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Isolation and Spontaneous Resolution of Eight-Coordinate Stereoisomers
Håkansson1, Vestergren, Gustafsson
1Department of Inorganic Chemistry, Chalmers University of Technology, S-412 96 Göteborg (Sweden).
Angewandte Chemie (International Ed. in English)
|July 30, 1999
Summary
Chiral samarium(II) iodide complexes were resolved into distinct right- and left-handed forms. These novel chiral metal complexes show promise as reagents for enantioselective reductions in chemistry.
Area of Science:
- Coordination Chemistry
- Chiral Synthesis
- Organometallic Chemistry
Background:
- Eight-coordinate samarium(II) iodide complexes exhibit propeller-like structures.
- Chiral resolution of metal complexes is crucial for enantioselective synthesis.
Purpose of the Study:
- To resolve propeller-shaped enantiomers of eight-coordinate SmI(2) complexes.
- To explore the potential of these resolved enantiomers as reagents in enantioselective reductions.
Main Methods:
- Crystallization of SmI(2) complexes from dimethoxyethane (dme) at ambient temperature.
- Resolution of right- and left-handed enantiomers.
Main Results:
- Successful resolution of propeller-shaped SmI(2) enantiomers was achieved.
- The resolved enantiomers represent a new class of chiral metal complexes.
Conclusions:
- The resolved SmI(2) enantiomers are novel chiral entities.
- These compounds hold potential as valuable reagents for enantioselective reductions.