Effect of cation-to-silicon ratio on structural transformation and optical performances in [NaSr3Cl3][SiS4] and [NaSr4SCl][Si3S9]

Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC00643D, Communication Puxuan Wang, Youbin Wang, Hongping Wu, Zhanggui Hu, Jiyang Wang, Yicheng Wu, Hongwei Yu Two novel salt-inclusion chalcogenides, [NaSr3Cl3][SiS4] and [NaSr4SCl][Si3S9] were synthesized. The structural transition from centrosymmetric [NaSr3Cl3][SiS4] (P21/m) to non-centrosymmetric [NaSr4SCl][Si3S9] (P63) and performance comparison were investigated. [NaSr4SCl][Si3S9] exhibits a wide band...