in neat (no solvent) condensation of liquid SO2 on a mixt. of (NPCl2)4 and KF; heating at 98-100 °C for 22 days;; removal of an excess of SO2; fractionation;;

in neat (no solvent) react. of P3N5 with NF3 at 710 °C;; fractional vac. distn.;;

in neat (no solvent) react. at 280-350 °C; complete react. after 2 1/2 h; passing through N2 at the end of the react.;; distn. off the product or removal of product with N2;;

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in nitrobenzene heating a soln. of (NPCl2)4 in C6H5NO2 with solid 90 percent KSO2F on refluxing; react. starting at 80. degree.C under evolution of gas;; condensation of (NPCl2)3 and formed SO2 on cooling with ice-water; distn. in vac.;;

in neat (no solvent) heating P3N5 at 710 °C on passing in gaseous CF3SF5; flushing with N2 before and after react.; cooling the receivers with dry ice-actone;; fractional vac. distn.;;

in neat (no solvent) react. of (NPCl2)4 with KSO2F at 120-125 °C;;

in not given byproducts: N4P4F4Cl4; react. of (NPCl2)3 with PbF2;; freezing out, dissolving in petroleum ether; fractionation, at 50 °C (NPF2)3, at 70-95 °C (NPF2)4;;

in diethyl ether reaction of C4H9Li and Br(C5H4)Fe(C5H5) to Li(C5H4)Fe(C5H5) in diethyl ether, -78°C, addn. of soln. of (NPF2)4 in diethyl ether, slowly warmed up to room temp., 4h at room temp., solvent removed, under N2; chromy. (hexane), Fe(C5H5)2 removed by sublimation (18h, 30°C, 0,5Torr), chromy. of residue (silica gel); P4N4F6((C5H4)Fe(C5H5)) detected by MS;