Crystal Structure of Bis(O-Propyldithiocarbonato-κ²S,S′)(2,2′-bipyridine-κ²N,N′)nickel(II)

抄録

The title complex, bis(O-propyldithiocarbonato-κ²S,S′)(2,2′-bipyridine-κ²N,N′)nickel(II) [Ni(S₂COCH₂CH₂CH₃)₂(C₁₀H₈N₂)], was synthesized by the reaction of bis(O-propyldithiocarbonato)nickel(II) with the bidentate ligand 2,2′-bipyridine in acetone. It crystallized in the tetragonal space group I42d with the following unit-cell parameters: a = 22.071(4), c = 9.189(3)Å and Z = 8. The crystal structure was solved by direct methods, and refined by full-matrix least-squares procedures to a final R-value of 0.0311 for 1779 observed reflections. The pyridine ring makes a dihedral angle of 86.21(1)° with the dithiocarbonato ring. The Ni²⁺ ion is in a strongly distorted octahedral coordination environment formed by an N₂S₄ donor set, defined by two chelating dithicarbonate anions as well as a 2,2′-bipyridine ligand with the Ni²⁺ ion located at the crystallographic two-fold axis of rotation (Wyckoff letter : d).