CRYSTALLOGRAPHY REPORTS, vol.55, no.7, pp.1220-1222, 2010 (SCI-Expanded)
The title compound, C(29)H(23)NO(2), has been characterized by single-crystal X-ray diffraction at two different temperatures (303 K and 120 K) and wavelengths (MoK (alpha) and CuK (alpha)). The non-centrosymmetric hexagonal crystal structure contains four-membered planar beta-lactam ring with an unusually long C-C bond. The beta-lactam ring is almost planar.