Characterization of Molecular Alkali Metal Iodates by Mass Spectrometry and Matrix Isolation IR Spectroscopy

Article abstract of DOI:10.1021/j100203a031

Samples of the solids MIO3 (M = Li, Na, K, Rb, Cs) have been vaporized in vacuo and the ternary products characterized by mass spectrometry, and by infrared spectroscopy in low-temperature nitrogen, oxygen and argon matrices.The molecular species KiO3, RbIO3, and CsIO3 have been identified for the first time and their IR spectra shown to be consistent with overall C_3v symmetry involving tridentate coordination.This conclusion is further confirmed, in the case of CsIO3 isolated in argon, by a detailed analysis of (18)O isotope patterns.In contrast, samples of LiIO3 and NaIO3 appeared to undergo decomposition to the iodide and oxygen.