Synthesis of a new vdW compound (Xe)(Cl2) and ionic XeCl2 under pressure
Abstract
A number of xenon compounds have been synthesized at high pressure-high temperature conditions recently. Most of them have been shown to be molecular, van der Waals compounds. Recently, it has been shown that in the case of Xe-O system, pressure induces changes in the xenon valence state thereby confirming the hypothesis that pressur induces hyper-valency in xenon compounds. Indeed, this causes XeF2 to transition to XeF4, XeF6 and ultimately to XeF8. In the Xe-Cl2 system, we observe the formation of a vdW compound that can be transformed to a non-molecular compound at higher pressures and under laser heating. Using a combination of XANES and XRD at 16-BM-D of HPCAT, we have experimental evidence of valence changes that manifest in huge Raman intensities in the vdW compound.
This work was supported by CDAC (DE-NA-00006). HPCAT is supported by DOE-NNSA, DOE-BES and NSF.- Publication:
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APS March Meeting Abstracts
- Pub Date:
- March 2017
- Bibcode:
- 2017APS..MARE35001S