Four substituted pyrazolines

作者：Chopra Deepak^*; Mohan T P; Vishalakshi B; Row T N Guru

来源：Acta Crystallographica Section C-Crystal Structure Communications, 2007, 63: O746-O750.

DOI：10.1107/S0108270107052705

In the title compounds 5-(3-uoro-4-phenoxyphenyl)-1,3-biphenyl- 4,5-dihydro-1H-pyrazole, C27H21FN2O, (I), 3-(4-chlorophenyl)- 5-(3-uoro-4-phenoxyphenyl)-1-phenyl-4,5-di-hydro-1H- pyrazole, C27H20ClFN2O, (II), 5-(3-uoro-4-phenoxyphenyl)3-(4-methylphenyl)-1-phenyl-4,5-dihydro-1H-pyrazole, C28H23FN2O, (III), and 5-(3-uoro-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 center dot center dot center dot pi intermolecular interactions. In (II), an intermolecular C-Cl center dot center dot center dot pi contact is present, forming molecular chains. Replacement of this chloro group in (II) by a methyl group yields an isomorphic crystal structure, (III).

• 出版日期2007-12