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Radiation effects, zero thermal expansion, and pressure-induced phase transition in CsMnCo(CN)6

DOI: 10.1039/D2CP03754H DOI Help

Authors: Hanna Bostroem (Max Planck Institute for Solid State Research) , Andrew B. Cairns (Imperial College London) , Muzi Chen (Imperial College London) , Dominik Daisenberger (Diamond Light Source) , Christopher J. Ridley (ISIS Neutron and Muon Source) , Nicholas P. Funnell (ISIS Neutron and Muon Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Chemistry Chemical Physics

State: Published (Approved)
Published: October 2022
Diamond Proposal Number(s): 30164

Open Access Open Access

Abstract: The Prussian blue analogue CsMnCo(CN)6 is studied using powder X-ray and neutron diffraction under variable temperature, pressure, and X-ray dose. It retains the cubic $F\bar{4}3m$ symmetry in the range 85--500 K with minimal thermal expansion, whereas a phase transition to $P\bar{4}n2$ occurs at ∼2 GPa, driven by octahedral tilting. A small lattice contraction occurs upon increased X-ray exposure. Comparisons with related systems indicate that the CsI ions decrease the thermal expansion and suppresses the likelihood of phase transformation. The results increase the understanding of the stimuli-responsive behaviour of coordination polymers.

Subject Areas: Materials, Chemistry

Instruments: I11-High Resolution Powder Diffraction

Other Facilities: ISIS

Added On: 12/10/2022 13:23


Discipline Tags:

Physical Chemistry Chemistry Materials Science

Technical Tags:

Diffraction X-ray Powder Diffraction