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)
