Isolation, structure and MO calculational investigations of a highly stable, hydrogen-bonded primary amine–phosphine oxide adduct, 2-aminobenzothiazole–HMPA, C<sub>6</sub>H<sub>4</sub>SC(N)NH<sub>2</sub>OP(NMe<sub>2</sub>)<sub>3</sub>; a possible model to explain the carcinogenicity of HMPA (HMPA = hexamethylphosphoramide)
Journal of the Chemical Society. Chemical communications