Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The products from the replacement of two chlorofunctions of PCl 3 by a pair of phosphoniumylidyl substituents or by both a phosphoniumylidyl and an amino substituent are ionic phosphenium chlorides and not covalent chlorophosphines. ... One or two chlorofunctions of PCl 3 are ...