Structural studies of spiroarsoranes derived from 2-aminophenols

This paper describes the structural studies of 2-phenyl-9,9′-dimethyl-2,2′-spirobis(1,3,2-λ⁵-benzoxazarsoline) 5, 2-phenyl-8,8′-dimethyl-2,2′-spirobis(1,3,2-λ⁵-benzoxazarsoline) 6 by ¹H,¹³C,¹⁵N NMR in ²H₆]DMSO and CDCl₃. The solid state studies were made by X-ray experiments. Infrared spectroscopy was obtained in CDCl₃ and the vibrational signals were assigned using DFT calculations. The nature of the As–N, As–C and As–O bonds in these compounds was established by NBO studies.