Synthesis of osmium hydride under high hydrogen pressure

2020/12/15 by Mikhail A. Kuzovnikov, Vasily S. Minkov, Stella Chariton +2 · 1 voice
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #High-pressure geophysics and materials #Hydrogen Storage and Materials #Rare-earth and actinide compounds

paper · doi:10.1103/physrevb.102.214109

openalex publication_date 2020/12/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/27

Abstract

High pressure is a very effective tool for the synthesis of new hydrogen-rich compounds, because it dramatically increases the reactivity of molecular hydrogen. Various new hydrides have been discovered in recent years, including superhydrides and materials with nearly room-temperature superconductivity (H₃S, LaH₁₀, YH₉, etc.). Here, the authors study the hydrogen reactivity with osmium, which was the last group IV-X transition metal that could not be hydrogenated until now.

Citations

• High-Pressure Synthesis and Characterization of Iridium Trihydride
• Evidence for Superconductivity above 260 K in Lanthanum Superhydride at Megabar Pressures

Discussions

• Despite occasional dubious claims of possibly higher densities, the densest known ambient -stable material ever produced in macroscopic ( $\gtrsim$ milligrams) quantities is almost certainly the heavi [stackexchange, 2 points]

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