Molecular structure of bis(trifluoromethyl)hydroxylamine : an electron diffraction study

The molecular structure of bis(trifluoromethyl)hydroxylamine, (CF3)2NOH, has been determined in the vapour phase by the sector microphotometer electron diffraction method. Principal structural parameters with estimated standard deviations in parentheses are: r(N–O) 1·40(3), r(C–N) 1·435(fixed), and r(C–F) 1·322(2)Å; F–C–F 109·8(0·4), C–N–C 120·6(1·3), C–N–O 111·3°(0·8°). The longer N–O bond and smaller sum of angles at nitrogen than in (CF3)2NO result in rather similar F⋯O distances in the two molecules.