Raman spectral study of the Mg(ClO<inf>4</inf>)<inf>2</inf>NaNCSH<inf>2</inf>O system at ambient and elevated temperatures

Abstract

Raman spectra of Mg(ClO4)2NaNCSH2O mixtures were analysed as a function of the concentration ratio of the components at ambient and elevated temperatures. The strong perturbation of the thiocyanate spectrum observed in the regions of the ν1 and ν3 vibrations is interpreted in terms of complex formation. Band intensity measurements of resolved bands gave evidence for two complex species: [MgNCS]+ and [Mg(NCS)2], the former being discernible over the whole concentration range studied. The variations in the spectrum of the Td perchlorate ion at very low water‐to‐salt molar ratios are explained as indicating a coordination of ClO4− unit and lowering of the symmetry of C2ν. Copyright © 1989 John Wiley & Sons Ltd.