Synthesis and crystallographic characterization of some derivatives of benzimidzole

摘要

Three derivatives of benaimidazole have been synthesized and characterized based on ~1H and ~(13)C NMR,FTIR,FAB-mass and UV spectra,and the structures of two compounds are characterized based on single crystal XRD studies. Existence of both inter-and intra-molecular hydrogen bonds has been identified in the case of 2-(o-aminophenyl)benzimidazole amine and not in case of N-methyl-2-(o-nitrophenyl)benzimidazole. While the former is a completely planar molecule,the latter is not. Both the compounds exhibit interesting lattice structures.