Binuclear bismuth halide complexes (N-Me(2,2'-BipyH))(2)[Bi2X10] (X = Cl, Br): Syntheses, crystal structures, and optical properties

摘要

Binuclear halide complexes (N-Me(2,2'-BipyH)(2)[Bi2X10] (X = Cl (I), Br (II); 2,2'-Bipy = 2,2'-bipyridine) are synthesized by the reaction of solutions of [BiX6](3-) and (N-Me(2,2'-BipyH)(NO3)(2) in 2 M HX. The structure of [Bi2X10](4-) anions consists of octahedral fragments {BiX6} linked by two mu(2)-bridging halide ligands. The structures of the compounds are determined by X-ray diffraction analysis (CIF files CCDC 1455987 (I) and 1455988 (II)). The forbidden gap width E (g) is determined for complex II from the diffuse reflectance spectrum.