An unusual chain cadmium(II) coordination polymer: catena-poly-[[2,2 '-bipyridyl-kappa N-2,N ')-cadmium(II)]-di-mu-chlorido-[(2,2 '-bipyridl-kappa N-2,N ')-cadmium(II)-di-mu-thiocyanato-kappa N-2 : S;kappa S-2 : N]

摘要

The title complex, [CdCl(NCS)(C10H8N2)](n), represents an unusual Cd-II coordination polymer constructed by two types of anionic bridges and 2,2'-bipyridyl (bipy) terminal ligands. These two types of bridges are arranged around inversion centers. The distorted octahedral coordination of the CdII center is provided by two chloride ions, one N- and one S-donor atom from two thiocyanate ions, and a pair of N atoms from the chelating bipy ligand. Interestingly, adjacent CdII ions are interconnected alternately by paired chloride [Cd center dot center dot center dot Cd = 3.916 (1) angstrom] and thiocyanate bridges [Cd center dot center dot center dot Cd = 5.936 (1) A] to generate an innite one-dimensional coordination chain. Furthermore, weak interchain C-H center dot center dot center dot S interactions between the bipy components and thiocyanate ions lead to the formation of a layered supramolecular structure.