title: N-methylation of macrobicycles reduces encapsulation ability.
abstract: N-methylation alters the conformation of octa-azacryptands leaving them unable to use all potential N-donors to coordinate copper(II) and anionic guests. This restriction, in the presence of other donors, normally results in exogenous coordination, with the exception of carbonate complexes, where two O-donors from the bridging anion along with three N-donors from the cryptand serve, in this series uniquely, to retain a pair of copper(II) ions within the "basket-shaped" cavity.
authors.affiliation: Chemistry Department, Loughborough University, Loughborough, UKLE11 3TU.
authors.forename: Sofia
authors.initials: S
authors.lastname: Derossi
authors.forename: David T
authors.initials: DT
authors.lastname: Farrell
authors.forename: Charles J
authors.initials: CJ
authors.lastname: Harding
authors.forename: Vickie
authors.initials: V
authors.lastname: McKee
authors.forename: Jane
authors.initials: J
authors.lastname: Nelson