(2-Bromoethyl)trimethylammonium bromide and thiourea: A comparative study of three crystal structures
作者:Yuan Yang、Bing Yin、Qi Li、Ulli Englert
DOI:10.1016/j.molstruc.2008.11.044
日期:2009.2
N–H···Br bonds account for the most relevant contacts in this solid. 2·4 thiourea represents a tetrathiourea solvate of the previous structure; packing of the constituents is dominated by classical hydrogen bonding involving N–H as donor and S or Br− as acceptor groups. The compound can be understood as an anionic host lattice of thiourea molecules and bromide anions which accommodates the isothiuronium cations
摘要 离子化合物 [(CH3)3NCH2CH2Br]Br (1) 和 [(CH3)3NCH2CH2SC(NH2)2]Br2 (2) 的晶体结构以及 1 与硫脲的反应产物 [(CH3)3NCH2CH2SC( NH2)2]Br2·4(NH2)2CS(2·4硫脲)已通过单晶X射线衍射测定,1为273 K,2·4硫脲为2,2为296 K。晶体数据:1,空间P21 组,a = 7.207(2) A,b = 8.475(2) A,c = 7.433(2) A,β = 108.56(3)°,Z = 2,R1 = 0.0646 和 wR2 = 0.1598;2、空间群 P21/c, a = 11.782(1) A, b = 9.365(1) A, c = 11.689(1) A, β = 107.63(1)°, Z = 4, R1 = 0.0249 and wR2 = 0.0527, 2·4 硫脲, 空间群