Solid-state Structures for 2-Methoxy-1,3-xylyl-18-crown-5 and 2-Methoxy-1, 3-xylyl-21-crown-6: A Search for C–H···O Interactions

被引：0

作者：

Richard A. Bartsch

N. Kent Dalley

John F. Cannon

Uriel Olsher

机构：

[1] Texas Tech University,Department of Chemistry and Biochemistry

[2] Brigham Young University,Department of Chemistry and Biochemistry

[3] Tel-Aviv University,Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences

来源：

Journal of Inclusion Phenomena and Macrocyclic Chemistry | 2007年 / 58卷

关键词：

crown ether; intraannular substituent interaction; C–H···O interaction; solid-state structure;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Solid-state structures have been determined for 2-methoxy-1,3-xylyl-18-crown-5 (4) (monoclinic, P21/n, a = 11.361(3) Å, b = 8.352(3) Å, c = 18.627(4) Å, β = 91.05(2)°, Z = 4) and 2-methoxy-1,3-xylyl-21-crown-6 (5) (monoclinic, Pc, a = 9.996(2) Å, b = 11.321(2) Å, c = 8.642(2) Å, β = 100.095(4)o, Z = 2). In both molecules, the aromatic units are tilted with respect to the polyether ring and the methoxyl methyl hydrogens are oriented toward ether oxygen atoms of the rings. The interatomic distances, particularly the H···O distance and angles provide important information regarding the strength of the C–H···O interactions.

引用

页码：237 / 240

页数：3

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