Title
Molecular structures of two **E**-azobenzocrown ethers Molecular structures of two **E**-azobenzocrown ethers
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Amsterdam ,
Subject
Chemistry
Source (journal)
Journal of molecular structure. - Amsterdam
Volume/pages
892(2008) , p. 195-199
ISSN
0022-2860
ISI
000261711400032
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The structures of the E-isomers of two 13- and 16-membered azobenzocrown ethers (compounds 1 and 2) have been determined by single crystal X-ray crystallography. The crystals of the compounds are monoclinic. In the unit cells there are two independent molecules 1A and 1B or 2A and 2B. Both compounds display conformational flexibility of the oxyethylene chain. Comparison of the conformations of the free macrocycles with their metal complexes indicates that the conformational changes of the free molecules to adapt to the metal coordination are more pronounced for the larger homologue.
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