3,5-Bis(4-bromophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole

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Abstract

In the title compound, C21H16Br2N 2, the central pyrazole ring adopts an flattened envelope conformation, with the stereogenic C atom in the flap position. The deviations from planarity for this ring are relatively minor (r.m.s. deviation = 0.045 Å) and the dihedral angles formed with the N- and Cimine-bound benzene rings are 7.73 (13) and 11.00 (13)°, respectively. By contrast, the benzene ring bound at the chiral C atom is almost orthogonal to the rest of the mol-ecule; the dihedral angle formed between this ring and the pyrazole ring is 79.53 (13)°. In the crystal, the packing is stabilized by C - H⋯N and C - H⋯Br inter-actions.

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Samshuddin, S., Narayana, B., Yathirajan, H. S., Safwan, A. P., & Tiekink, E. R. T. (2010). 3,5-Bis(4-bromophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole. Acta Crystallographica Section E: Structure Reports Online, 66(6). https://doi.org/10.1107/S1600536810015795

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