Abstract
The molecular structure and vibrational spectra of trimethylarsenite were studied by gas phase electron diffractometry and IR and Raman spectroscopv. The configuration of the O-methyl groups with respect to the lone electron pair of the arsenic atom is established to be close to gosh-gosh-trans. The main geometrical parameters are: bond lengths (ra, Å) As-O 1.780, C-0 1.451, and C-H 1.101; bond angles (deg) As-O-C 115.0, O-As-0 99.5, and O-C-H 115.3. The experimental IR and Raman spectra were obtained for pure liquid and CCl4 solution. The frequencies and forms of normal vibrations were calculated.
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Knyazev, B.A., Kuchkaev, B.I. & Vasiliev, A.S. Molecular structure and vibrational spectra of trimethylarsenite. J Struct Chem 40, 873–877 (1999). https://doi.org/10.1007/BF02700694
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DOI: https://doi.org/10.1007/BF02700694