Stable metallic behavior and antiferromagnetic ordering of Fe(III) d spins in (EDO-TTFVO)2.FeCl4

J Am Chem Soc. 2005 Oct 19;127(41):14166-7. doi: 10.1021/ja055263d.

Abstract

We report the crystal structure and physical properties of the 2:1 FeCl4- salt of a new donor molecule, EDO-TTFVO. Crystal structure analysis of this salt revealed that the donor molecules formed a beta' '-type two-dimensional conducting layer, and there is a short S...Cl contact between the donor molecules and the FeCl4- ions, which is expected to mediate a strong pi-d interaction. This salt showed a stable metallic conducting behavior down to 0.3 K and an antiferromagnetic ordering at TN approximately 3.0 K, indicating that this salt becomes a new antiferromagnetic molecular metal at ambient pressure. The appearance of the magnetic ordering is considered to originate from the strong pi-d interactions between the donor molecules and the FeCl4- ions because the field dependence of magnetoresistances was remarkably affected below the antiferromagnetic transition temperature.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallography, X-Ray
  • Ferric Compounds / chemistry*
  • Heterocyclic Compounds, 2-Ring / chemistry*
  • Magnetics*
  • Models, Molecular
  • Molecular Structure
  • Organometallic Compounds / chemistry*
  • Quinones / chemistry*
  • Temperature

Substances

  • Ferric Compounds
  • Heterocyclic Compounds, 2-Ring
  • Organometallic Compounds
  • Quinones
  • ethylenedioxyotetrathiafulvalenoquinone-1,3-dithiolemethide
  • ethylenedithiotetrathiafulvalenoquinone-1,3-dithiolemethide