Etude en spectrographie infrarouge des groupes liés à un atome de phosphore dans des phosphorhydrazides cycliques et acycliques

Twenty cyclic or acyclic phosphorhydrazides containing the group have been studied with i.r. spectroscopy. The interaction between the lone pair of atom N1 and the N2H2 or N2HR group is significantly weaker than in ordinary hydrazines. This is interpreted as originating from a partial delocalization of the N1 doublet towards phosphorus.