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Chemistry, an Asian journal

Tris(spiroborate)-type anionic nanocycles.


PMID 22488886

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.