title: Tris(spiroborate)-type anionic nanocycles.
abstract: Full circle: New cyclic tris(spiroborate)s were prepared as molecular recognition modules for nanometer-sized cationic guests. These cyclophanes were simply prepared by treating corresponding bis(2,3-dihydroxynaphthalene)s with an equimolar amount of boric acid. The molecular recognition ability of these cyclic spiroborates was estimated in solution and crystal phases by the use of [Ir(tpy(2))](3+) as a typical example of a cationic guest.
authors.affiliation: Department of Chemistry, Faculty of Science and Engineering, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan. danjo@konan-u.ac.jp
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Danjo
authors.forename: Natsuyo
authors.initials: N
authors.lastname: Mitani
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Muraki
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Kawahata
authors.forename: Isao
authors.initials: I
authors.lastname: Azumaya
authors.forename: Kentaro
authors.initials: K
authors.lastname: Yamaguchi
authors.forename: Toshifumi
authors.initials: T
authors.lastname: Miyazawa
mesh_terms: D000838:Anions / Q000737:chemistry*; D001881:Borates / Q000138:chemical synthesis / Q000737:chemistry*; D003500:Cyclization; D008958:Models, Molecular; D009284:Naphthols / Q000138:chemical synthesis / Q000737:chemistry*; D013141:Spiro Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D000838:Anions; D001881:Borates; D009284:Naphthols; D013141:Spiro Compounds; C053499:2,3-dihydroxynaphthalene