✦ LIBER ✦
Intramolecular Dynamics of Tetranuclear Iridium Carbonyl Cluster Compounds. Part III. Crystallographic and dynamic evidence for the intermediate of the ‘merry-go-round’ process in nonacarbonyl-μ3-(1,3,5-trithiane)-tetrairidium
✍ Scribed by Gianfranco Suardi; Andres Strawczynski; Renzo Ros; Raymond Roulet; Fabrizia Grepioni; Dario Braga
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- German
- Weight
- 376 KB
- Volume
- 73
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
The title complex crystallises in two C~3v~, isomeric forms differing in carbonyl‐ligand arrangement. In solution, the isomer 1b with three edge‐bridging carbonyls on a common face of the metal tetrahedron converts via an endothermic equilibrium into the isomer 1u with no bridging carbonyls. The latter was shown by ^13^C‐NMR to be the intermediate of the ‘merry‐go‐round’ process which exchanges the sites of the basal CO's.