Chiralization of Diamond Nets:Stretchable Helices and Chiral and Achiral Nets with Nearly Identical Unit Cells

摘要

Current interest in homochiral solids is rapidly expanding because of their potential applications in enantioselective processes.For inorganic oxides such as zeolites in which the basic structural building units such as[SiO4]~(4-)and[AlO4]~(5-)or secondary building units such as the double four-membered rings in[Si4Al4O16]~(4-)are achiral,the chirality must come from the spatial organization(usually helices)of achiral units.