title: Guest exchange in dimeric capsules of a tetraurea calix[4]arene in the solid state.
abstract: A solid powder of hydrogen bonded dimers of a tetraurea calix[4]arene is able to exchange the encapsulated guest in contact with the vapor of a second guest. The molecules of a guest-free powder obtained from a polar solvent cannot rearrange in the solid phase to form new guest-filled capsules under these conditions.
authors.affiliation: Institute of Chemistry, Kazan State University, Kremlevskaya 18, Kazan, 420008, Russia.
authors.forename: Marat A
authors.initials: MA
authors.lastname: Ziganshin
authors.forename: Ludmila S
authors.initials: LS
authors.lastname: Yakimova
authors.forename: Khasan R
authors.initials: KR
authors.lastname: Khayarov
authors.forename: Valery V
authors.initials: VV
authors.lastname: Gorbatchuk
authors.forename: Myroslav O
authors.initials: MO
authors.lastname: Vysotsky
authors.forename: Volker
authors.initials: V
authors.lastname: Böhmer
mesh_terms: D047250:Calixarenes / Q000737:chemistry*; D019281:Dimerization; D006860:Hydrogen Bonding; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D010636:Phenols / Q000737:chemistry*; D014508:Urea / Q000031:analogs & derivatives*
chemical_list: D010636:Phenols; C121325:calix(4)arene; D047250:Calixarenes; D014508:Urea