title: A cationic guest in a 24+ cationic host.
abstract: A new tetrahedral coordination cage M12L6 was prepared from a linear dipyrimidine ligand (L) and cis-protected palladium(II) (M). This cage showed unprecedented host-guest chemistry where the cationic host accommodated a cationic guest despite 24+ charges on the host framework. The unusual cation-cation host-guest chemistry is described by a unique onionlike shell structure of the host-guest complex where two cationic spheres are mediated by an anionic sphere of a counteranion assembly.
authors.affiliation: Department of Applied Chemistry, School of Engineering, The University of Tokyo, CREST, Japan Science and Technology Corporation (JST), 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
authors.forename: Jean-Pascal
authors.initials: JP
authors.lastname: Bourgeois
authors.forename: Makoto
authors.initials: M
authors.lastname: Fujita
authors.forename: Masaki
authors.initials: M
authors.lastname: Kawano
authors.forename: Shigeru
authors.initials: S
authors.lastname: Sakamoto
authors.forename: Kentaro
authors.initials: K
authors.lastname: Yamaguchi