title: Unusually stable molecular capsule formation of a tetraphenyleneurea cavitand.
abstract: An unusually stable molecular capsule was formed by heating phenyleneurea-spanned resorcinarene cavitand with 4-methyl-N-p-tolylbenzamide. The molecular capsule behaved as a discrete molecular entity showing a cylindrical D(4d) structure and showed no guest exchange in toluene-d(8) even at 100 degrees C. [structure: see text]
authors.affiliation: Department of Applied Chemistry, Kyungpook National University, Daegu 702-701, Korea. choihj@knu.ac.kr
authors.forename: Heung-Jin
authors.initials: HJ
authors.lastname: Choi
authors.forename: Yeon Sil
authors.initials: YS
authors.lastname: Park
authors.forename: Chan Sik
authors.initials: CS
authors.lastname: Cho
authors.forename: Kwangnak
authors.initials: K
authors.lastname: Koh
authors.forename: Sung-Hong
authors.initials: SH
authors.lastname: Kim
authors.forename: Kyungsoo
authors.initials: K
authors.lastname: Paek