(2S*,4R*)-2-exo-(1-Naphthyl)-2,3,4,5-tetrahydro-1H-1,4-epoxy-1-benzazepine, C20H17NO, (I), crystallizes with Z′ = 2 in the space group P21; the two independent molecules have the same absolute configuration, although this configuration is indeterminate. The molecules of each type are linked by a combination of C—H⋯O and C—H⋯π(arene) hydrogen bonds to form two independent sheets, each containing only one type of molecule. (2SR,4RS)-7-Methyl-2-exo-(1-naphthyl)-2,3,4,5-tetrahydro-1H-1,4-epoxy-1-benzazepine, C21H19NO, (II), crystallizes as a true racemate in the space group P21/c, and a combination of C—H⋯N, C—H⋯O and C—H⋯π(arene) hydrogen bonds links the molecules into sheets, each containing equal numbers of the two enantiomorphs. (2S*,4R*)-2-exo-(1-Naphthyl)-7-trifluoromethyl-2,3,4,5-tetrahydro-1H-1,4-epoxy-1-benzazepine, C21H16F3NO2, (III), crystallizes as a single enantiomorph, as for (I), but now with Z′ = 1 in the space group P212121; again, the absolute configuration is indeterminate. A single C—H⋯π(arene) hydrogen bond links the molecules of (III) into simple chains. (2S,4R)-8-Chloro-9-methyl-2-exo-(1-naphthyl)-2,3,4,5-tetrahydro-1H-1,4-epoxy-1-benzazepine, C21H18ClNO, (IV), crystallizes as a single enantiomorph of well defined configuration, in the space group P212121, where two independent C—H⋯π(arene) hydrogen bonds link the molecules into a single three-dimensional framework structure.
Tópico:
Crystal structures of chemical compounds
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FuenteActa Crystallographica Section C Crystal Structure Communications
