Compounds N,N′-bis(9-cyclohexyl-9-xanthenyl)ethylenediamine and its thio derivative, N,N′-bis(9-cyclohexyl-9-thioxanthenyl)ethylenediamine, as potential hosts in the presence of xylenes and ethylbenzene: Conformational analyses and molecular modelling considerations
作者:Benita Barton、Ulrich Senekal、Eric C. Hosten
DOI:10.1016/j.tet.2019.04.065
日期:2019.6
Two novel crystalline compounds, N,N′-bis(9-cyclohexyl-9-xanthenyl)ethylenediamine (OED) and its thio derivative, N,N′-bis(9-cyclohexyl-9-thioxanthenyl)ethylenediamine (SED), were designed and synthesized in our laboratories, and assessed for their potential as host compounds for the four C8 aromatic compounds, namely o-, m- and p-xylene (o-Xy, m-Xy, p-Xy), and ethylbenzene (EB). Despite the only difference
两种新颖的结晶化合物N,N'-双(9-环己基-9-噻吨基)乙二胺(OED)及其硫代衍生物N,N'-双(9-环己基-9-噻吨基)乙二胺(SED)在我们的实验室中设计和合成,并评估了它们作为四种C8芳族化合物(邻-,间-和对-二甲苯(o -Xy,m -Xy,p-Xy)和乙苯(EB)。尽管两种化合物之间唯一的区别是它们的B环中的杂原子,但仍注意到了巨大的行为差异:只有OED在这些条件下显示出宿主行为,除了m -Xy以外,其余全部都被包容,而SED无法与四种有机化合物中的任何一种形成复合物溶剂。这些发现促使人们通过单晶衍射(SCXRD)分析和计算研究对OED和SED的构型进行了研究,结果令人惊讶。SCXRD还被用于分析与OED成功形成的三种络合物,而热分析(TA)有助于理解当混合宾客出现时OED的选择性行为。