Abstract
A single crystal X-ray structure analysis of two polymorphs of ethyl 2-(2-chlorophenyl)-4-hydroxy-5-oxo-1-phenyl-2,5-dihydro-1H-pyrrole-3-carboxylate, i.e. I (Z′ = 1) and II (Z′ = 4), is performed. It is shown that the molecular geometries are the same in I and II, and the same bifurcated O-H⋯O hydrogen bonds (involving hydroxyl and ester C=O groups) exist between the adjacent molecules, giving rise to molecular dimers which, however, are different in I and II: centrosymmetric (heterochiral) and homochiral, respectively.
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Text © The Author(s), 2019, published in Zhurnal Strukturnoi Khimii, 2019, Vol. 60, No. 4, pp. 688–696.
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Ramazani, A., Ahankar, H., Ślepokura, K. et al. Single Crystal X-Ray Structural Analysis of Two Polymorphs of Ethyl 2-(2-Chlorophenyl)-4-Hydroxy-5-Oxo-1-Phenyl-2,5-Dihydro-1H-Pyrrole-3-Carboxylate. J Struct Chem 60, 662–670 (2019). https://doi.org/10.1134/S0022476619040188
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DOI: https://doi.org/10.1134/S0022476619040188