Fourier transform Raman spectroscopic study of lithium perchlorate solutions in acrylonitrile

✍ Scribed by J. M. Alia; H. G. M. Edwards; J. Moore

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 742 KB
• Volume: 26
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/jrs.1250260819

✦ Synopsis

Abstract

Lithium perchlorate solutions in acrylonitrile (propenenitrile), in a range of concentration between 1 and 6 molal, were studied by using Fourier transform Raman spectroscopy. The new band in the v(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 v~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.