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3-Benzoylcoumarine C16H10O3, Mr = 250. 26, monpclinic, space group P21/n, a =11. 744(1), 6 = 16.837(2), c=12. 525(2)A , β= 100. 00(1)°, Z = 8, Dc =1. 363g/cm3, Do = 1. 382g/cm3, F( 000) = 1040, μ(MoKa) = 0. 880cm-1. R and Rw were 0. 048 and 0. 049, respectively, for 2490 observed reflections. X-ray structural analysis reveals that the title compound contains 3 planes intersecting each other with different dihedral angles and thus the whole molecule displays non-planar configuration. This result is consistant with the previous conclusion from photochemical study.
3-Benzoylcoumarine C16H10O3, Mr = 250. 26, monpclinic, space group P21 / n, a = 11.744 (1), 6 = 16.837 (2), c = 880cm-1. R and Rw were 0. 048 (1) °, Z = 8, Dc = 1. 363g / cm3 Do = 1. 382g / cm3 F (000) = 1040, and 0. 049, respectively, for 2490 observed reflections. X-ray structural analysis reveals that the title compound contains 3 planes intersecting each other with different dihedral angles and thus the whole molecule displays non-planar configuration. This result is consistant with the previous conclusion from photochemical study.