Effects of structural order on magnetic properties of <i>S</i> = 1 [Ni(HF<sub>2</sub>)(pyz)<sub>2</sub>]PF<sub>6 </sub>(pyz = pyrazine)

POSTER

Abstract

We have discovered a third polymorph in the [Ni(HF2)(pyz)2]PF6 family of coordination polymers. As compared to the previously published structures that possess structurally ordered frameworks1, a new example features a disordered, monoclinic unit cell. This new variant allows us to examine the effects of structural order and disorder on superexchange pathways, specifically along the Ni-FHF-Ni and Ni-pyz-Ni directions. We consider the local distortions to the Ni(II) coordination sphere and the geometries afforded by the ligands. This presentation will address the possible discrepancies in magnetic properties for these polymorphs as gleaned by examination of their structures.

1Manson, et al. Inorg. Chem. 50, 5990 (2011)

*NSF DMR-1703003 (EWU), DMR-1157490 (MagLab), DoE, FL, ERC, EPSRC

Presenters

  • Ashley Glover

    • Chemistry, Eastern Washington University

Authors

  • Ashley Glover

    • Chemistry, Eastern Washington University

  • Jamie Manson

    • Chemistry, Eastern Washington University
    • Dept. of Chemistry and Biochemistry, Eastern Washington University
    • Eastern Washington University
    • Department of Chemistry and Biochemistry, Eastern Washington University

  • Sam Curley

    • Physics, University of Warwick
    • Warwick University

  • Robert Williams

    • Physics, University of Warwick

  • Paul Goddard

    • Physics, University of Warwick
    • Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
    • Warwick University
    • Department of Physics, University of Warwick

  • John Singleton

    • National High Magnetic Field Laboratory, Los Alamos National Laboratory
    • MPA-MAG, Los Alamos National Laboratory
    • National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM 87545
    • Los Alamos National Laboratory
    • NHMFL, Los Alamos National Labs
    • NHMFL, Los Alamos National Laboratory
    • Los Alamos, National High Magnetic Field Laboratory
    • NHMFL, Los Alamos Natl Lab
    • Los Alamos Natl Lab

  • Saul H. Lapidus

    • Advanced Photon Source, Argonne National Laboratory
    • X-ray Science Division, Argonne National Laboratory
    • Advanced Photon Source, Argonne Natl Lab

  • Roger Johnson

    • University of Oxford
    • ISIS Pulsed Neutron Source, Rutherford Appleton Laboratory
    • Clarendon Laboratory, University of Oxford
    • Department of Physics, University of Oxford
    • Physics, University of Oxford

  • Pascal Manuel

    • ISIS Pulsed Neutron Source, Rutherford Appleton Laboratory
    • ISIS Facility, STFC

  • Wei Zhou

    • National Institute of Standards and Technology, NIST Center for Neutron Research

  • Jesper Bendix

    • University of Copenhagen, Chemistry