TY  - JOUR
AU  - Frost, Mungo
AU  - Abraham, Kilian
AU  - Goncharov, Alexander F.
AU  - McWilliams, R. Stewart
AU  - Husband, Rachel J.
AU  - Andrzejewski, Michal
AU  - Appel, Karen
AU  - Baehtz, Carsten
AU  - Bergermann, Armin
AU  - Brown, Danielle
AU  - Bykova, Elena
AU  - Celeste, Anna
AU  - Edmund, Eric
AU  - Hartley, Nicholas J.
AU  - Glazyrin, Konstantin
AU  - Graafsma, Heinz
AU  - Jaisle, Nicolas
AU  - Konôpková, Zuzana
AU  - Laurus, Torsten
AU  - Lin, Yu
AU  - Massani, Bernhard
AU  - Schörner, Maximilian
AU  - Schulze, Maximilian
AU  - Strohm, Cornelius
AU  - Tang, Minxue
AU  - Younes, Zena
AU  - Steinle-Neumann, Gerd
AU  - Redmer, Ronald
AU  - Glenzer, Siegfried H.
TI  - Synthesis of Gold Hydride at High Pressure and High Temperature
JO  - Angewandte Chemie / International edition
VL  - 64
IS  - 38
SN  - 1433-7851
CY  - Weinheim
PB  - Wiley-VCH
M1  - PUBDB-2025-04477
SP  - e202505811
PY  - 2025
AB  - Gold is an unreactive metal and its chemical interactions with hydrogen have only recently been explored. Here, we report the formation of gold hydride above 40 GPa and 2200 K in X-ray free electron laser heated diamond anvil cells using various hydrocarbons as hydrogen sources. Above 40 GPa, a hexagonal phase emerges close to the gold melting point, corresponding to a hydride with stoichiometry mathematical equation, with mathematical equation increasing from 0 to near 1 with pressure from 40 to 80 GPa. This is a high-temperature phase which reverts to face centered cubic gold on cooling to 295 K. Accompanying DFT-MD simulations are in excellent agreement with experiment and reveal the structure to consist of an hexagonal close packed gold lattice with atomic hydrogen disordered in the interstices. The hydrogen is superionic and exhibits high diffusivity through the crystalline gold lattice. Our results present the first solid-state binary compound of gold and hydrogen.
LB  - PUB:(DE-HGF)16
C6  - pmid:40755070
DO  - DOI:10.1002/anie.202505811
UR  - https://bib-pubdb1.desy.de/record/639383
ER  -