Mass spectroscopic and matrix isolation studies on the ternary metal halides CsMCl3 (M = Pb, Cd, Co)

Mass spectrometric and matrix isolation infrared studies have been carried out on the vapor species present in the high temperature ternary halide systems Cs/Pb/Cl, Cs/Cd/cl, and Cs/Co/Cl, and for all three systems, both binary and ternary halide molecules are identified. In particular, the ternary species present in the Cs/Pb/Cl system is identified as molecular CsPbCl3, and on the basis of IR band intensities nd isotopic data, a C3v structure is proposed for this species. The high temperature vapors above the Cs/Cd/Cl and Cs/Co/Cl systems also contain ternary CsMCl3 species, but for these molecules, the vibrational data indicate planar C2v geometries involving bidentate coordination at the alkali metal