Both 10-(2-hydroxyethyl)acridin-9(10H)-one, C15H13NO2, and 10-(2-chloroethyl)acridin-9(10H)-one, C15H12ClNO, have monoclinic (P21/c) symmetry and supramolecular three-dimensional networks. But the differences in the intermolecular interactions displayed by the hydroxy group and the chlorine substituent lead to stronger intermolecular π-stacking interactions and hydrogen bonding, and hence a significantly higher melting point for the former.
10-(2-羟乙基)吖啶-9(10H)-酮(C15H13NO2)和10-(2-氯乙基)吖啶-9(10H)-酮(C15H12ClNO)都具有单斜(P21/c)对称性和超分子三维网络。但是,羟基和氯取代基所显示的分子间相互作用存在差异,导致分子间的π堆积相互作用和氢键作用更强,因此前者的熔点明显更高。