Porphyrazines as molecular scaffolds: flexible syntheses of novel multimetallic complexes |
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Authors: | Goslinski Tomasz Zhong Chang Fuchter Matthew J Stern Charlotte L White Andrew J P Barrett Anthony G M Hoffman Brian M |
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Institution: | Department of Chemistry, Imperial College, London SW7 2AZ, England. |
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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. |
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