M. Taillefer et al., Synthesis of the sodium diphenylbis(cyanamido)phosphonium diylide by a newvariation of the Staudinger reaction, CHEM COMMUN, (6), 1999, pp. 565-566
The first example of a stabilized diaminophonium diazaylide, sodium dipheny
lbis(cyanamido)phosphonium diylide, has been synthesized by a new variation
of the Staudinger reaction; the corresponding copper complex can be descri
bed as a discrete dimeric unit with [Ph2P(NCN)(2)](-) in both uni- and bi-d
entate modes (X-ray structure).