Premium
Perovskites with the Framework‐Forming Xenon
Author(s) -
Britvin Sergey N.,
Kashtanov Sergei A.,
Krzhizhanovskaya Maria G.,
Gurinov Andrey A.,
Glumov Oleg V.,
Strekopytov Stanislav,
Kretser Yury L.,
Zaitsev Anatoly N.,
Chukanov Nikita V.,
Krivovichev Sergey V.
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201506690
Subject(s) - xenon , perovskite (structure) , octahedron , noble gas , ionic radius , sequence (biology) , chemistry , atmosphere (unit) , group (periodic table) , ionic bonding , crystallography , chemical physics , ion , crystal structure , physics , thermodynamics , organic chemistry , biochemistry
The Group 18 elements (noble gases) were the last ones in the periodic system to have not been encountered in perovskite structures. We herein report the synthesis of a new group of double perovskites KM(XeNaO 6 ) (M=Ca, Sr, Ba) containing framework‐forming xenon. The structures of the new compounds, like other double perovskites, are built up of the alternating sequence of corner‐sharing (XeO 6 ) and (NaO 6 ) octahedra arranged in a three‐dimensional rocksalt order. The fact that xenon can be incorporated into the perovskite structure provides new insights into the problem of Xe depletion in the atmosphere. Since octahedrally coordinated Xe VIII and Si IV exhibit close values of ionic radii (0.48 and 0.40 Å, respectively), one could assume that Xe VIII can be incorporated into hyperbaric frameworks such as MgSiO 3 perovskite. The ability of Xe to form stable inorganic frameworks can further extend the rich and still enigmatic chemistry of this noble gas.