Korean Journal of Crystallography (한국결정학회지)

Korean Crystallographic Association (한국결정학회)
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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) ;
  • Suh, Il-Hwan (Department of Physics Chungnam National University, Taejon)
  • Published : 1999.06.01
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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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