Raman spectroscopic study of silver nitrate solutions in acrylonitrile at different temperatures (238–343 K)

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 52; no. 11; pp. 1403 - 1415
• Main Authors: Alía, J.M., Edwards, H.G.M., Moore, J.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-10-1996
• Subjects: Acrylonitrile; Raman; Silver nitrate, Vibrational; Acrylonitrile; Silver nitrate, Vibrational; Raman
• ISSN: 1386-1425
• DOI: 10.1016/0584-8539(96)01705-9

The association between acrylonitrile (CH
2CHCN) and Ag
+ ion has been studied by Raman spectroscopy. The region of the ν(CN) fundamental, including the new feature attributed to cation-associated acrylonitrile, has been recorded over a temperature range 238–343 K, with concentrations between 1.0 and 6.0
m silver ion (as silver nitrate). The wavenumber of the new band (2249 cm
−1, displaced about +20 cm
−1 from the bulk solvent CN stretching) was independent of the concentration, although a small temperature effect was detected. The evolution of the associated acrylonitrile concentration with temperature suggests a flimsy solvation sphere. The experimental results are interpreted in dynamic terms, assuming a general equilibrium between positively and negatively solvated silver ions.