Korean Journal of Crystallography (한국결정학회지)
- Volume 10 Issue 1
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- Pages.66-70
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- 1999
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- 1229-8700(pISSN)
N-Tosyl Calix[4]arene Azacrown Ether, $C_{45}H_{49}NO_6S$
- Kim, Jong-Seung (Department of Chemistry, Konyang University, Nonsan, Chungnam) ;
- Kim, Moon-Jib (Department of Physics, Soonchunghyang University, Onyang) ;
- Choo, Geum-Hong (Department of Liberal Arts and Education, Korea University of Technology and Education, Cheonan City, Choongchungnam-Do) ;
- Lee, Jin-Ho (Neutron Physics Department, Korea Atomic Energy Research Institute, Taejon) ;
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Suh, Il-Hwan
(Department of Physics Chungnam National University, Taejon)
- Published : 1999.06.01
Abstract
The calix[4]arene molecule adopting the 1,3-alternate conformation forms a square cavity, and two pair phenyl rings lying above and below a least-square plane defined by the four bridging methylene groups in the calix[4]arene are widened upwards and downwards, respectively, from central axis, which leads to O1-O4=4.064 and O2-O3=3.864 . Two propyloxy groups are stabilized with all trans conformations, but the rather short azacrown ether chain with two oxygen atoms includes cis/trans conformations with O1-C35=2.906 . Therefore the cavity does not seem to be big enough to form a host-guest complex.
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