Raman and infrared spectroscopic investigation of alkyl derivatives of arsenic acid: Part VI . On the AsO-bond - calculation of force constants and vibrational energy distribution in compounds of the type RAsO 3X 2 And R 2A

Abstract

Normal coordinate analyses and force constant calculations were carried out using frequencies of infrared and Raman-spectra of the molecules and ions RAsO 3 2−, RAs(O)(OR) 2, RAs(O)(OH) 2, RAs(OH)O 2 −, RzAsO 2 −, R 2As(O)OH, and [R' 2As(OH) 2] + (R = CH 3, R' = C 2H 5). Comparing bond orders of the AsO bond with those in corresponding phosphorus, selenium and sulphur compounds, we found influences of the electron deficiency effect and of bond polarity.