title: Closed and open clamlike structures formed by hydrogen-bonded pairs of cyclotricatechylene anions that contain cationic "meat".
abstract: Clamming up: The hexaphenolic compound cyclotricatechylene, which has a bowl-shaped cavity, forms clamlike pairs that encapsulate cations (see picture). Variable hydrogen bonding allows two linked cyclotricatechylene clamshells to be in a closed arrangement when smaller cations such Rb(+) or Cs(+) provide the clam meat, whereas larger cations such as NMe(4) (+) and NEt(4) (+) cause the clam to be partially opened.
authors.affiliation: School of Chemistry, University of Melbourne, Victoria, Australia.
authors.forename: Brendan F
authors.initials: BF
authors.lastname: Abrahams
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Fitzgerald
authors.forename: Timothy A
authors.initials: TA
authors.lastname: Hudson
authors.forename: Richard
authors.initials: R
authors.lastname: Robson
authors.forename: Tom
authors.initials: T
authors.lastname: Waters