Synthesis and Crystal Structure of 3,3＇-（4-Dimethylaminobenzylidene）- bis-（4-hydroxycoumarin）

摘要

The title compound 3,3＇-（4-dimethylaminobenzylidene）-bis-（4-hydroxycoumarin） 3 was synthesized by the reaction of 4-hydroxycoumarin with 4-dimethylaminobenzaldehyde, and its chemical structure was determined by X-ray single-crystal diffraction. It crystallizes in monoclinic, space group P21 with a = 11.698（2）, b = 10.882（2）, c = 16.594（3） A, β = 90.69（3）°, V = 2112.1（7） A3, Z = 4, F（000） = 952, Dc = 1.432 Mg/m3, Mr = 455.45,μ= 0.102 mm-1, 2 = 0.71073 A, the final R = 0.0779 and wR = 0.2143 for 3031 observed reflections with I 〉 2σ（I）.