Acta Cryst. (2005). C61, o731-o734 [doi:10.1107/S0108270105037066]
Abstract: The title compounds, C20H21F2NO3 and C21H23F2NO3, respectively, belong to a class of 1,4-dihydropyridines whose members sometimes display calcium modulatory properties. The 1,4-dihydropyridine rings have the usual shallow boat conformation. In each structure, the 2,3-difluorophenyl ring is oriented such that the fluoro substituents are in a synperiplanar orientation with respect to the 1,4-dihydropyridine ring plane and the oxocyclohexene ring has a slightly distorted envelope conformation. Both structures exhibit the same intermolecular N-H
O hydrogen-bonding motif, in which the molecules are linked into chains by interactions involving the carbonyl O atom of the oxocyclohexene ring.
Formula: C20H21F2NO3 and C21H23F2NO3
 |   Structure factor file (CIF format) (244.0 kbytes) |
| Structure factor file (CIF format) (263.0 kbytes) |
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