Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC02506D, Communication Hongrui Xiang, Zhihui Yang, Meiqing Shi, Fei Chai, Xiaoyun Liu, Qingwei Wang, Feiping Zhao, Liyuan Chai Phase-pure Zn3As2 was synthesized via pressurized sintering and functions as a valence-preset As3-precursor for controlled arsine generation. Combined experiment and DFT results reveal lower proton adsorption energies and reduced As-H...