New insights into structural diversity of open-framework silicates inspired by the exploration of the Cs2O–CaO–SiO2 system
Abstract
The structure of unique compound Cs4Ca[Si8O19] reported recently by Kahlenberg [(2025), Acta Cryst. B81, 325–336] contributes to the broader understanding of structure–property relationships in open-framework silicates (as well as silicates with mixed octahedral–tetrahedral frameworks), with potential implications for ion-exchange, catalysis, and materials with tailored thermal expansion.