Dietz, Maximilian, Johnson, Alice, Martínez-Martínez, Antonio et al. (1 more author) (2019) The [Rh(Xantphos)]+ catalyzed hydroboration of diphenylacetylene using trimethylamine-borane. INORGANICA CHIMICA ACTA. pp. 9-13. ISSN 0020-1693
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].
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 The Authors. |
Keywords: | Amine borane,Hydroboration,Mechanism,Rhodium |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 03 Jan 2020 12:10 |
Last Modified: | 16 Oct 2024 16:17 |
Published Version: | https://doi.org/10.1016/j.ica.2019.03.032 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.ica.2019.03.032 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:155079 |
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Description: The[Rh(Xantphos)]+catalyzedhydroborationofdiphenylacetyleneusingtrimethylamine-borane
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