Authors: Alexandra Navrotsky, Manuel Scharrer
Published: 2025-05-30
DOI: 10.1146/annurev-earth-041023-094742
Source: Full article
Chalcogenides (sulfides, selenides, tellurides, arsenides, antimonides) are important in natural processes, including formation of ore deposits on Earth, early stages of planetary accretion, and formation of condensates in planetary atmospheres. Their physicochemical properties render them suitable for a wide range of industrial applications. While thermodynamic data are available for many endmembers, there are significant gaps in both thermodynamic and associated structural constraints, especially for complex systems. The continuous evolution of high temperature calorimetry into oxidative drop solution calorimetry has facilitated the measurement of enthalpies of formation and mixing and surface energies involving nonoxides, including chalcogenides. These are essential for modeling processes in nature and technology and for understanding the underlying properties that define their stabilities. This article reviews the development of these calorimetric techniques and summarizes available thermochemical data for common chalcogenides.