Two isostructural 3-(5-ar­yl­oxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-(thio­phen-2-yl)prop-2-en-1-ones: disorder and supra­molecular assembly

Shaibah, Mohammed A. E. and Yathirajan, H. S. and Manju, N. and Balakrishna, K. and Rathore, Ravindranath S. and Glidewell, Christopher (2020) Two isostructural 3-(5-ar­yl­oxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-(thio­phen-2-yl)prop-2-en-1-ones: disorder and supra­molecular assembly. Acta Crystallographica Section E, 76 (1). pp. 48-52. ISSN 2056-9890

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Abstract

Two new chalcones containing both pyrazole and thio­phene substituents have been prepared and structurally characterized. 3-(3-Methyl-5-phen­oxy-1-phenyl-1H-pyrazol-4-yl)-1-(thio­phen-2-yl)prop-2-en-1-one, C23H18N2O2S (I), and 3-[3-methyl-5-(2-methyl­phen­oxy)-1-phenyl-1H-pyrazol-4-yl]-1-(thio­phen-2-yl)prop-2-en-1-one, C24H20N2O2S (II), are isomorphous as well as isostructural, and in each the thio­phene substituent is disordered over two sets of atomic sites having occupancies 0.844 (3) and 0.156 (3) in (I), and 0.883 (2) and 0.117 (2) in (II). In each structure, the mol­ecules are linked into sheets by a combination of C—H⋯N and C—H⋯O hydrogen bonds. Comparisons are made with some related compounds.

Item Type:	Article
Uncontrolled Keywords:	heterocyclic compounds, pyrazoles, crystal structure, disorder, molecular conformation, hydrogen bonding, supramolecular assembly
Subjects:	C Chemical Science > Chemistry
Divisions:	Department of > Chemistry
Depositing User:	C Swapna Library Assistant
Date Deposited:	18 Dec 2019 05:37
Last Modified:	18 Dec 2019 05:37
URI:	http://eprints.uni-mysore.ac.in/id/eprint/10251

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