Open AccessA little bit of lithium does a lot for hydrogen
Author(s) -
Eva Zurek,
Roald Hoffmann,
N. W. Ashcroft,
Artem R. Oganov,
Andriy O. Lyakhov
Publication year - 2009
Publication title -
proceedings of the national academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.0908262106
Subject(s) - lithium (medication) , hydrogen , stoichiometry , metal , electronic structure , bit (key) , chemistry , materials science , inorganic chemistry , chemical physics , thermodynamics , computational chemistry , computer science , physics , organic chemistry , computer security , psychology , psychiatry
From detailed assessments of electronic structure, we find that a combination of significantly quantal elements, six of seven atoms being hydrogen, becomes a stable metal at a pressure approximately 1/4 of that required to metalize pure hydrogen itself. The system, LiH(6) (and other LiH(n)), may well have extensions beyond the constituent lithium. These hypothetical materials demonstrate that nontraditional stoichiometries can considerably expand the view of chemical combination under moderate pressure.
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