Cesium Platinide Hydride 4Cs2 Pt⋅CsH: An Intermetallic Double Salt Featuring Metal Anions

Volodymyr Smetana; Anja-Verena Mudring

doi:10.1002/anie.201606682

Cesium Platinide Hydride 4Cs₂ Pt⋅CsH: An Intermetallic Double Salt Featuring Metal Anions

Angew Chem Int Ed Engl. 2016 Nov 14;55(47):14838-14841. doi: 10.1002/anie.201606682. Epub 2016 Oct 24.

Authors

Volodymyr Smetana¹, Anja-Verena Mudring^{1

2}

Affiliations

¹ Ames Laboratory, US Department of Energy, and Critical Materials Institute, Ames, Iowa, 50011-3020, USA.
² Department of Materials Sciences and Engineering, Iowa State University, Ames, Iowa, 50011-3111, USA.

PMID: 27775213
DOI: 10.1002/anie.201606682

Abstract

With Cs₉ Pt₄ H a new representative of ionic compounds featuring metal anions can be added to this rare-membered family. Cs₉ Pt₄ H exhibits a complex crystal structure containing Cs⁺ cations, Pt^2- and H^- anions. Being a red, transparent compound its band gap is in the visible range of the electromagnetic spectrum and the ionic type of bonding is confirmed by quantum chemical calculations. This cesium platinide hydride can formally be considered as a double salt of the "alloy" cesium-platinum, or better cesium platinide, Cs₂ Pt, and the salt cesium hydride CsH according to Cs₉ Pt₄ H≡4 Cs₂ Pt⋅CsH.

Keywords: cesium; electronic structure; hydrides; platinum; relativistic effects.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.