Structural and magnetic properties of the binuclear [Co-2{(OPPh2)(2)N}(4)] complex: Ferromagnetic coupling between the two S=3/2 Co(II) ions

Eleftherios Ferentinos, Spyros D. Chatziefthimiou, Neil Robertson, Panayotis Kyritsis

Research output: Contribution to journalArticlepeer-review

Abstract

The reaction between Co(II) and the deprotonated tetraphenylimidodiphosphinic acid, [(OPPh2)(2)N](-), afforded a binuclear [Co-2{(OPPh2)(2)N}(4)] complex, as revealed by X-ray crystallography. The structure contains two monometallic biconnective I(OPPh2)2N]- ligands, with an averaged Co-O bond length of 2.008 angstrom. The other two [(OPPh2)(2)N](-) act as bimetallic triconnective ligands, forming two oxygen atom bridges, with the four Co-O(bridging) distances averaged at 2.155 angstrom, and the two Co-O(non-bridging) distances at 1.973 angstrom. The two approximately trigonal bipyramidal Co(II) ions are at a Co center dot center dot center dot Co distance of 3.301 angstrom. The analysis of the magnetic properties of [Co-2{(OPPh2)(2)N}(4)] is consistent with an unusual ferromagnetic interaction, in a binuclear Co(II) system, between the two S = 3/2 Co(II) ions. (C) 2009 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)615-618
Number of pages4
JournalInorganic chemistry communications
Volume12
Issue number7
DOIs
Publication statusPublished - Jul 2009

Keywords

  • Cobalt
  • Tetraphenylimidodiphosphinic acid
  • Binuclear complex
  • Ferromagnetic coupling
  • LUMINESCENT LANTHANIDE COMPLEXES
  • X-RAY-STRUCTURE
  • DICOBALT II-II
  • CRYSTAL-STRUCTURES
  • TETRAORGANODICHALCOGENOIMIDODIPHOSPHINATO-LIGANDS
  • COBALT(II) COMPLEXES
  • MOLECULAR-STRUCTURE
  • SPECTROSCOPIC CHARACTERIZATION
  • MANGANESE(II) COMPLEXES
  • DOT CH2CL2

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