Preparation of a microporous organometallic material
- Univ. of Illinois, Urbana, IL (United States)
Zeolites and transition-metal organometallic complexes have found widespread application as heterogeneous and homogeneous catalysts, respectively, the former on account of their microporosity and the latter on account of their selective reactivity toward organic molecules under mild conditions. Materials combining the properties of both classes of compounds are therefore of great interest and have been studied in the form of zeolite-supported organometallic complexes. We report here a new approach to this type of material where the microporous framework itself is organometallic. This approach is based on the observation that many zeolite frameworks are comprised of large aluminosilicate cages linked together into cross-linked, three-dimensional polymers and the idea that microporous organometallic analogues might be prepared by linking together organic cages in a similar fashion using transition-metal complexes. We describe here a successful implementation of this approach using C{sub 60} cages and -Ir(C{sub 2}H{sub 4})({mu}{sub 2}-Cl){sub 2}(C{sub 2}H{sub 4})Ir-linkages. C{sub 60} was selected as the cage unit due to its large size and its ability to bind up to six transition metals octahedrally in molecular and possibly in polymeric systems; [(C{sub 2}H{sub 4})Ir({mu}{sub 2}-Cl){sub 2}Ir-(C{sub 2}H{sub 4}){sub 2}] was selected as the linkage precursor since its ethylene ligands are easily displaced by other olefins. 23 refs., 3 figs.
- DOE Contract Number:
- FG02-91ER45439
- OSTI ID:
- 563868
- Journal Information:
- Chemistry of Materials, Vol. 8, Issue 7; Other Information: PBD: Jul 1996
- Country of Publication:
- United States
- Language:
- English
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