Synthesis, Crystal Structure and Luminescent Properties of the Indium(III) Complex Based on 2,6-Bis(1-phenylbenzimidazol-2-yl)pyridine

The complex [In(bpbp)Cl-3]center dot H2O, where bpbp is 2,6-bis(1-phenylbenzimidazol-2-yl)-pyridine (bpbp), was synthesized and characterized by X-ray single-crystal structure analysis. For the complex: C31H12C13InN5 center dot H2O, M-r = 702.71, monoclinic, space group, P2(1)/n, a = 9.3918(10), b = 21.024(2), c = 14.5323(15) angstrom, beta = 96.938(2)degrees, V = 2848.4(5) angstrom(3), Z = 4, D-c = 1.639 g/cm(3), lambda = 0.71073 angstrom, mu(MoK alpha) = 1.147 mm(-1), F(000) = 1408, S = 1.00, R = 0.0430 and wR = 0.1438 for 4620 observed reflections with I> 2 sigma(I). It is a neutral complex. The In(III) ion adopts a distorted trigonal bipyramidal geometry coordinated by three nitrogen atoms of the ligand and three chlorine atoms. The complex emits blue luminescence with emission peaks at 430 nm in the solid state.