Structural study of three o-hydroxyacetophenone derivatives using X-ray powder diffraction: interplay of weak intermolecular interactions
作者:Basab Chattopadhyay、Soumen Ghosh、Swastik Mondal、Monika Mukherjee、Alok K. Mukherjee
DOI:10.1039/c1ce05920c
日期:——
plots, facilitating a comparison of intermolecular interactions. The DFT optimized molecular geometries in 1 and 3 agree closely with those obtained from the crystallographic studies. In 2, however, the relative orientation of the two planar phenyl rings as established by the X-ray analysis and quantum mechanical calculations differs by 34.9°. The crystal packing in the compounds is stabilized by an
三种邻羟基苯乙酮衍生物的家族, 2-羟基-5-甲氧基-4-甲基苯乙酮(1),5-甲氧基-4-甲基-2-(苯甲氧基)苯乙酮合成了(2)和2-O-(α-甲基碳乙氧基)-5-甲氧基-4-甲基-苯乙酮(3),并使用实验室X射线粉末衍射数据以及对它们的详细分析,解析了它们的晶体结构。 Hirshfeld表面和2D指纹图,有助于比较分子间的相互作用。DFT优化的分子几何结构1和3与从晶体学研究中获得的结果非常吻合。在2然而,通过X射线分析和量子力学计算确定的两个平面苯环的相对取向相差34.9°。化合物中的晶体堆积通过弱氢键(如C–H⋯O,C–H⋯π和π⋯π相互作用)的相互作用而稳定,形成超分子组装。1-3中的分子间C–H⋯O氢键生成C 1 1(6)链和R m n(X)环,它们通过C–H⋯π氢键和π⋯π相互作用进一步连接以产生平行由稠合的R 2 2(24)环在1中构建的分子片,具有C 2 2(16)[R