in melt linear polymerization (according to Korshak, V. V. et al., Acta Polymer., 31, 568 (1980)); 250°C/50 h;;

[N(PCl2NP(C6H5)3)2]Cl in dichloromethane (N2); a soln. of Si compd. added to a soln. of N(PCl2NP(C6H5)3)2Cl, stirred for 24 h at 25°C; not isolated, detected by NMR;