Several new 4’-O-substituted derivatives of 3,4,5-trimethoxy-4’-hydroxystilbene were synthesized and characterized by their IR and NMR spectra. The crystal structure of ethyl 4-[(E)-2-(3,4,5-trimethoxyphenyl) vinyl]phenoxy}acetate, one of these stilbene derivatives, has been solved by singlecrystal X-ray structure analysis. The results show that all carbon and oxygen atoms in the molecule are nearly coplanar except C(16), and molecules stack to a column arrangement owing to C-H···π interactions. Pairs of these columns are linked by other molecules, and these linker molecules themselves also produce a column along the other direction. A puckered cyclic tetramer R4
4 (46) is formed and the tetramer propagates itself via intermolecular hydrogen bonds and C-H···π interactions. In this way, molecules are interrelated and assembled to a two-dimensional layer structure.
合成并表征了几种新的3,4,5-三甲氧基-4'-羟基亚苄基衍生物的4'-O取代衍生物,通过它们的红外和核磁共振光谱进行了表征。其中一种亚苄基衍生物乙酸乙酯4-[(E)-2-(3,4,5-三甲氧基苯基)乙烯基]苯氧基}的晶体结构已通过单晶X射线结构分析得到。结果表明,分子中的所有碳和氧原子都几乎共面,除了C(16),由于C-H···π相互作用,分子堆积成柱状排列。这些柱状体成对连接,连接分子本身也沿另一方向形成柱状体。通过分子间氢键和C-H···π相互作用,形成呈褶曲状的环状四聚体R4 4 (46) ,四聚体沿着自身传播。通过这种方式,分子相互关联并组装成二维层状结构。