title: A binuclear Cu(II) metallacycle capable of discerning between pyrazine and its different methyl-substituted derivatives based on reversible intracage metal-ligand binding.
abstract: Squashy cage: A flexible, spongelike, and reversible metal-binding Cu(2)L(2) cage that can adjust its internal space in response to pyrazine and its derivatives based on a recognition sequence of pyrazine, 2,5-dimethylpyrazine, and 2-methylpyrazine (see figure) is described.
authors.affiliation: College of Chemistry, Chemical Engineering and Materials Science, Engineering Research Center of Pesticide and Medicine Intermediate Clean Production, Ministry of Education, Shandong Normal University, Jinan, 250014, PR China.
authors.forename: Gui-Ge
authors.initials: GG
authors.lastname: Hou
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Ma
authors.forename: Ting
authors.initials: T
authors.lastname: Sun
authors.forename: Yu-Bin
authors.initials: YB
authors.lastname: Dong
authors.forename: Ru-Qi
authors.initials: RQ
authors.lastname: Huang