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Issue 14, 2000
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Difference in guest-inclusion abilities of anti- and syn-rotamers

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Abstract

Guest inclusion abilities of two rotamers, anti- and syn-N,N ′-bis-(2-tert-butylphenyl)naphthalene-1,4,5,8-tetracarboxylic diimides 1 and 2, were investigated. Rotamers 1 and 2 were synthesised from 2-tert-butylaniline and naphthalene-1,4,5,8-tetracarboxylic dianhydride and separated by conventional column chromatography on silica gel. Recrystallisation of 1 from chloroform in the presence of a guest molecule (3 mole equivalents) was performed, and 15 guest molecules were included with a variety of host∶guest ratios, 1∶1 (chloroform, pyridine, 4-picoline, benzene, quinoline, diphenylacetylene, naphthalene, and p-toluidine), 1∶2 (phenol, 3-ethylphenol, 4-methoxyphenol, indole, 5-methylindole, and tetrathiafulvalene), and 1∶4 (benzothiazole). In contrast, 2 showed no inclusion of guest molecules under the same conditions as those applied to 1. In order to investigate the intermolecular interaction in the crystalline state of 1, 2 and 1·(indole)2, X-ray diffraction of single crystals was measured and these structures were compared.

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Article information


Submitted
20 Mar 2000
Accepted
15 May 2000
First published
22 Jun 2000

J. Chem. Soc., Perkin Trans. 1, 2000, 2217-2221
Article type
Paper

Difference in guest-inclusion abilities of anti- and syn-rotamers

K. Kishikawa, C. Iwashima, S. Kohmoto, K. Yamaguchi and M. Yamamoto, J. Chem. Soc., Perkin Trans. 1, 2000, 2217
DOI: 10.1039/B002220I

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