Ruthenium agostic (Phosphinoaryl)borane complexes: Multinuclear solid-state and solution NMR, X-ray, and DFT studies
Journal of the American Chemical Society, ISSN: 0002-7863, Vol: 133, Issue: 43, Page: 17232-17238
2011
- 37Citations
- 30Captures
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Article Description
The reactivity of the (o-phosphinophenyl)(amino)borane compound HB(N Pr )C H (o-PPh ) prepared from Li(C H )PPh and HBCl(N Pr ) toward the bis(dihydrogen) complex RuH (H ) (PCy ) (1) was studied by a combination of DFT, X-ray, and multinuclear NMR techniques including solid-state NMR, a technique rarely employed in organometallic chemistry. The study showed that the complex RuH {HB(N Pr )C H (o-PPh )} (PCy ) (3), isolated in excellent yield as yellow crystals and characterized by X-ray diffraction, led in solution to PCy dissociation and formation of an unsaturated 16-electron complex RuH {HB(N Pr )C H (o-PPh )}(PCy ) (4), with a hydride trans to a vacant site. In both cases, the (phosphinoaryl)(amino)borane acts as a bifunctional ligand through the phosphine moiety and a Ru-H-B interaction, thus featuring an agostic interaction. © 2011 American Chemical Society.
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