5d224daa11 https://doi.org/10.1002/cjoc.200890130 Zobrazit plný text záznamu Plný text