Abstract
The structures of mixed-ligand complexes [Ni(Pz)2{(i-C4H9)2PS2}2] (I) and [Ni(Pz){(i-C4H9)2PS2}2] n (II) were determined from single-crystal X-ray diffraction data (CAD-4 diffractometer, MoKα radiation, 1527 and 2387 Fhkl, R = 0.0360 and R = 0.0491). The crystals of both complexes are monoclinic with cell dimensions a = 9.180(2), b = 16.002(3), c = 11.547(2) A, β = 104.92(3)°, V = 1639.0(6) A3, Z = 2, space group P21/n and a = 30.718(6), b = 11.036(2), c = 19.606(4) A, β = 118.90(3)°, V = 5819(2) A3, Z = 8, space group C2/c. The crystal structure of I consists of monomer molecules, in which the NiN2S4 unit is a compressed octahedron, and the monodentate Pz molecules are in the trans position. The structure of complex II consists of infinite zigzag chains along the c axis. The Ni atom has a distorted octahedral environment (2N+4S). The bridging bidentate Pz molecules are in the cis position. The packing modes and their interactions in the structures are discussed.
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