Crystallographic and magnetic data for the complexes in the paper entitled "Pressure induced enhancement of the magnetic ordering temperature in rhenium(IV) monomers" published in Nature Communications, 2016, 7, 13870. doi:10.1038/ncomms13870

Materials that demonstrate long range magnetic order are synonomous with information storage and the electronics industry, with the phenomenon commonly associated with metals, metal alloys or metal oxides and sulfides. A lesser know 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. Herein we report the effect of pressure on two such mononuclear ReIV 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.