Journal of inclusion phenomena and molecular recognition in chemistry vol:21 issue:1-4 pages:185-213
Researchers have devised several procedures for synthesizing transition metal ion (TMI) complexes in zeolite cavities and channels. Two main routes have been envisaged: synthesis with a preformed complex and complex assembly in the zeolite. An overview of the different preparation methods and of the TMI-complexes, encaged in zeolites, is given. These complexes have been mainly studied in zeolite Y. The zeolite is a non-coordinating anion, a solvent, or a ligand. It reduces the mobility of the complexes and provides chemisorption sites. Future developments will comprise the use of wide-pore zeolites and zeotypes (e.g., VPI-5, MCM-41, hexagonal faujasite) and the design of optically active surfaces. Furthermore, there is a need for quantification in general and for selectively synthesizing one type of complex.
Inclusion Chemistry in Zeolites, Nanoscale Materials by Design