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(E,Z)-2-(2-chloro-5-nitrostyryl)-1-(1-propenyl)benzimidazole.

Acta crystallographica. Section C, Crystal structure communications (1997-07-15)
D E Bacelo, O Cox, L A Rivera, M Cordero, S D Huang
ABSTRACT

The title compound, C18H14ClN3O2, was synthesized by the condensation of 2-chloro-5-nitrobenzaldehyde with 2-methyl-1-propenylbenzimidazole, and the molecule comprises a 2-chloro-5-nitrobenzene and a 1-(Z)-propenylbenzimidazole. The two aromatic moieties are conjugated through the vinyl group. The dihedral angle between the two rings is 1.4(6) degrees. The propenyl group lies out of the benzimidazole plane with a dihedral angle of 112.9(9) degrees.

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Sigma-Aldrich
2-Chloro-5-nitrobenzaldehyde, 97%