1093254-07-9Relevant articles and documents
Preparation, mechanism, and supramolecular structure study of a novel benzimidazole-hydrate
Hong, Yong,Xiao, Jing-Yi,Huang, Ke-Long,Yu, Jin-Gang,Huang, Du-Shu
experimental part, p. 546 - 550 (2011/06/19)
A novel bis[2-(2-chloro-4-fluorophenyl)-1HBenzimidazole]- hydrate was prepared from Schiff base, and its single crystalline was obtained. The single crystalline was characterized by X-ray crystallography, and the results shows that the title complex belongs to the triclinic system, space group (P1) with lattice parameters a = 7.592 (2) A , b = 7.595(2) A , c = 11.886 (3) A , V = 574(3) A 3, Mr = 352.33, Dc = 1.478 g/cm 3, μ(MoKα) = 0.33 mm-1, F(000) = 262, Z = 1, the final R = 0.090 and wR = 0.209 for 2,315 observed reflections (I>2σ(I)). The crystal structure is formed by two benzimidazole molecules which are linked by a water molecule. A UV-Vis spectrophotometer and a fluorophotometer were used to detect the benzimizadole-hydrate crystal transformation process, which shows that benzimidazole-hydrate can only be formed from Schiff base effectively when ortho-hydroxyl group does not exist in benzaldehyde. The synthesis mechanism was also discussed. Compared with its Schiff base, benzimidazole-hydrate displays stronger fluorescence. Springer Science+Business Media, LLC 2010.