Spin frustration from cis -edge or -corner sharing metal-centered octahedra

Romain Gautier, Kengo Oka, Takumi Kihara, Nitesh Kumar, Athinarayanan Sundaresan, Masashi Tokunaga, Masaki Azuma, Kenneth R. Poeppelmeier

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Abstract

A new strategy using cis-edge or -corner sharing metal-centered octahedra is described which enables interesting frustrated spin lattices to be targeted. The examination of "CuV2" triangular motifs in the two new compounds [enH2]Cu(H2O)2[V2O 2F8] (1) and [Cu(H2O)(2,2′-bpy)] 2[V2O2F8] (2) (where enH2 = ethylenediammonium and 2,2′-bpy =2,2′-bipyridyl) reveals that the [VOF4]2- anions, which exhibit cis structure directing properties, lead to frustrated lattices owing to the competing ferro and antiferromagnetic interactions. There is direct coordination through two cis F- ligands (i.e., the F- ligand trans to O2- and one equatorial F- ligand) in both 1 and 2 owing to the significant π-bonding between the vanadium and the oxide ligand. We emphasize that most of triangular motifs reported in the literature are built of cis-edge or -corner sharing metal-centered octahedra, thus they can be used to target new materials exhibiting interesting magnetism such as spin frustration.

Original languageEnglish
Pages (from-to)19268-19274
Number of pages7
JournalJournal of the American Chemical Society
Volume135
Issue number51
DOIs
Publication statusPublished - Dec 26 2013

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ASJC Scopus subject areas

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

Cite this

Gautier, R., Oka, K., Kihara, T., Kumar, N., Sundaresan, A., Tokunaga, M., Azuma, M., & Poeppelmeier, K. R. (2013). Spin frustration from cis -edge or -corner sharing metal-centered octahedra. Journal of the American Chemical Society, 135(51), 19268-19274. https://doi.org/10.1021/ja409831h