Acta Cryst. (2007). C63, o704-o710 [ doi:10.1107/S0108270107049426 ]
Abstract: In the molecular structures of a series of substituted chalcones, namely (2E)-3-(2-fluoro-4-phenoxyphenyl)-1-phenylprop-2-en-1-one, C21H15FO2, (I), (2E)-3-(2-fluoro-4-phenoxyphenyl)-1-(4-fluorophenyl)prop-2-en-1-one, C21H14F2O2, (II), (2E)-1-(4-chlorophenyl)-3-(2-fluoro-4-phenoxyphenyl)prop-2-en-1-one, C21H14ClFO2, (III), (2E)-3-(2-fluoro-4-phenoxyphenyl)-1-(4-methylphenyl)prop-2-en-1-one, C22H17FO2, (IV), and (2E)-3-(2-fluoro-4-phenoxyphenyl)-1-(4-methoxyphenyl)prop-2-en-1-one, C22H17FO3, (V), the configuration of the keto group with respect to the olefinic double bond is s-cis. The molecules pack utilizing weak C-HO and C-H intermolecular contacts. Identical packing motifs involving C-HO interactions, forming both chains and dimers, along with C-H dimers and - aromatic interactions are observed in the fluoro, chloro and methyl derivatives.
Formula: C21H15FO2, C21H14F2O2, C21H14ClFO2, C22H17FO2 and C22H17FO3
Structure factor file (CIF format) (154.8 kbytes)
Structure factor file (CIF format) (158.1 kbytes)
Structure factor file (CIF format) (153.9 kbytes)
Structure factor file (CIF format) (167.0 kbytes)
Structure factor file (CIF format) (164.2 kbytes)
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