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‘Impossible’ Sodium Chlorides Challenge Foundation of Chemistry (sci-news.com)
6 points by mikro2nd on Dec 21, 2013 | hide | past | favorite | 3 comments


This is interesting. I'm not clear -are these novel compounds stable only at high pressure, or can they brought to ambient pressure and hold their form?


More information (easy version): http://www.rsc.org/chemistryworld/2013/12/new-sodium-chlorid...

Arxiv version: http://arxiv.org/abs/1310.7674

> The calculated phase diagram features unexpected compounds - NaCl3, stable above 20 GPa, NaCl7, stable above 142 GPa, and Na3Cl2, Na2Cl, and Na3Cl, which are stable above 120 GPa, 100 GPa and 77 GPa, respectively.

If I’m reading correctly, they are stable only under a lot of pressure.


The original article is protected by a paywall. However, the notice in SciNews reads: “These compounds are thermodynamically stable and, once made, remain indefinitely; nothing will make them fall apart.” I take this to include ambient temperature and pressure.




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