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A second ortho-rhom-bic polymorph of 4-{[(1 E,2 E)-3-(4-meth-oxy-phen-yl)prop-2-en-1-yl-idene]amino}-1,5-dimethyl-2-phenyl-1 H-pyrazol-3(2 H)-one

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The second ortho-rhom-bic polymorph of the title compound, C21H21N3O2, (I), crystallizes in space group Pna21, compared to Pbca for the first ortho-rhom-bic polymorph (Ii ) [Obasi et al. (2016 ▸). J. Mol. Struct. 1120, 180-186]. The difference in the structur... ...