2-(8-Bromoimidazo[1,2-a]pyridin-2-yl)-N?-[(E)-4-diethylamino-2- hydroxybenzyl-idene]acetohydrazide dihydrate
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Date
2012
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Abstract
In the title compound, C <inf>20</inf>H <inf>22</inf>BrN <inf>5</inf>O <inf>2</inf>·2H <inf>2</inf>O, the Schiff base mol-ecule exists in an E conformation with respect to the acyclic C=N bond. An S(6) ring motif is formed via an intra-molecular O - H?N hydrogen bond. The dihedral angle between the imidazo[1,2-a]pyridine system and the benzene ring is 84.62 (5)°. In the crystal, N - H?O, O - H?O, O - H?N, C - H?O and C - H?Br hydrogen bonds link the mol-ecules into a three-dimensional network. The crystal packing is further stabilized by C - H?? and ?-? inter-actions [centroid-centroid distance = 3.5365 (7) Å].
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data-to-parameter ratio = 21.9, mean ?(C-C) = 0.002 Å, R factor = 0.027, single-crystal X-ray study, T = 100 K, wR factor = 0.077
Citation
Acta Crystallographica Section E: Structure Reports Online, 2012, 68, 3, pp. o816-o817