KNH2–KH: a metal amide–hydride solid solution

Antonio Santoru; Claudio Pistidda; Magnus H. Sørby; Michele R. Chierotti; Sebastiano Garroni; Eugenio Pinatel; Fahim Karimi; Hujun Cao; Nils Bergemann; Thi T. Le; Julián Puszkiel; Roberto Gobetto; Marcello Baricco; Bjørn C. Hauback; Thomas Klassen; Martin Dornheim

doi:10.1039/C6CC05777B

KNH₂–KH: a metal amide–hydride solid solution†

Antonio Santoru,

*^ab Claudio Pistidda,^a Magnus H. Sørby,^c Michele R. Chierotti,

^b Sebastiano Garroni,^d Eugenio Pinatel,^b Fahim Karimi,^a Hujun Cao,^a Nils Bergemann,^a Thi T. Le,^a Julián Puszkiel,^ae Roberto Gobetto,^b Marcello Baricco,

^b Bjørn C. Hauback,^c Thomas Klassen^a and Martin Dornheim^a

Author affiliations

* Corresponding authors

^a Nanotechnology Department, Helmholtz-Zentrum Geesthacht Max-Planck Straße 1, Geesthacht, Germany
E-mail: antonio.santoru@hzg.de

^b Department of Chemistry and NIS centre, University of Torino, V. Giuria 7, Torino, Italy

^c Physics Department, Institute for Energy Technology (IFE), P.O. Box 40, NO-2027 Kjeller, Norway

^d Department of Chemistry and Pharmacy, University of Sassari, V. Vienna 2, Sassari, Italy

^e Department of Physicochemistry of Materials, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Centro Atómico Bariloche, Av. Bustillo km 9500, San Carlos de Bariloche, Argentina

Abstract

We report for the first time the formation of a metal amide–hydride solid solution. The dissolution of KH into KNH₂ leads to an anionic substitution, which decreases the interaction among NH₂⁻ ions. The rotational properties of the high temperature polymorphs of KNH₂ are thereby retained down to room temperature.

Chemical Communications

KNH₂–KH: a metal amide–hydride solid solution†

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