摘要
The title compound ([NH3(CH2)2NH2(CH2)2NH3]BiCl6, Mr= 527.88) has been synthesized by diffusion method and its crystal structure was determined by X-ray diffraction method. It crystallizes in orthorhombic, space group P212121 with a = 6.8444(4), b = 13.6329(10), c = 15.6641(12)A°, V= 1461.60(18)A°^3, Z= 4, Dc = 2.399 g/cm^3, F(000) = 984,μ(MoKα) = 13.132 mm^-1 and T = 293(2) K. The final R = 0.0294 and wR = 0.0490 for 2325 observed reflections with I 〉 2σ(I). Each bismuth atom in the present compound is coordinated by six chlorine atoms to furnish a slightly distorted octahedral geometry. It is worthy to note that each adjacent [BiCl6]^3- and [H3dien]^3+ entities are linked by hydrogen bonds to form two right- and left-handed helical double-chains running along the b axis. These two helical double-chains are interlaced into quadruple-stranded braid to give rise to a three- dimensional network. The optical absorption spectrum of the compound reveals the appearance of a sharp optical gap of 3.30 eV.
The title compound ([NH3(CH2)2NH2(CH2)2NH3]BiCl6, Mr= 527.88) has been synthesized by diffusion method and its crystal structure was determined by X-ray diffraction method. It crystallizes in orthorhombic, space group P212121 with a = 6.8444(4), b = 13.6329(10), c = 15.6641(12)A°, V= 1461.60(18)A°^3, Z= 4, Dc = 2.399 g/cm^3, F(000) = 984,μ(MoKα) = 13.132 mm^-1 and T = 293(2) K. The final R = 0.0294 and wR = 0.0490 for 2325 observed reflections with I 〉 2σ(I). Each bismuth atom in the present compound is coordinated by six chlorine atoms to furnish a slightly distorted octahedral geometry. It is worthy to note that each adjacent [BiCl6]^3- and [H3dien]^3+ entities are linked by hydrogen bonds to form two right- and left-handed helical double-chains running along the b axis. These two helical double-chains are interlaced into quadruple-stranded braid to give rise to a three- dimensional network. The optical absorption spectrum of the compound reveals the appearance of a sharp optical gap of 3.30 eV.
基金
We gratefully acknowledge the financial support of the NNSF of China (20131020) and NSF of Fujian Province (2003I031)