Pressure induced enhancement of the magnetic ordering temperature in rhenium(IV) monomers

DOI: 10.1038/ncomms13870

Authors: Christopher H. Woodall (The University of Edinburgh) , Gavin A. Craig (University of Glasgow) , Alessandro Prescimone (The University of Edinburgh) , Martin Misek (The University of Edinburgh) , Joan Cano (Universitat de València) , Juan Faus (Universitat de València) , Michael R. Probert (Newcastle University) , Simon Parsons (University of Edinburgh) , Stephen Moggach (The University of Edinburgh) , José Martínez-lillo (Universitat de València) , Mark Murrie (University of Glasgow) , Konstantin V. Kamenev (University of Edinburgh) , Euan K. Brechin (University of Edinburgh)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nature Communications , VOL 7

State: Published (Approved)
Published: December 2016
Diamond Proposal Number(s): 11879

Abstract: Materials that demonstrate long-range magnetic order are synonymous with information storage and the electronics industry, with the phenomenon commonly associated with metals, metal alloys or metal oxides and sulfides. A lesser known family of magnetically ordered complexes are the monometallic compounds of highly anisotropic d-block transition metals; the ‘transformation’ from isolated zero-dimensional molecule to ordered, spin-canted, three-dimensional lattice being the result of through-space interactions arising from the combination of large magnetic anisotropy and spin-delocalization from metal to ligand which induces important intermolecular contacts. Here we report the effect of pressure on two such mononuclear rhenium(IV) compounds that exhibit long-range magnetic order under ambient conditions via a spin canting mechanism, with Tc controlled by the strength of the intermolecular interactions. As these are determined by intermolecular distance, ‘squeezing’ the molecules closer together generates remarkable enhancements in ordering temperatures, with a linear dependence of Tc with pressure.

Journal Keywords: Chemistry; Coordination chemistry

Subject Areas: Materials, Chemistry


Instruments: I19-Small Molecule Single Crystal Diffraction

Documents:
ncomms13870.pdf