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

60 Citations (Scopus)

Abstract

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 lanthanides 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
Volume43
Issue number20
DOIs
Publication statusPublished - 1 Oct 2004
Externally publishedYes

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