title: Porphyrazines as molecular scaffolds: flexible syntheses of novel multimetallic complexes.
abstract: Reductive deselenation of selenodiazole-fused porphyrazines, followed by acylation of the resultant labile porphyrazinediamines, was used to prepare macrocycles bearing two Collins ligands, two oxamido residues, or two quinoline-2-carboxamido units. Peripheral coordination of copper(II) to the di-(quinoline-2-carboxamido)-porphyrazine gave a metal-linked face-to-face porphyrazine dimer array. Sequential derivatization of the two amino groups in the porphyrazinediamines was used to prepare mixed peripheral ligand systems including a dimetallic picolinamido-Schiff base porphyrazine. Such systems exhibit strong metal-metal spin coupling and are anticipated to be of value in the synthesis of novel electronic and magnetic materials.
authors.affiliation: Department of Chemistry, Imperial College, London SW7 2AZ, England.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Goslinski
authors.forename: Chang
authors.initials: C
authors.lastname: Zhong
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Fuchter
authors.forename: Charlotte L
authors.initials: CL
authors.lastname: Stern
authors.forename: Andrew J P
authors.initials: AJ
authors.lastname: White
authors.forename: Anthony G M
authors.initials: AG
authors.lastname: Barrett
authors.forename: Brian M
authors.initials: BM
authors.lastname: Hoffman