title: Cofacial porphyrin-ferrocene dyads and a new class of conjugated porphyrin.
abstract: A porphyrin-ferrocene dyad has been synthesized in which there is close face-to-face contact between the two aromatic systems, providing a model for heterobimetallic polymers based on the same repeating unit. Attempts to synthesize the 2:1 adduct instead led to a remarkable intramolecular Heck-type cyclization which planarizes the system and extends the conjugation. [structure: see text]
authors.affiliation: Wolfson Materials and Catalysis Centre, School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich NR4 7TJ, U.K.
authors.forename: Andrew N
authors.initials: AN
authors.lastname: Cammidge
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Scaife
authors.forename: Gûlen
authors.initials: G
authors.lastname: Berber
authors.forename: David L
authors.initials: DL
authors.lastname: Hughes