The infrared absorption spectra and structure of some simpler alkoxides of lithium,sodium and potassium

The infrared absorption spectra of the crystalline methoxides of lithium, sodium and potassium and their deuterated derivatives, as well as the ethoxides of lithium and sodium, have been measured in the 2–25m region and interpreted. It has been shown that the successive displacement of the C-H (C-D) stretching frequencies to the longwave region, on passing from methanol to the methoxides of lithium, sodium and potassium, is determined by the differences in the nature of the O-H, O-Li, O-Na, and O-K bonds. The stretching frequency displacement effect and the structure of the compounds are discussed.In conclusion, we thank A. A. Trushanov for help in conducting the experiments.