Bilayers, corrugated bilayers, and coordination polymers of p-sulfonatocalix[6]arene

Scott J Dalgarno, Michaele J Hardie, Jerry L Atwood, Colin L Raston

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


Exploration into the host-guest supramolecular chemistry of p-sulfonatocalix[6]arene with pyridine N-oxide and 4,4'-dipyridine N,N'-dioxide has resulted in the characterization of three new structural motifs with the calixarene in the ``up-down'' double partial cone conformation. Two are hydrogen-bonded network structures formed with pyridine N-oxide and either nickel or lanthanide metal counterions (1 and 2, respectively). Complex 1 displays host-guest interactions between pyridine N-oxide and the calixarene in the presence of hexaaquanickel(II) counterions. Complex 2 demonstrates selective coordination modes for different lanthanices involving the calixarene and pyridine N-oxide. The third structure, 3, is a coordination polymer which is formed with 4,4'-dipyridine N,N'-dioxide molecules which span a hydrophilic layer and join lanthanide/p-sulfonatocalix[6]arene fragments. Although complexes 1-3 all have the calixarene in the ``up-down'' double partial cone conformation, 1 and 3 form bilayer arrangements within the extended structures while 2 forms a previously unseen corrugated bilayer arrangement.
Original languageEnglish
Pages (from-to)6351-6356
Number of pages6
JournalInorganic Chemistry
Issue number20
Publication statusPublished - 4 Oct 2004


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