Limits...
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.

Lee JY, Lee JE, Sim W, Park KM - Acta Crystallogr Sect E Struct Rep Online (2009)

Bottom Line: 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.

View Article: PubMed Central - HTML - PubMed

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.

No MeSH data available.


Related in: MedlinePlus

Intermolecular C—H···π (red dotted lines) and C—H···O (yellow dotted lines) interactions in the title compound. All H atoms except those related to intermolecular interactions have been omitted for clarity. Cg1, Cg2 and Cg3 denote the centroids of rings consisting of C1/C2/C3/C4/C5/C6, C13/C14/C15/C16/C17/C18 and C20/C21/C22/C23/C24/C25, respectively. [Symmetry codes: (i) x, -y + 1/2, z + 1/2; (ii) -x, -y, -z + 2; (iii) -x, -y, -z + 1]
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC2970268&req=5

Fap2: Intermolecular C—H···π (red dotted lines) and C—H···O (yellow dotted lines) interactions in the title compound. All H atoms except those related to intermolecular interactions have been omitted for clarity. Cg1, Cg2 and Cg3 denote the centroids of rings consisting of C1/C2/C3/C4/C5/C6, C13/C14/C15/C16/C17/C18 and C20/C21/C22/C23/C24/C25, respectively. [Symmetry codes: (i) x, -y + 1/2, z + 1/2; (ii) -x, -y, -z + 2; (iii) -x, -y, -z + 1]


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.

Lee JY, Lee JE, Sim W, Park KM - Acta Crystallogr Sect E Struct Rep Online (2009)

Intermolecular C—H···π (red dotted lines) and C—H···O (yellow dotted lines) interactions in the title compound. All H atoms except those related to intermolecular interactions have been omitted for clarity. Cg1, Cg2 and Cg3 denote the centroids of rings consisting of C1/C2/C3/C4/C5/C6, C13/C14/C15/C16/C17/C18 and C20/C21/C22/C23/C24/C25, respectively. [Symmetry codes: (i) x, -y + 1/2, z + 1/2; (ii) -x, -y, -z + 2; (iii) -x, -y, -z + 1]
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2970268&req=5

Fap2: Intermolecular C—H···π (red dotted lines) and C—H···O (yellow dotted lines) interactions in the title compound. All H atoms except those related to intermolecular interactions have been omitted for clarity. Cg1, Cg2 and Cg3 denote the centroids of rings consisting of C1/C2/C3/C4/C5/C6, C13/C14/C15/C16/C17/C18 and C20/C21/C22/C23/C24/C25, respectively. [Symmetry codes: (i) x, -y + 1/2, z + 1/2; (ii) -x, -y, -z + 2; (iii) -x, -y, -z + 1]
Bottom Line: 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.

View Article: PubMed Central - HTML - PubMed

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.

No MeSH data available.


Related in: MedlinePlus