Synthesis and magnetic properties comparison of M-Cu(II) and M-VO(II) Schiff base-porphyrazine complexes: What is the mechanism for spin-coupling?

Min Zhao, Chang Zhong, Charlotte Stern, Anthony G.M. Barrett*, Brian M Hoffman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

Dimetallic Schiff base-porphyrazine (pz) compounds, denoted 1[M 1; M2; R], have been prepared, where metal ion M 1 is incorporated into the pz core, and metal ion M2 is bound to a bis(5-tert-butylsalicylidenimine) chelate built onto two amino nitrogens attached to the pz periphery; R is a solubilizing group (either propyl (Pr) or 3,4,5-trimethoxyphenyl (TMP)) attached to the remaining carbons of the pz periphery. The synthesis of 1[Cu; Cu; R], 1[Cu; VO; R], 1[CIMn; Cu; Pr], and 1[CIMn; VO; Pr] is discussed, the crystal structures of 1[Cu; Cu; TMP] and 1[CIMn; VO; Pr] are presented, and the magnetic properties of these compounds are compared. The pattern of ligand-mediated exchange coupling in these complexes is startling: for the Cu-M2 complexes 1[Cu; VO; R] and 1[Cu; Cu; R], 2 × 102

Original languageEnglish (US)
Pages (from-to)9769-9775
Number of pages7
JournalJournal of the American Chemical Society
Volume127
Issue number27
DOIs
StatePublished - Jul 13 2005

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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