The thread thus far. The post about Na2He introduced the electride anionic counter-ion to Na+ as corresponding topologically to a rare feature known as a non-nuclear attractor. This prompted speculation about other systems with such a feature, and the focus shifted to a tetrahedral arrangement of four hydrogen atoms as a dication, sharing a total of two valence electrons. The story now continues here.
Posts Tagged ‘Electride’
More tetrahedral fun. Spherical aromaticity (and other oddities) in N4 and C4 systems?
Thursday, March 2nd, 2017Tags:chemical bonding, Chemistry, Electride, free energy, Interesting chemistry, Ion, Nature, Physical chemistry, Valence electron
Posted in Uncategorised | 1 Comment »
Na2He: a stable compound of helium and sodium at high pressure.
Saturday, February 11th, 2017On February 6th I was alerted to this intriguing article[1] by a phone call, made 55 minutes before the article embargo was due to be released. Gizmodo wanted to know if I could provide an (almost)† instant‡ quote. After a few days, this report of a stable compound of helium and sodium still seems impressive to me and I now impart a few more thoughts here.
References
- X. Dong, A.R. Oganov, A.F. Goncharov, E. Stavrou, S. Lobanov, G. Saleh, G. Qian, Q. Zhu, C. Gatti, V.L. Deringer, R. Dronskowski, X. Zhou, V.B. Prakapenka, Z. Konôpková, I.A. Popov, A.I. Boldyrev, and H. Wang, "A stable compound of helium and sodium at high pressure", Nature Chemistry, vol. 9, pp. 440-445, 2017. http://dx.doi.org/10.1038/nchem.2716
Tags:10.1038, Atom, Chemical elements, chemical phenomenon, Chemistry, Company: P. Acucar-CBD, Electride, Electron, Food Retail & Distribution - NEC, helium, Hydrogen, Interesting chemistry, Matter, Oxygen, Physics, social media
Posted in Bond slam, crystal_structure_mining | 11 Comments »