Pressure-Induced Structural Phase Transitions and Solid-State Reactions in Hydrogen Bromide and Hydrogen Sulfide

Abstract

Applying pressure to hydrogen-bonded crystal hydrogen bromide and hydrogen sulfide significantly alters the bonding nature and induces various kinds of phenomena: order-disorder transition, hydrogen-bond symmetrization, and molecular dissociation accompanied by the solid-state reactions. This article reviews the relationship between pressure-induced structural phase transitions and solid-state reactions, revealed from the cooperative works between high pressure experiments and the ab initio molecular dynamics simulations.