FOURIER-TRANSFORM RAMAN-SPECTROSCOPIC STUDY OF LITHIUM PERCHLORATE SOLUTIONS IN ACRYLONITRILE

被引：23

作者：

ALIA, JM

EDWARDS, HGM

MOORE, J

机构：

[1] Chemistry and Chemical Technology, University of Bradford, Bradford, West Yorkshire, BD7 1DP, Richmond Road

来源：

JOURNAL OF RAMAN SPECTROSCOPY | 1995年 / 26卷 / 8-9期

关键词：

D O I：

10.1002/jrs.1250260819

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Lithium perchlorate solutions in acrylonitrile (propenenitrile) in a range of concentration between 1 end 6 molal, were studied by using Fourier transform Raman spectroscopy. The new band in the nu(CN) region proceeding from the bound species Li+...(acrylonitrile)(n) and the modifications in the C-C stretching band were studied in detail by means of deconvolution and band-fitting procedures. An average solvation number of ca, 2.3 was obtained without any correction for the ion pairing. The data obtained in the analysis of the perchlorate anion nu(1) (symmetric stretch) band allow us to quantify the concentration of the different species (free perchlorate, solvent-separated ion pairs and contact ion pairs) present, and to obtain a more realistic solvation number for the lithium ion in acrylonitrile solutions. This solvation number was estimated at 3.0 +/- 0.1.

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页码：715 / 726

页数：12

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