The title compound, [Ni(C5H10NS2)(C28H28P2)]ClO4, is planar. The pairs
of Ni-S [2.2089 (8) and 2.2075 (8) Angstrom] and Ni-P [2.1945(7) and
2.1932(8) Angstrom] bond lengths are respectively equal, and the P-Ni-
P angle [95.12(3)degrees] is large as a consequence of the flexible bu
tyl chain between the two P atoms. The butyl chain lies on one side of
the planar NiS2P2 chromophore and two of the phenyl rings are arrange
d laterally above the plane.