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 neat (no solvent) heating Ni(C5H5)2 and PF3 for several days in closed tube to 65 °C;;

in neat (no solvent) at higher temp.;;

in neat (no solvent) treating (Ni(CO)4) for 100 h with PF3 at 40 °C;;

carbon monoxide in neat (no solvent) High Pressure; react. with CO at 100 °C and 350 atm;;

in neat (no solvent) High Pressure; prepn. from Ni(PF3)4 and CO at high pressure;;

in neat (no solvent) decompn. at elevated temp.;;

Dimethylglyoxime; nitric acid in ethanol; ammonia; water byproducts: NH4F; addn. of aq. NH4OH to Ni(PF3)4, cooling with liquid nitrogen, mixing for 15 min, addn. of HNO3, adjusting pH to 7-8 by addn. of NH4OH, heating to 80°C, pptg. by addn. of alcoholicammoniacal soln. of dimethylglyoxime; filtn., heating at 850°C;