Structural studies of metal complexes with sulphur-containing bidentate ligands. Part I. Crystal and molecular structures of trimeric bis-(dithiobenzoato)-nickel(II) and -palladium(II)

Abstract

The crystal and molecular structures of the title compounds have been determined by the heavy-atom method and refined by anisotropic least-squares methods to final R of 0.088 (Ni) and 0.051 (Pd). The nickel complex crystallises in space group P2₁/n, with Z= 6 in a unit cell of dimensions a= 5.809(10), b= 17.306(10), c= 21.392(10)Å, β= 93° 56′± 5′. The palladium complex crystallises in space group P2₁/c, with Z= 6 in a unit cell of dimensions a= 5.943(10), b= 12.662(10), c= 28.707(10)Å, β= 93° 36′± 10′.

Although the two structures are similar, both consisting of trimeric units, in which the metal co-ordination is essentially square-planar, there are differences in the metal–sulphur intratrimer interactions.