Jump to main content
Jump to site search

Issue 33, 2013
Previous Article Next Article

Synergy between polymorphism, pressure, spin-crossover and temperature in [Fe(PM-BiA)2(NCS)2]: a neutron powder diffraction investigation

Author affiliations

Abstract

The pressure dependencies of the lattice parameters of the spin transition compound [Fe(PM-BiA)2(NCS)2] have been derived from neutron powder diffraction measurements at low temperature. The study of the compound [Fe(PM-BiA)2(NCS)2]-pI has first confirmed the atypical spin crossover behaviour under pressure of this compound that shows a pressure induced structural transition inducing the transformation into a different polymorph, [Fe(PM-BiA)2(NCS)2]-pII. This phenomenon avoids a first-order spin transition in favour of continuous transition around 0.75 GPa at ambient temperature. Low temperature measurements under pressure up to 1.07 GPa allowed us not only to describe the spin-crossover for both polymorphs but also to reach phase-diagram regions where both polymorphs co-exist in different spin-states. Finally, the reversibility of the structural variations has been demonstrated.

Graphical abstract: Synergy between polymorphism, pressure, spin-crossover and temperature in [Fe(PM-BiA)2(NCS)2]: a neutron powder diffraction investigation

Back to tab navigation

Publication details

The article was received on 05 Apr 2013, accepted on 11 Jun 2013 and first published on 17 Jun 2013


Article type: Paper
DOI: 10.1039/C3CP51444G
Citation: Phys. Chem. Chem. Phys., 2013,15, 13872-13880

  •   Request permissions

    Synergy between polymorphism, pressure, spin-crossover and temperature in [Fe(PM-BiA)2(NCS)2]: a neutron powder diffraction investigation

    V. Legrand, S. Pechev, J. Létard and P. Guionneau, Phys. Chem. Chem. Phys., 2013, 15, 13872
    DOI: 10.1039/C3CP51444G

Search articles by author

Spotlight

Advertisements