CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, vol.29, no.5, pp.700-705, 2010 (SCI-Expanded)
The title compounds were synthesized and characterized by IR, H-1-NMR, Mass and elementary analysis and single-crystal X-ray diffraction. In 1a, intermolecular C-H center dot center dot center dot pi interactions produce a three-dimensional network. In 1b, intermolecular C-H center dot center dot center dot O hydrogen bonds generate an R-2(2)(22) ring. The hydrogen bonding is supported by C-H center dot center dot center dot pi interactions.