Dahmani Siham, Kandri Rodi Youssef, Luis Santiago V, Essassi El Mokhtar, El Ammari Lahcen
Acta Crystallogr Sect E Struct Rep Online. 2011 Jun 1;67(Pt 6):o1390. doi: 10.1107/S1600536811017077. Epub 2011 May 11.
There are two independent mol-ecules in the asymmetric unit of the title compound, C(10)H(10)BrN(3)O(2), which are linked by N-H⋯O and C-H⋯O hydrogen bonds. The fused ring systems in both mol-ecules are nearly planar with maximum deviations of 0.001 (3) and 0.029 (3) Å. All non-H atoms of the first mol-ecule are approximately co-planar whereas in the second mol-ecule, the ethyl group is almost perpendicular to the imidazo[1,2-a]pyridine system, the C-O-C-C torsion angles in the carb-oxy-lic acid ethyl group being -179.8 (4) and 112.1 (5)°, respectively.
标题化合物C(10)H(10)BrN(3)O(2)的不对称单元中有两个独立分子,它们通过N-H⋯O和C-H⋯O氢键相连。两个分子中的稠环系统几乎呈平面状,最大偏差分别为0.001(3) Å和0.029(3) Å。第一个分子的所有非H原子大致共平面,而在第二个分子中,乙基几乎垂直于咪唑并[1,2-a]吡啶系统,羧酸乙酯基团中的C-O-C-C扭转角分别为-179.8(4)°和112.1(5)°。