| Autor: |
W. C. Mercer, S. M. Zahurak, C. W. Debrosse, Cortlandt G. Pierpont, David A. Roberts, M. E. Cass, Gregory L. Geoffroy |
| Rok vydání: |
1982 |
| Předmět: |
|
| Zdroj: |
Chemischer Informationsdienst. 13 |
| ISSN: |
0009-2975 |
| DOI: |
10.1002/chin.198221288 |
| Popis: |
The reversibility of the reaction has allowed a quantitative assessment of the kinetic lability of the cobalt-rhodium bond through detailed variable temperature NMR studies. (PEt/sub 3/)/sub 2/(CO)Rh-Co(CO)/sub 4/ was prepared by the dropwise addition of a THF solution of K(Co(CO)/sub 4/) to a THF solution of RhCl(CO)(PEt/sub 3/)/sub 2/, under a nitrogen atmosphere. After stirring the mixture at 50/sup 0/C for 24h, the THF was removed and the residue extracted with petroleum ether. Cooling the extract to -65/sup 0/C produced a 77% yield of the complex. The solid state structure is illustrated; values for relative bond angles and bond lengths are given. Structural data indicate that the complex is coordinately unsaturated and is best formulated as possessing a polar-metal Rh(I) and Co(-I) center. The (Co(CO)/sub 4/)/sup -/ group behaves as a pseudohalide, the Rh-Co interaction is relatively weak, easily displaced by acetonitrile and THF. The rate of metal bond cleavage is extremely fast. 2 figures. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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