Aminoarsolanes—II. Conformational studies

¹H and ¹³C NMR spectra of six dialkylaminoarsolanes were obtained as a function of solvent, concentration, and temperature. CI mass spectral data were also obtained as a function of retention time for the same compounds. These results suggest that the AsN bond is not labile as compared to the AsCl bond in chloroarsolanes. No evidence for dimer formation was noted either in solution or the gas phase under the investigated experimental conditions. The averaged solution conformation of the 1,3-dioxarsolane ring is discussed in terms of rapid intramolecular conformational averaging; nature of substituents at the 2,4, and 5 positions; and effects of temperature, solute concentration and solvent type.