作者:Yunping Zhoujin、Yuping Li、Peng-Yu Liang、Pan-Pan Zhou、Sean Parkin、Tonglei Li、Faquan Yu、Sihui Long
DOI:10.1021/acs.cgd.2c00773
日期:2022.10.5
(1–4) of fenamic acid have been synthesized by varying the length of the linker between the two aromatic rings, and their polymorphism has been investigated. Under the same crystallization conditions, each of the newly synthesized compounds leads to two forms, except for compound 1, which indicates that additional flexibility due to homologation does not necessarily lead to more polymorphs. The molecules
通过改变两个芳香环之间的接头长度,合成了一系列芬那酸的同系物(1-4) ,并对其多态性进行了研究。在相同的结晶条件下,除了化合物1之外,每种新合成的化合物都会产生两种形式,这表明同系化带来的额外灵活性并不一定会导致更多的多晶型物。由于围绕特定 sigma 键的旋转,每个多态系统中的分子显示出不同的构象。在每个系统的多晶型物之间观察到相变。应用构象分析和Hirshfeld表面分析来研究构象灵活性对这些化合物多态性的影响。