Multivariate sodalite zeolitic imidazolate frameworks: a direct solvent-free synthesis
Javier López‐Cabrelles, Eugenia Miguel‐Casañ, María Esteve-Rochina, Eduardo Andrés-García, Íñigo J. Vitórica‐Yrezábal, Joaquín Calbo, Guillermo Mı́nguez Espallargas
Abstract
isoreticular to ZIF-8, unachievable by conventional synthetic routes, have been prepared using a solvent-free methodology. In particular, the versatility of this method is demonstrated with three different metal centres (Zn, Co and Fe) and binary combinations of three different ligands (2-methylimidazole, 2-ethylimidazole and 2-methylbenzimidazole). One combination of ligands, 2-ethylimidazole and 2-methylbenzimidazole, results in the formation of SOD frameworks for the three metal centres despite this topology not being obtained for the individual ligands. Theoretical calculations confirm that this topology is the lowest in energy upon ligand mixing.