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Royle CG, Sotorrios L, Gyton MR, Brodie CN, Burnage AL, Furfari SK, Marini A, Warren MR, Macgregor SA, Weller AS. Single-Crystal to Single-Crystal Addition of H 2 to [Ir( iPr-PONOP)(propene)][BAr F4] and Comparison Between Solid-State and Solution Reactivity. Organometallics 2022; 41:3270-3280. [DOI: 10.1021/acs.organomet.2c00274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Cameron G. Royle
- Department of Chemistry, University of York, Heslington YO10 5DD, York, U.K
- Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Lia Sotorrios
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Matthew R. Gyton
- Department of Chemistry, University of York, Heslington YO10 5DD, York, U.K
| | - Claire N. Brodie
- Department of Chemistry, University of York, Heslington YO10 5DD, York, U.K
| | - Arron L. Burnage
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | | | - Anna Marini
- Diamond Light Source Ltd, Didcot OX11 0DE, U.K
- Department of Chemistry, University of Southampton, Southampton SO17 1BJ, U.K
| | | | - Stuart A. Macgregor
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Andrew S. Weller
- Department of Chemistry, University of York, Heslington YO10 5DD, York, U.K
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2
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Doyle LR, Galpin MR, Furfari SK, Tegner BE, Martínez-Martínez AJ, Whitwood AC, Hicks SA, Lloyd-Jones GC, Macgregor SA, Weller AS. Inverse Isotope Effects in Single-Crystal to Single-Crystal Reactivity and the Isolation of a Rhodium Cyclooctane σ-Alkane Complex. Organometallics 2022; 41:284-292. [PMID: 35273423 PMCID: PMC8900153 DOI: 10.1021/acs.organomet.1c00639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Indexed: 12/15/2022]
Abstract
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The
sequential solid/gas single-crystal to single-crystal reaction
of [Rh(Cy2P(CH2)3PCy2)(COD)][BArF4] (COD = cyclooctadiene) with H2 or
D2 was followed in situ by solid-state 31P{1H} NMR spectroscopy (SSNMR) and ex situ by solution quenching
and GC-MS. This was quantified using a two-step Johnson–Mehl–Avrami–Kologoromov
(JMAK) model that revealed an inverse isotope effect for the second
addition of H2, that forms a σ-alkane complex [Rh(Cy2P(CH2)3PCy2)(COA)][BArF4]. Using D2, a temporal window is determined
in which a structural solution for this σ-alkane complex is
possible, which reveals an η2,η2-binding mode to the Rh(I) center, as supported by periodic density
functional theory (DFT) calculations. Extensive H/D exchange occurs
during the addition of D2, as promoted by the solid-state
microenvironment.
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Affiliation(s)
- Laurence R. Doyle
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Martin R. Galpin
- Department of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, Oxford OX1 3QZ, United Kingdom
| | - Samantha K. Furfari
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Bengt E. Tegner
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS, United Kingdom
| | | | - Adrian C. Whitwood
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Scott A. Hicks
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Guy C. Lloyd-Jones
- Department of Chemistry, University of Edinburgh, Edinburgh, Scotland EH9 3FJ, United Kingdom
| | - Stuart A. Macgregor
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS, United Kingdom
| | - Andrew S. Weller
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
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3
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Furfari SK, Tegner BE, Burnage AL, Doyle LR, Bukvic AJ, Macgregor SA, Weller AS. Selectivity of Rh⋅⋅⋅H-C Binding in a σ-Alkane Complex Controlled by the Secondary Microenvironment in the Solid State. Chemistry 2021; 27:3177-3183. [PMID: 33112000 PMCID: PMC7898853 DOI: 10.1002/chem.202004585] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 10/27/2020] [Indexed: 12/13/2022]
Abstract
Single-crystal to single-crystal solid-state molecular organometallic (SMOM) techniques are used for the synthesis and structural characterization of the σ-alkane complex [Rh(tBu2 PCH2 CH2 CH2 PtBu2 )(η2 ,η2 -C7 H12 )][BArF 4 ] (ArF =3,5-(CF3 )2 C6 H3 ), in which the alkane (norbornane) binds through two exo-C-H⋅⋅⋅Rh interactions. In contrast, the bis-cyclohexyl phosphine analogue shows endo-alkane binding. A comparison of the two systems, supported by periodic DFT calculations, NCI plots and Hirshfeld surface analyses, traces this different regioselectivity to subtle changes in the local microenvironment surrounding the alkane ligand. A tertiary periodic structure supporting a secondary microenvironment that controls binding at the metal site has parallels with enzymes. The new σ-alkane complex is also a catalyst for solid/gas 1-butene isomerization, and catalyst resting states are identified for this.
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Affiliation(s)
| | - Bengt E. Tegner
- Institute of Chemical SciencesHeriot-Watt UniversityEdinburghEH14 4ASUK
| | - Arron L. Burnage
- Institute of Chemical SciencesHeriot-Watt UniversityEdinburghEH14 4ASUK
| | | | - Alexander J. Bukvic
- Department of ChemistryUniversity of YorkYorkYO10 5DDUK
- Department of ChemistryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
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Martínez-Martínez AJ, Royle CG, Furfari SK, Suriye K, Weller AS. Solid-State Molecular Organometallic Catalysis in Gas/Solid Flow (Flow-SMOM) as Demonstrated by Efficient Room Temperature and Pressure 1-Butene Isomerization. ACS Catal 2020; 10:1984-1992. [PMID: 32296595 PMCID: PMC7147255 DOI: 10.1021/acscatal.9b03727] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 01/05/2020] [Indexed: 02/06/2023]
Abstract
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The
use of solid–state molecular organometallic chemistry
(SMOM–chem) to promote the efficient double bond isomerization
of 1-butene to 2-butenes under flow–reactor conditions is reported.
Single crystalline catalysts based upon the σ-alkane complexes
[Rh(R2PCH2CH2PR2)(η2η2-NBA)][BArF4] (R
= Cy, tBu; NBA = norbornane; ArF = 3,5-(CF3)2C6H3) are prepared by hydrogenation
of a norbornadiene precursor. For the tBu-substituted system
this results in the loss of long-range order, which can be re-established
by addition of 1-butene to the material to form a mixture of [Rh(tBu2PCH2CH2PtBu2)(cis-2-butene)][BArF4] and [Rh(tBu2PCH2CH2PtBu2)(1-butene)][BArF4], in an order/disorder/order phase change. Deployment under flow-reactor
conditions results in very different on-stream stabilities. With R
= Cy rapid deactivation (3 h) to the butadiene complex occurs, [Rh(Cy2PCH2CH2PCy2)(butadiene)][BArF4], which can be reactivated by simple addition
of H2. While the equivalent butadiene complex does not
form with R = tBu at 298 K and on-stream conversion
is retained up to 90 h, deactivation is suggested to occur via loss
of crystallinity of the SMOM catalyst. Both systems operate under
the industrially relevant conditions of an isobutene co-feed. cis:trans
selectivites for 2-butene are biased in favor of cis for the tBu system and are more leveled for Cy.
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Affiliation(s)
| | - Cameron G. Royle
- Department of Chemistry, Chemistry Research Laboratories, University of Oxford, Oxford OX1 3TA, United Kingdom
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, United Kingsdom
| | - Samantha K. Furfari
- Department of Chemistry, Chemistry Research Laboratories, University of Oxford, Oxford OX1 3TA, United Kingdom
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, United Kingsdom
| | - Kongkiat Suriye
- SCG Chemicals, 1 Siam Cement Road, Bangsue, Bangkok 10800, Thailand
| | - Andrew S. Weller
- Department of Chemistry, Chemistry Research Laboratories, University of Oxford, Oxford OX1 3TA, United Kingdom
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, United Kingsdom
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5
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Furfari SK, Leech MC, Trathen N, Levis MC, Crossley IR. Correction: Cyaphide–alkynyl complexes: metal–ligand conjugation and the influence of remote substituents. Dalton Trans 2019; 48:13101. [DOI: 10.1039/c9dt90184a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Cyaphide–alkynyl complexes: metal–ligand conjugation and the influence of remote substituents’ by Samantha K. Furfari, et al., Dalton Trans., 2019, 48, 8131–8143.
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6
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Furfari SK, Leech MC, Trathen N, Levis MC, Crossley IR. Cyaphide–alkynyl complexes: metal–ligand conjugation and the influence of remote substituents. Dalton Trans 2019; 48:8131-8143. [DOI: 10.1039/c9dt01071h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of cyaphide–alkynyl complexes exhibits significant cooperativity between the electron accepting “–CP” ligand and remote alkynyl substituents, indicative of long-range communication.
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7
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Ansell MB, Furfari SK, Cloke FGN, Roe SM, Spencer J, Navarro O. Comparison of the Reactivity of the Low Buried-Volume Carbene Complexes (ITMe)2Pd(PhC≡CPh) and (ITMe)2Pd(PhN═NPh). Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Melvyn B. Ansell
- Department of Chemistry, University of Sussex, Falmer, Brighton, BN19QJ, U.K
| | - Samantha K. Furfari
- Department of Chemistry, University of Sussex, Falmer, Brighton, BN19QJ, U.K
| | | | - S. Mark Roe
- Department of Chemistry, University of Sussex, Falmer, Brighton, BN19QJ, U.K
| | - John Spencer
- Department of Chemistry, University of Sussex, Falmer, Brighton, BN19QJ, U.K
| | - Oscar Navarro
- Biomaterials and Biomechanics, School of Dentistry, Oregon Health & Science University, 2730 SW Moody Avenue, Portland, Oregon 97239, United States
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8
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Jürgens E, Buys KN, Schmidt AT, Furfari SK, Cole ML, Moser M, Rominger F, Kunz D. Optimised synthesis of monoanionic bis(NHC)-pincer ligand precursors and their Li-complexes. NEW J CHEM 2016. [DOI: 10.1039/c6nj01941b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A straightforward preparation of bis(imidazol)carbazole 4 from carbazole, its transformation to various bis(imidazolium) salts and their deprotonation to Li carbene complexes is presented.
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Affiliation(s)
- Eva Jürgens
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- D-72076 Tübingen
- Germany
| | - Kai N. Buys
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | - Anna-Theresa Schmidt
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- D-72076 Tübingen
- Germany
| | | | - Marcus L. Cole
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | - Michael Moser
- Organisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- D-69120 Heidelberg
- Germany
| | - Frank Rominger
- Organisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- D-69120 Heidelberg
- Germany
| | - Doris Kunz
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- D-72076 Tübingen
- Germany
- Organisch-Chemisches Institut
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9
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Abstract
IPrBr: an air stable NHC. A stereoelectronic and catalytic study of IPrBr is reported.
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Affiliation(s)
| | - Matthew R. Gyton
- School of Chemistry
- The University of New South Wales
- Sydney
- Australia
| | - Daniel Twycross
- School of Chemistry
- The University of New South Wales
- Sydney
- Australia
| | - Marcus L. Cole
- School of Chemistry
- The University of New South Wales
- Sydney
- Australia
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Alexander SG, Cole ML, Forsyth CM, Furfari SK, Konstas K. Bulky triazenide complexes of alumino- and gallohydrides. Dalton Trans 2009:2326-36. [DOI: 10.1039/b817397d] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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11
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Alexander SG, Cole ML, Furfari SK, Kloth M. Hydride–bromide exchange at an NHC—a new route to brominated alanes and gallanes. Dalton Trans 2009:2909-11. [DOI: 10.1039/b821367d] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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