Evidence for rotational isomers of methylaminobis(trifluoromethyl)-phosphine and the infrared spectra of the series RNH·P(CF<sub>3</sub>)<sub>2</sub>where R = Me, Et, Bu<sup>t</sup>, or Ph
作者:N. N. Greenwood、B. H. Robinson、B. P. Straughan
DOI:10.1039/j19680000230
日期:——
The infrared spectrum of methylaminobis(trifluoromethyl)phosphine, MeNH·P(CF3)2, has a well resolved doublet in the N–H stretching region and this is shown to result from the presence of two rotationalisomers in thermal equilibrium. The methyl proton n.m.r. spectrum over a range of temperature is consistent with this. The infrared spectrum of the corresponding ethyl compound shows the effect much