摘要:
Four new compounds of the ligand 1-(2-pyridyl)-2-(2-thienyl)ethyne (pythio), viz. [M(pythio)(2)(NO3)(2)] (M = Cu, Co and Ni) and [Zn(pythio)(2)Cl-2] are described. The compounds, prepared from the ligand and the metal salts in acetone or ethanol, are 2:1 ligand:metal complexes wherein the ligand acts as a monodentate nitrogen donor ligand. The single-crystal X-ray structures of the Cu and the Zn compounds show an elongated octahedral CuN2O2O2' chromophore and a tetrahedral ZnN2Cl2 chromophore. The coordination appears not to be influenced by the acetylene groups or by the thiophene groups. (C) 1998 Elsevier Science S.A.