title: 2,9,16,19,22,25-Hexaoxatetra-cyclo-[24.4.0.2.0]dotriaconta-1(26),4,6,10(15),11,13,27,29,31-nona-ene.
abstract: The title 22-crown-6 unit, C(26)H(28)O(6), comprising of three benzo groups and triethyl-ene glycol, was prepared by the reaction of α,α'-dibromo-p-xylene with 1,8-bis-(2-hydroxy-phen-oxy)-3,6-dioxaoctane in the presence of Cs(2)CO(3) with tetra-hydro-furan (THF) and recrystallized from dichloro-methane-hexane (1:20 v/v) at room temperature. In the mol-ecular structure, two O atoms of the central ethyl-ene glycol in the triethyl-ene glycol unit exhibit exo conformations due to intra-molecular C-H⋯O inter-actions. A number of C-H⋯O and C-H⋯π inter-molecular inter-actions contribute to the stabilization of the crystal packing.
authors.forename: Jai Young
authors.initials: JY
authors.lastname: Lee
authors.forename: Ji-Eun
authors.initials: JE
authors.lastname: Lee
authors.forename: Wonbo
authors.initials: W
authors.lastname: Sim
authors.forename: Ki-Min
authors.initials: KM
authors.lastname: Park