title: Metal-directed ring-expansion in Schiff-base polypyrrolic macrocycles.
abstract: The reaction between a [2+2] Schiff-base porphyrin analogue and zinc acetate results in the unusual formation of an enlarged [3+3] macrocycle that is stabilised by metal coordination and intramolecular hydrogen-bonding interactions.
authors.affiliation: School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
authors.forename: Gonzalo
authors.initials: G
authors.lastname: Givaja
authors.forename: Alexander J
authors.initials: AJ
authors.lastname: Blake
authors.forename: Claire
authors.initials: C
authors.lastname: Wilson
authors.forename: Martin
authors.initials: M
authors.lastname: Schröder
authors.forename: Jason B
authors.initials: JB
authors.lastname: Love