There are two symmetry-independent mol-ecules in the asymmetric unit of the title compound, C(16)H(16)N(2)O, that differ in conformation. The dihedral angles between the benzene rings in the two mol-ecules are 44.35 (19) and 48.14 (17)°, but the rings twist in opposite directions. The acetamide groups make nearly equal dihedral angles of 25.4 (3) and 25.7 (3)° with the parent benzene rings. An S(6) ring motif is formed in each mol-ecule by intra-molecular C-H⋯O close contacts. In the crystal, strong N-H⋯O hydrogen bonds between acetamide groups generate a C(4) chain motif arranging the mol-ecules into two symmetry-independent polymeric structures extending along [010].
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3051704 | PMC |
http://dx.doi.org/10.1107/S1600536811001887 | DOI Listing |
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