Novel binuclear rhodium complexes containing ketonic carbonyl and acetylene ligands
| Autor: | Timothy G. Southern, Martin R. Cowie |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Olefin fiber
Ligand Organic Chemistry chemistry.chemical_element Triad (anatomy) Photochemistry Biochemistry Medicinal chemistry Rhodium Inorganic Chemistry chemistry.chemical_compound medicine.anatomical_structure Acetylene chemistry Materials Chemistry medicine Moiety Molecule Physical and Theoretical Chemistry Derivative (chemistry) |
| Zdroj: | Journal of Organometallic Chemistry. 193:C46-C50 |
| ISSN: | 0022-328X |
| Popis: | The reaction of trans -[RhCl(CO)(DPM)] 2 (DPM = Ph 2 PCH 2 PPh 2 ) with dimethylacetylenedicarboxylate (DMA) and hexafluoro-2-butyne (HFB) yield the novel species [Rh 2 Cl 2 (μ-CO)(μ-Acet)(DPM) 2 ] (Acet = DMA, HFB). The X-ray structure determination of the DMA derivative indicates that the complex has the acetylene molecule coordinated as a cis -dimetallated olefin and also contains a ketonic carbonyl ligand. The long Rh⋯Rh separation (3.3542(9) A) suggests no metal—metal bond and the RhC(O)Rh angle (116.0(4)°) suggest sp 2 hybridization of the carbonyl carbon atom. Similarly the geometry at the acetylene ligand and the CC distance of the coordinated acetylene moiety (1.32(1) A) are consistent with the dimetallated olefinic formulation. This represents the first reported characterization of a ketonic carbonyl complex outside the Ni triad. These novel complexes have also been formed by the direct insertion of the acetylene molecules into the formal RhRh bond in [Rh 2 Cl 2 (μ-CO)(DPM) 2 ]. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|