Synthesis and structural characterization of the molecular complex between bismuth trichloride and pyrene

Abstract

The preparation of a bismuth charge-transfer molecular complex with pyrene, 2BiCl₃·pyrene, and the determination of its structure by single-crystal X-ray analysis is described. Crystals are monoclinic, with a= 10.564(3), b= 12.564(3), c= 7.220(1)Å, β= 90.33(7)°, Z= 4, space group P2₁/c, and R= 0.0669. The structure contains two pyramidal BiCl₃ units interacting with one centrosymmetrical pyrene molecule. Two chlorine atoms are bridging with Bi ⋯ Cl distances of 3.154(12) and 3.347(12)Å, which connect the BiCl₃ units in zig-zag chains interlayered by the organic molecules.