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Prediction and Synthesis of Mg$_4$Pt$_3$H$_6$: A Metallic Complex Transition Metal Hydride Stabilized at Ambient Pressure
Wencheng Lu, Michael J. Hutcheon, Mads F. Hansen, Kapildeb Dolui, Shubham Sinha, Mihir R. Sahoo, Chris J. Pickard, Christoph Heil, Anna Pakhomova, Mohamed Mezouar, Dominik Daisenberger, Stella Chariton, Vitali Prakapenka, Matthew N. Julian, Rohit P. Prasankumar, Timothy A. Strobel

Prediction and Synthesis of Mg$_4$Pt$_3$H$_6$: A Metallic Complex Transition Metal Hydride Stabilized at Ambient Pressure
The low-pressure stabilization of superconducting hydrides with high critical temperatures ($T_c$s) remains a significant challenge, and experimentally verified superconducting hydrides are generally constrained to a limited number of structural prototypes. Ternary transition-metal complex hydrides (hydrido complexes)-typically regarded as hydrogen storage materials-exhibit a large range of compounds stabilized at low pressure with recent predictions for high-$T_c$ superconductivity. Motivated …