Reactivity of the 1-azavinylidene cluster [Ru3(μ-H)(μ-NCPh2)(CO)10] with hydrogen, tertiary silanes and tertiary stannanes
| Autor: | Javier A. Cabeza, Claudette Bois, Victor Riera, R. Jesus Franco, Enrique Saborit |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Silanes
Ligand Organic Chemistry chemistry.chemical_element Photochemistry Biochemistry Stannane Medicinal chemistry Ruthenium Inorganic Chemistry Metal chemistry.chemical_compound chemistry visual_art Reagent Materials Chemistry visual_art.visual_art_medium Reactivity (chemistry) Physical and Theoretical Chemistry Derivative (chemistry) |
| Zdroj: | Journal of Organometallic Chemistry. 564:201-207 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/s0022-328x(98)00716-5 |
| Popis: | The reactivity of the 1-azavinylidene cluster [Ru 3 ( μ -H)( μ -NCPh 2 )(CO) 10 ] ( 1 ) with hydrogen, tertiary silanes and tertiary stannanes has been investigated. The reaction of 1 with hydrogen (1 atm, 110°C) gives [Ru 4 ( μ -H) 4 (CO) 12 ] and H 2 NCHPh 2 as end-products, proceeding via the imido and amido intermediates [Ru 3 ( μ -H) 2 ( μ 3 -NCHPh 2 )(CO) 9 ] ( 2 ) and [Ru 3 ( μ -H)( μ -HNCHPh 2 )(CO) 10 ] ( 3 ), respectively. Although no reaction is observed between compound 1 and tertiary organosilanes at 110°C, 1 reacts readily with tertiary organostannanes to give [Ru 3 ( μ -H) 2 ( μ -NCPh 2 )(SnR 3 )(CO) 9 ] ( 4 : R=Ph; 5 : R=Bu). 1 H-NMR spectroscopy and the X-ray structure of the triphenylstannyl derivative 4 demonstrate that the addition of the stannane reagents to 1 takes place on the cluster metal framework. No transfer of the stannyl group from the metal to the azavinylidene ligand is observed at 110°C. This is in contrast with the results obtained in the hydrogenation of 1 , where reduction of the azavinylidene ligand is observed under comparable reaction conditions. |
| Databáze: | OpenAIRE |
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