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Four substituted pyrazolines

Chopra, Deepak and Mohan, TP and Vishalakshi, B and Row, Guru TN (2007) Four substituted pyrazolines. In: Acta Crystallographica Section C - Crystal Structure Communications, 63 (12). o746-o750.

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Abstract

In the title compounds 5-(3-fluoro-4-phenoxyphenyl)-1,3-biphenyl-4,5-dihydro-1H-pyrazole, $C_{27}H_{21}FN_2O$, (I), 3-(4-chlorophenyl)-5-(3-¯uoro-4-phenoxyphenyl)-1-phenyl-4,5-dihydro-1H-pyrazole, $C_{27}H_{20}ClFN_2O$, (II), 5-(3-fluoro-4-phenoxyphenyl)-3-(4-methylphenyl)-1-phenyl-4,5-dihydro-1H-pyrazole, $C_{28}H_{23}FN_2O$, (III), and 5-(3-fluoro-4-phenoxyphenyl)-3-(4-methoxyphenyl)-1-phenyl-4,5-dihydro-1H-pyrazole, $C_{28}H_{23}FN_2O_2$, (IV), the five-membered pyrazole ring exists in an envelope conformation. The crystal structure of (I) has three independent $C-H...\pi$ intermolecular interactions. In (II), an intermolecular $C-Cl...\pi$ contact is present, forming molecular chains. Replacement of this chloro group in (II) by a methyl group yields an isomorphic crystal structure, (III).

Item Type: Journal Article
Additional Information: Copyright of this article belongs to International Union of Crystallography.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 10 Jun 2008
Last Modified: 19 Sep 2010 04:45
URI: http://eprints.iisc.ernet.in/id/eprint/14256

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