Abstract
The reaction of triethylamine with Ru3(CO)12 in refluxing hexanes catalyzed by Fe2(CO)4(SEt)2(PPh3)2 is shown to yield the complex (¼-H)Ru3(CO)9¼3-n2-CH3C==NCH2CH3) as the major product (30%). An X-ray crystallographic investigation of I reveals that the organic ligand is parallel to one edge of the metal triangle and acts as a five-electron donor. The hydride was located; it symmetrically bridges the two metal atoms parallel to the C-N vector and is in the plane of the metal triangle. Compound I crystallizes in the PI space group with a = 8.396 (2) Å, b = 15.198 (3) Å, c = 8.093 (2) Å, a = 102.95 (2)°, ² = 108.63 (2)°, and y = 90.33 (2)°. Least-squares refinement based on 2867 observed reflections led to a final R value of 3.3% (Rv = 4.4%). The variable-temperature and 13C NMR spectra reveal that the organic ligand is fluxional, undergoing restricted oscillatory motion which is coupled to hydride edge hopping and axial- radial exchange on two of the three ruthenium atoms.
Lingua originale | Inglese |
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pagine (da-a) | 2074-2078 |
Numero di pagine | 5 |
Rivista | Organometallics |
Volume | 6 |
Numero di pubblicazione | 10 |
DOI | |
Stato di pubblicazione | Pubblicato - 1 ott 1987 |
Pubblicato esternamente | Sì |