期刊
TETRAHEDRON LETTERS
卷 46, 期 39, 页码 6687-6690出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2005.07.144
关键词
C-H center dot center dot center dot pi interaction; azacalixarene; host-guest chemistry; proton transfer
The molecular packing modes of DMF inclusion complexes of three homoazacalix[4]arenes were significantly changed by altering the substituents on the azacalixarene skeleton. As for N-methyl-p-tert-butyl-homoazacalix[4]arene, one of the phenolic OH protons transferred to the nitrogen atom was being accompanied by the inclusion of a DMF molecule. The DMF molecule in the cavity of each azacalixarenes is stabilized by C-H-... pi interaction. (c) 2005 Elsevier Ltd. All rights reserved.
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