La basicité de l'atome d'azote dans quelques iminophosphanes (?P==N_R) et aminophosphanes (?P_NR2). Etude en spectrographie infrarouge

Using i.r. spectroscopy the lone pair basicity of a nitrogen atom on two iminophosphanes (PN-) and six aminophosphanes (PN-) has been estimated. This was done measuring the decreasing ΔνXH between νXH absorption of one XH vibrator (HO- or HN) bonded to a nitrogen atom by hydrogen bonding (PN … HX; PN … HX) and the free absorption νXH of the same vibrator. For identical substituents on the phosphorus atom, the basicity of nitrogen in iminophosphanes is more important than in aminophosphanes.