in neat (no solvent) formation of a red soln. on passing N2O4 in POCl3 cooled at 5 then at -20 °C; crystn. of P2O6NCl2;; the soln. contains a small amount of P2O3Cl4;;
in neat (no solvent) byproducts: NOCl, NO2Cl, NO; passing dry N2O4 over the surface of freshly distd. PCl3 cooled at -10 °C; absortion under formation of a dark red liq.; expelling NO, N2O3, NOCl, NO2Cl and pptn. of P2O6NCl2; liquid phase contg. POCl3, P2O3Cl4 and a small amount of P4O4Cl10;; isolation of liquid products by fractionation; yield of P2O3Cl4 17 percent and of P4O4Cl10 5 percent;;
