Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep34896
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Funding
- DOE Office of Science by Argonne National Laboratory [DE-AC02-06CH11357]
- U.K. EPSRC Leadership Fellowship [EP/J003999/1]
- EPSRC [EP/J003999/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1527188, EP/J003999/1] Funding Source: researchfish
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Molecular nitrogen exhibits one of the strongest known interatomic bonds, while xenon possesses a closed-shell electronic structure: a direct consequence of which renders both chemically unreactive. Through a series of optical spectroscopy and x-ray diffraction experiments, we demonstrate the formation of a novel van der Waals compound formed from binary Xe-N-2 mixtures at pressures as low as 5 GPa. At 300 K and 5 GPa Xe(N-2)(2)-I is synthesised, and if further compressed, undergoes a transition to a tetragonal Xe(N-2)(2)-II phase at 14 GPa; this phase appears to be unexpectedly stable at least up to 180 GPa even after heating to above 2000 K. Raman spectroscopy measurements indicate a distinct weakening of the intramolecular bond of the nitrogen molecule above 60 GPa, while transmission measurements in the visible and mid-infrared regime suggest the metallisation of the compound at similar to 100 GPa.
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