title: Non-covalent interactions exert extraordinary influence over conformation and properties of a well-known supramolecular building block.
abstract: At low pH, and in the presence of 4,4'-bipyridine, p-sulfonatocalix[4]arene crystallizes in the 1,3-alternate conformation rather than the expected cone conformation and exhibits remarkable stability.
authors.affiliation: Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA.
authors.forename: L J
authors.initials: LJ
authors.lastname: Barbour
authors.forename: J L
authors.initials: JL
authors.lastname: Atwood