Challet, S. and Blacque, O. and Gehart, G. and Kubicki, M. M. and Leblanc, J. C. and Moise, C. (1997) Synthesis of Cp-2'Ta(SH)H-2 from Cp-2'Ta(=S)H (Cp'=eta(5)-t-BuC5H4) and its application in the preparation of new hydrosulfido-bridged heterobimetallic complexes. NEW JOURNAL OF CHEMISTRY, 21 (8). pp. 903-908. ISSN 1144-0546, 1369-9261
Full text not available from this repository.Abstract
Reaction of Cp-2'Ta(=S)H 2(Cp' = eta(5)-t-BuC5H4) with sodium amalgam in the presence of water results in the formation of a new hydride tantalocene complex Cp-2'Ta(SH)H-2. This complex binds unsaturated fragments such as [M'(CO)(5)] (M' = Cr or W) and leads to hydrosulfido-bridged heterobimetallic complexes 4. H-1 NMR data of complexes 4 indicate a rapid configuration inversion at the chiral sulfur atom. The crystal structure of the bimetallic compound Cp-2'Ta(H)(2)(mu-SH)W(Co)(5) 4b has been solved. The Ta-W distance of 4.644(1) Angstrom is nonbonding and the su[fur atom occupies the central position in the Cp-2'TaH2S framework. Extended Huckel molecular orbital calculations have been performed on metalloligand 3 and on the dinuclear complex 4b. A good relationship between the NMR, X-ray, and EHMO results is observed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTRON-TRANSFER REACTIONS; TRANSITION-METAL-COMPLEXES; E = S; CRYSTAL-STRUCTURES; SULFUR; LIGANDS; BOND; SULFIDE; REACTIVITY; CHEMISTRY; tantalum; heterobimetallic complexes; hydrosulfide bridge; EHMO; X-ray analysis |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Apr 2023 06:13 |
| Last Modified: | 25 Apr 2023 06:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/50677 |
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