Formation of 1-phosphapropyne, CH3CP, by pyrolysis of dichloro-(ethyl)phosphine: a He(I) photoelectron spectroscopic study

Abstract

The conditions for the isolation of 1-phosphapropyne, CH₃CP, recently detected by microwave spectroscopy in the products of the gas-phase pyrolysis of PEtCl₂, have been studied by photoelectron spectroscopy. Although CH₃CP is not the major product it can be trapped and separated from other reaction products under controlled conditions and subsequently revaporised. The He(I) photoelectron spectrum of CH₃CP has been assigned and compared with that of FCP and HCP and the related nitrogen analogues.