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Evaluation of the Role of Isostructurality in Fluorinated Phenyl Benzoates
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2017-09-22 00:00:00 , DOI: 10.1021/acs.cgd.7b00421
Dhananjay Dey 1 , Deepak Chopra 1
Affiliation  

In this report, the occurrence of three-, two-, and one-dimensional (3D, 2D, and 1D) isostructurality in phenyl benzoate (D00) and their fluorinated analogues was investigated in terms of their molecular assembly in solid state structures. A one-dimensional C–H···O═C chain is observed as a robust motif (∼ −21 kJ/mol) in the formation of the supramolecular architectures in these isostructural compounds. The isomorphous crystal structures exhibit 3D isostructurality or vice versa. The crystal packing shows that weak intermolecular C–H···F, C–H···O, C–H···π interactions, and π···π stacking are the main contributors providing stability toward the crystal lattice. The nature and energetics of all the geometrically or energetically equivalent building blocks associated with similar or different intermolecular interactions delineate the role of different molecular pairs in the crystal structures. The fingerprint plots of the isostructural set of crystal structures help to understand the similarities and the differences in the various interatomic contacts. A comparison of these crystal structures with fluorinated N-phenyl benzamides shows the change in supramolecular assembly in terms of intermolecular interactions as well as the lattice energy due to the participation of a strong donor (N–H).

中文翻译:

评价同构性在氟化苯甲酸苯酯中的作用

在本报告中,对苯甲酸苯酯(D00)及其氟化类似物在固态结构中的分子组装进行了研究,研究了三维,二维和一维(3D,2D和1D)同构结构的发生。在这些同结构化合物的超分子结构的形成中,观察到一维C–H···O═C链是坚固的基序(〜-21 kJ / mol)。同构晶体结构表现出3D同构性,反之亦然。晶体堆积表明弱的分子间C–H···F,C–H···O,C–H···π相互作用以及π···π堆积是提供对晶格稳定性的主要因素。与相似或不同的分子间相互作用相关的所有几何上或能量上等效的构造块的性质和能量学描述了不同分子对在晶体结构中的作用。晶体结构的同构结构的指纹图有助于理解各种原子间接触的相似性和差异。这些晶体结构与氟化物的比较N-苯基苯甲酰胺在分子间相互作用以及超强供体(NH)的参与下的晶格能方面显示了超分子组装的变化。
更新日期:2017-09-23
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