[(C6H5)3PC2H5](1+)*[((C6H5)3P)NiI3](1-)=[(C6H5)3PC2H5][((C6H5)3P)NiI3]
bis(triphenylphosphine)nickel(II) diiodide
[(C6H5)4P](1+)*[((C6H5)3P)NiI3](1-)=[(C6H5)4P][((C6H5)3P)NiI3]
((C6H5)3P)3NiH(CH3CN)(1+)*BF4(1-)=[((C6H5)3P)3NiH(CH3CN)]BF4
[(acetonitrile)(nickel(I))(triphenylphosphine)3](tetrafluoroborate)