Cite Jump to ExpandCollapse ArticleMarch 18, 2026 Hard–Soft Acid–Base Principle Drives Rational Synthesis of Super-Dense Rare-Earth-Based Diatomic Sites Click to copy article linkArticle link copied! Yimeng Cai Yimeng Cai State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China ShenSi Lab, Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Longhua...