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DIETZ, Maximilian, JOHNSON, Alice, MARTÍNEZ-MARTÍNEZ, Antonio and WELLER, Andrew S. (2019). The [Rh(Xantphos)]+ catalyzed hydroboration of diphenylacetylene using trimethylamine-borane. Inorganica Chimica Acta, 491, 9-13.
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Abstract
The rhodium(I) complex [Rh(κ3-P,O,P-Xantphos)(η2-PhC≡CPh)][BArF4] (ArF = 3,5-(CF3)2C6H4) is an effective catalyst for the cis-selective hydroboration of the alkyne diphenylacetylene using the amine-borane H3B·NMe3. Detailed mechanistic studies, that include initial rate measurements, full simulation of temporal profiles for a variety of catalyst and substrate concentrations, and speciation experiments, suggest a mechanism that involves initial coordination of alkyne and a saturation kinetics regime for amine-borane binding. The solid-state molecular structure of a model complex that probes the proposed resting state is also reported, [Rh(κ3-P,O,P-Xantphos)(NCMe)(η2-PhC≡CPh)][BArF4].
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 0302 Inorganic Chemistry; 0306 Physical Chemistry (incl. Structural); 0399 Other Chemical Sciences; Inorganic & Nuclear Chemistry |
| Identification Number: | https://doi.org/10.1016/j.ica.2019.03.032 |
| Page Range: | 9-13 |
| SWORD Depositor: | Symplectic Elements |
| Depositing User: | Symplectic Elements |
| Date Deposited: | 17 May 2022 15:41 |
| Last Modified: | 12 Oct 2023 12:02 |
| URI: | https://shura.shu.ac.uk/id/eprint/29938 |
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