Acta Cryst. (2007). C63, o746-o750 [ doi:10.1107/S0108270107052705 ]
Abstract: In the title compounds 5-(3-fluoro-4-phenoxyphenyl)-1,3-biphenyl-4,5-dihydro-1H-pyrazole, C27H21FN2O, (I), 3-(4-chlorophenyl)-5-(3-fluoro-4-phenoxyphenyl)-1-phenyl-4,5-dihydro-1H-pyrazole, C27H20ClFN2O, (II), 5-(3-fluoro-4-phenoxyphenyl)-3-(4-methylphenyl)-1-phenyl-4,5-dihydro-1H-pyrazole, C28H23FN2O, (III), and 5-(3-fluoro-4-phenoxyphenyl)-3-(4-methoxyphenyl)-1-phenyl-4,5-dihydro-1H-pyrazole, C28H23FN2O2, (IV), the five-membered pyrazole ring exists in an envelope conformation. The crystal structure of (I) has three independent C-H intermolecular interactions. In (II), an intermolecular C-Cl contact is present, forming molecular chains. Replacement of this chloro group in (II) by a methyl group yields an isomorphic crystal structure, (III).
Formula: C27H21FN2O, C27H20ClFN2O, C28H23FN2O and C28H23FN2O2
Structure factor file (CIF format) (109.4 kbytes)
Structure factor file (CIF format) (214.5 kbytes)
Structure factor file (CIF format) (212.5 kbytes)
Structure factor file (CIF format) (213.4 kbytes)
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