Acta Cryst. (2013). C69, 448-452 [ doi:10.1107/S0108270113006458 ]
Abstract: (2RS,4SR)-7-Bromo-2-(2-methylphenyl)-2,3,4,5-tetrahydro-1H-naphtho[1,2-b]azepin-4-ol, C21H20BrNO, (I), and (2RS,4SR)-2-(3-methylthiophen-2-yl)-2,3,4,5-tetrahydro-1H-naphtho[1,2-b]azepin-4-ol, C19H19NOS, (II), both crystallize with Z' = 2 in the space groups P21/c and Cc, respectively; compound (II) crystallizes as a nonmerohedral twin, with twin fractions 0.183 (2) and 0.817 (2). The molecules of (I) are linked by O-HO and O-HN hydrogen bonds to form a cyclic centrosymmetric R44(16) tetramer. The molecules of (II) are linked by O-HO hydrogen bonds to form a C22(4) chain and these chains are weakly linked by a single C-H(thienyl) interaction to form a three-dimensional array. Comparisons are made with some related compounds.
Formula: C21H20BrNO and C19H19NOS
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