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‘Impossible’ Sodium Chlorides Challenge Foundation of Chemistry
- anigbrowl 13y agoThis 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?
- kseistrup 13y agoThe 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.
- gus_massa 13y agoMore information (easy version): http://www.rsc.org/chemistryworld/2013/12/new-sodium-chlorides-assault-chemical-rules http://www.rsc.org/chemistryworld/2013/12/new-sodium-chlorid... Arxiv version: http://arxiv.org/abs/1310.7674 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.