Syntheses and Characterizations of （CH3CH2CH2CH2NH3）6（BiI6）（I）2I3 and （NH3CH2CH2NH3）2Bi2I10

The title compounds have been respectively synthesized by solution process and solvothermal reaction, and their crystal structures were determined by X-ray diffraction method. For （CH3CH2CH2CH2NH3）6（BiI6）（I）2I3 1, it crystallizes in tficlinic, space group P1^- with Mr = 2049.76, a = 8.5719（1）, b = 11.7461（3）, c = 15.700（1）A, V = 1451.4（1）A^3, Z = 1, Dc = 2.345 g/cm^3, F（000） = 924, μ（MoKα） = 8.907 mm^-1, T = 293（2） K, the final R = 0.0655 and wR = 0.0804 for 2399 observed reflections with I 〉 2σ（I）. For （NH3CH2CH2NH3）2Bi2I10 2, it crystallizes in monoclinic, space group P21/n with Mr= 1811.20, a = 8.434（4）, b = 13.862（6）, c = 13.362（6）A, V = 1499.9（12）A^3, Z = 2, Dc = 4.010 g/cm^3, F（000） = 1536,μ（MoKα） = 22.007 mm^-1, T = 293（2） K, the final R = 0.0584 and wR = 0.1451 for 1798 observed reflections with I 〉 2σ（I）. The structures of 1 and 2 contain halobismuthate monomer and dimers, respectively. It is noteworthy that the dimers and their organic counters in 2 connect each other by N…I hydrogen bonds to form a layered structure, and the electrostatic interactions and crystal packing forces between layers give rise to the packing of the crystal. The optical absorption spectra of 1 and 2 reveal the appearance of sharp optical gaps of 2.13 and 2.01 eV, respectively.

Syntheses and Characterizations of(CH_3CH_2CH_2CH_2NH_3)_6(BiI_6)(I)_2I_3 and (NH_3CH_2CH_2NH_3)_2Bi_2I_(10)

The title compounds have been respectively synthesized by solution process and solvothermal reaction,and their crystal structures were determined by X-ray diffraction method.For(CH3CH2CH2CH2NH3)6(BiI6)(I)2I3 1,it crystallizes in triclinic,space group P1 with Mr=2049.76,a=8.5719(1),b=11.7461(3),c=15.700(1),V=1451.4(1)3,Z=1,Dc=2.345 g/cm3,F(000)=924,μ(MoKα)=8.907 mm-1,T=293(2) K,the final R=0.0655 and wR=0.0804 for 2399 observed reflections with I > 2σ(I).For(NH3CH2CH2NH3)2Bi2I10 2,it crystallizes in monoclinic,space group P21/n with Mr=1811.20,a=8.434(4),b=13.862(6),c=13.362(6),V=1499.9(12)3,Z=2,Dc=4.010 g/cm3,F(000)=1536,μ(MoKα)=22.007 mm-1,T=293(2) K,the final R=0.0584 and wR=0.1451 for 1798 observed reflections with I > 2σ(I).The structures of 1 and 2 contain halobismuthate monomer and dimers,respectively.It is noteworthy that the dimers and their organic counters in 2 connect each other by N···I hydrogen bonds to form a layered structure,and the electrostatic interactions and crystal packing forces between layers give rise to the packing of the crystal.The optical absorption spectra of 1 and 2 reveal the appearance of sharp optical gaps of 2.13 and 2.01 eV,respectively.