Different mol-ecular conformations in the crystal structures of three 5-nitro-imidazolyl derivatives.

ABSTRACT: The crystal structures of (E)-1-methyl-5-nitro-1H-imidazole-2-carbaldehyde O-benzyl-oxime, C₁₂H₁₂N₄O₃, (I), (E)-1-methyl-5-nitro-1H-imidazole-2-carb-alde-hyde O-(4-fluoro-benz-yl) oxime, C₁₂H₁₁FN₄O₃, (II), and (E)-1-methyl-5-nitro-1H-imidazole-2-carbaldehyde O-(4-bromo-benz-yl) oxime, C₁₂H₁₁BrN₄O₃, (III), are described. The dihedral angle between the ring systems in (I) is 49.66 (5)° and the linking N_m-C-C=N (m = methyl-ated) bond shows an anti conformation [torsion angle = 175.00 (15)°]. Compounds (II) and (III) are isostructural [dihedral angle between the aromatic rings = 8.31 

SUBMITTER: Osorio LFB 

PROVIDER: S-EPMC5947808 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature