A tetra­nuclear cadmium(II) complex based on the 2-(quinolin-8-yl­oxy)acetonitrile ligand

The hydro­thermal reaction of 2-(quinolin-8-yl­oxy)acetonitrile and Cd(ClO₄)₂ yielded the noncentrosymmetric coordination complex tetra­kis­[[mu]-2-(quinolin-8-yl­oxy)acetato]­tetra­kis­[[mu]-2-(quinolin-8-yl­oxy)acetonitrile]­tetra­cadmium tetra­kis­(perchlorate) dihydrate, [Cd₄(C₁₁H₈NO₃)₄(C₁₁H₈N₂O)₄](ClO₄)₄·2H₂O. The local coordination environment around the Cd^II cation can be best described as a capped octa­hedron defined by two N atoms and five O atoms from three ligands. The Cd^II cations are linked by the ligands with Cd-O-Cd and Cd-O-C-C-O-Cd bridges, forming tetra­nuclear units, there being two independent tertranuclear units in the structure. The fourfold rotoinversion centre sits at the centre of each Cd₄ core. The two perchlorate anions in the asymmetric unit are linked by the water mol­ecule through O-H...O hydrogen bonds.

Bis{tris­[(1H-benzimidazol-3-ium-2-yl)methyl]amine} tetra­aqua­octa-[mu]₂-chlorido-octa­chloridopenta­cadmate(II) monohydrate

The structure of the anion is a novel chloride-bridged penta­nuclear cluster. The five unique Cd^II centres have quite different coordination environments.

A tri­methyl­sulfonium salt with a novel polymeric cadmate anion

A rare two-dimensional organically templated halocadmate with a novel polymeric anion has been synthesized and characterized. It consists of tri­methyl­sulfonium cations sandwiched between layers of a two-dimensional [mu]₂-chlorido-di-[mu]₂-thio­cyanato-cadmate(II) polyanion.