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4-(4-Chloro-benz-yl)-5-methyl-2-phenyl-1H-pyrazol-3(2H)-one. 2011

Shaaban K Mohamed, and Mahmoud A A El-Remaily, and Ahmed M Soliman, and Hossam Abdel-Ghany, and Seik Weng Ng

The five-membered ring of the title compound, C(17)H(15)ClN(2)O, is almost planar (r.m.s. deviation = 0.008 Å), and its phenyl subsitutent is aligned at 34.9 (1)° with respect to this ring. The angle at the methyl-ene C atom is opened to 116.4 (2)°. In the crystal, adjacent mol-ecules are linked by an N-H⋯O hydrogen bond, generating a linear chain along the a axis.

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