in tetrahydrofuran under inert atmosphere;

in neat (no solvent) react. at >100°C and 50-100 atm in a pressure pipe;;

SbF5 in neat (no solvent) react. of (Ni(PCl3)4) with SBF3 in presence of catalytic amt. of SbF5;;

in neat (no solvent) react. at >100°C and 50-100 atm in a pressure pipe;;

in further solvent(s) byproducts: SO2; react. of KSO2F with (Ni(PCl3)4) under exclusion of air and moisture in m-dichlorobenzene (cooling with ice), stirring for 30 min at ambient temp. and for 2 h at 90 °C;; collecting volatile react. products in cooled U-tube (filled with KSO2F), distilling into second U-tube after evapn. of SO2, distillation of (Ni(PF3)4) in micro-column at 760 torr under N2;;

in neat (no solvent) byproducts: PCl3; heating (Ni(PCl3)4) with excess of PF3 in closed tube for 24 h on steam bath, cooling react. tube with liq. N2 after the react. is finished and distilling off PF3 at -115 °C (vac.), raising temp. to 0 °C;; sepg. upper layer of PCl3 from (Ni(PF3)4), fractional distillation in high vac. with addn. of SbF3 and traces of SbF5;;

in tetrahydrofuran under inert atmosphere;

in neat (no solvent) byproducts: PCl3; decompn. with P(CF3)3 at 80 °C;;