In situ cryocrystallisation in combination with a zone-melting technique enabled the crystal structure determination of a homologous series of low-melting n-alkyl methyl esters Cn−1H2n+1CO2CH3, from methyl pentanoate (n = 5) to methyl tridecanoate (n = 13), by single crystal X-ray diffraction. Two isostructural groups were identified: the odd-numbered triclinic members (C9,11,13) and the even-numbered
原位冷冻结晶与区域熔化技术相结合,能够确定由
戊酸甲酯(n = 5)形成的一系列同系低熔点正烷基甲基酯C n -1 H 2 n +1 CO 2 CH 3的晶体结构)通过单晶X射线衍射转化为
十三烷酸甲酯(n = 13)。两个同构组进行鉴定:奇数三斜晶系成员(C 9,11,13)和偶数斜方构件(C 8,10,12)。所有观察到的结构趋势,分子间接触的相似性和差异,包括在熔点行为和晶胞参数中可观察到的奇偶效应,都可以很容易地可视化,并通过从计算出的Hirshfeld表面与原子-原子结合生成的2D指纹图进行描述。库仑-伦敦-保利(
AA-CLP)晶格能量计算。