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Inglis CM, Manzano RA, Kirk RM, Sharma M, Stewart MD, Watson LJ, Hill AF. Poly(imidazolyliden-yl)borato Complexes of Tungsten: Mapping Steric vs. Electronic Features of Facially Coordinating Ligands. Molecules 2023; 28:7761. [PMID: 38067496 PMCID: PMC10798377 DOI: 10.3390/molecules28237761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 11/21/2023] [Accepted: 11/21/2023] [Indexed: 01/22/2024] Open
Abstract
A convenient synthesis of [HB(HImMe)3](PF6)2 (ImMe = N-methylimidazolyl) is decribed. This salt serves in situ as a precursor to the tris(imidazolylidenyl)borate Li[HB(ImMe)3] pro-ligand upon deprotonation with nBuLi. Reaction with [W(≡CC6H4Me-4)(CO)2(pic)2(Br)] (pic = 4-picoline) affords the carbyne complex [W(≡CC6H4Me-4)(CO)2{HB(ImMe)3}]. Interrogation of experimental and computational data for this compound allow a ranking of familiar tripodal and facially coordinating ligands according to steric (percentage buried volume) and electronic (νCO) properties. The reaction of [W(≡CC6H4Me-4)(CO)2{HB(ImMe)3}] with [AuCl(SMe2)] affords the heterobimetallic semi-bridging carbyne complex [WAu(μ-CC6H4Me-4)(CO)2(Cl){HB(ImMe)3}].
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Affiliation(s)
| | | | | | | | | | | | - Anthony F. Hill
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
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2
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Frogley BJ, Hill AF. Synthesis and reactivity of 9,10-bis(4-trimethylsilylethynylbuta-1,3-diynyl)anthracene derived chromophores. Dalton Trans 2023; 52:4574-4584. [PMID: 36928328 DOI: 10.1039/d3dt00147d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
9,10-Bis(4-trimethylsilylethynylbutadiynyl)anthracene is readily availabe from the reaction of anthraquinone and LiCCCCSiMe3 followed by reduction with Sn(II) and serves as a convenient building block via desilylation and palladium-mediated C-C coupling processes for the construction of further butadiynylanthracenes terminated by metal complexes, arenes, haloarenes and alkynyl functionalities.
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Affiliation(s)
- Benjamin J Frogley
- Australian National University Research School of Chemistry, Canberra, Australian Capital Territory, Australia.
| | - Anthony F Hill
- Australian National University Research School of Chemistry, Canberra, Australian Capital Territory, Australia.
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3
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Huang F, Yan Z, Zheng X, Cai Y, Zhang H, Xia H. One‐Pot Synthesis of High‐Strained Metal Vinylidene and Metal Carbyne. Chemistry 2022; 28:e202201229. [DOI: 10.1002/chem.202201229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Fanping Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
- Shenzhen Grubbs Institute Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Zhewei Yan
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Xuejuan Zheng
- Shenzhen Grubbs Institute Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Yapeng Cai
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Hong Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Haiping Xia
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
- Shenzhen Grubbs Institute Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
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4
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Kooij B, Dong Z, Varava P, Fadaei-Tirani F, Scopelliti R, Piveteau L, Severin K. Vanadium complexes with N-heterocyclic vinylidene ligands. Chem Commun (Camb) 2022; 58:4204-4207. [PMID: 35274647 DOI: 10.1039/d2cc00768a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation and the structural characterization of vanadium complexes with terminal and bridging N-heterocyclic vinylidene ligands is reported. The synthesis of the complexes was enabled by utilization of diazoolefins as ligand precursors. Structural data and theoretical results show that N-heterocyclic vinylidenes can act as 6e- donor ligands, leading to strong metal-carbon interactions.
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Affiliation(s)
- Bastiaan Kooij
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
| | - Zhaowen Dong
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
| | - Paul Varava
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
| | - Laura Piveteau
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland.
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5
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Abstract
Carbide complexes remain a rare class of molecules. Their paucity does not reflect exceptional instability but is rather due to the generally narrow scope of synthetic procedures for constructing carbide complexes. The preparation of carbide complexes typically revolves around generating LnM-CEx fragments, followed by cleavage of the C-E bonds of the coordinated carbon-based ligands (the alternative being direct C atom transfer). Prime examples involve deoxygenation of carbonyl ligands and deprotonation of methyl ligands, but several other p-block fragments can be cleaved off to afford carbide ligands. This Review outlines synthetic strategies toward terminal carbide complexes, bridging carbide complexes, as well as carbide-carbonyl cluster complexes. It then surveys the reactivity of carbide complexes, covering stoichiometric reactions where the carbide ligands act as C1 reagents, engage in cross-coupling reactions, and enact Fischer-Tropsch-like chemistry; in addition, we discuss carbide complexes in the context of catalysis. Finally, we examine spectroscopic features of carbide complexes, which helps to establish the presence of the carbide functionality and address its electronic structure.
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Affiliation(s)
- Anders Reinholdt
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Jesper Bendix
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
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6
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Frogley BJ, Hill AF, Welsh SS. Symmetric and non-symmetric anthracen-diyl bis(alkylidynes). Dalton Trans 2021; 50:15502-15523. [PMID: 34676857 DOI: 10.1039/d1dt02537f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three examples of 9-bromo-10-(alkylidynyl)anthracenes, [W{CC(C6H4)2CBr}(CO)2(L)] (L = hydrotris(dimethylpyrazol-1-yl)borate Tp*, hydrotris(pyrazol-1-yl)borate Tp, hydrotris(2-mercapto-N-methylimidazol-1-yl)borate Tm) were prepared via modified Fischer-Mayr acyl oxide-abstraction protocols. With a sufficiently bulky ancillary ligand (L = Tp*) the aryl bromide is ammenable to cross-coupling reactions that enable more elaborate derivatives to be prepared. These including symmetric bis(alkylidynyl)anthracenes as well as non-palindromic examples bearing disparate metals and/or co-ligands. In contrast, these couplings fail for smaller ligands (L = Tp, Tm) where it was found that Pd0 or Pt0 were instead able to coordinate across two WC bonds to give trimetallic bow-tie complexes, [W2M{μ-CC(C6H4)2CBr}2(CO)4(L)2] (M = Pd, Pt; L = Tp, Tm).
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Affiliation(s)
- Benjamin J Frogley
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory, ACT 2601, Australia.
| | - Anthony F Hill
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory, ACT 2601, Australia.
| | - Steven S Welsh
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory, ACT 2601, Australia.
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7
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Frogley BJ, Hill AF, Kirk RM. Heterocyclic arsinocarbynes via tandem transmetallation. Chem Commun (Camb) 2021; 57:8770-8773. [PMID: 34378572 DOI: 10.1039/d1cc03015a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Gold(i)-catalysed tandem transmetallation (Sn→Au→As) of the stannylcarbyne [W(≡CSnnBu3)(CO)2(Tp*)] (Tp* = hydrotris-(dimethylpyrazolyl)borate) with haloarsines gives direct access to a range of novel arsinocarbyne complexes, LnM≡CAsR2, including unusual heterocyclic phenarsazininyl and arsolyl examples.
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Affiliation(s)
- Benjamin J Frogley
- Research School of Chemistry, Australian National University, Australian Capital Territory, Canberra, ACT 2601, Australia.
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8
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Colebatch AL, Frogley BJ, Hill AF, Onn CS. Pnictogen‐Functionalised C
1
Ligands: MC‐AR
n
(
n
=0, 1, 2, 3). Chemistry 2021; 27:5322-5343. [DOI: 10.1002/chem.202004280] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Annie L. Colebatch
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Benjamin J. Frogley
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Anthony F. Hill
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
| | - Chee S. Onn
- Research School of Chemistry Australian National University Canberra ACT 2601 Australia
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9
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Frogley BJ, Hill AF, Shang R, Sharma M, Willis AC. In Search of Fulminate Analogues: L
n
M≡CP=NR. Chemistry 2020; 26:8819-8827. [DOI: 10.1002/chem.202000635] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 05/01/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Benjamin J. Frogley
- Research School of Chemistry The Australian National University Canberra ACT 2601 Australia
| | - Anthony F. Hill
- Research School of Chemistry The Australian National University Canberra ACT 2601 Australia
| | - Rong Shang
- Department of Chemistry Graduate School of Science Hiroshima University Hiroshima Japan
| | - Manab Sharma
- Research School of Chemistry The Australian National University Canberra ACT 2601 Australia
| | - Anthony C. Willis
- Research School of Chemistry The Australian National University Canberra ACT 2601 Australia
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10
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Frogley BJ, Hill AF, Seitz A. Bi- and poly(carbyne) functionalised polycyclic aromatics. Chem Commun (Camb) 2020; 56:3265-3268. [DOI: 10.1039/d0cc00786b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The Pd0/AuI-mediated coupling between a tungsten stannylcarbyne and a diverse range of aryl halides has allowed from one to four carbynes to be appended to, and bridged by, central aromatic ring systems including fused polycyclic examples.
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Affiliation(s)
- Benjamin J. Frogley
- Research School of Chemistry
- Australian National University
- Canberra
- Australian Capital Territory
- ACT 2601
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australian Capital Territory
- ACT 2601
| | - Antonia Seitz
- Research School of Chemistry
- Australian National University
- Canberra
- Australian Capital Territory
- ACT 2601
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11
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Abstract
A new synthetic approach to hetero-aryl substituted carbyne complexes has allowed the synthesis of bipyridyl functionalised carbynes and bis(carbynes) with three potential sites for metal coordination to either the two pyridyl donors or the WC bond.
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Affiliation(s)
- Benjamin J. Frogley
- Research School of Chemistry
- Australian National University
- Canberra
- Australian Capital Territory
- Australia
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australian Capital Territory
- Australia
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12
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Burt LK, Hill AF. Heterobimetallic μ2-carbido complexes of platinum and tungsten. Dalton Trans 2020; 49:8143-8161. [DOI: 10.1039/d0dt01617a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The tungsten–platinum μ-carbido complex [WPt(μ-C)Br(CO)2(PPh3)2(Tp*)] (Tp* = hydrotris(dimethylpyrazol-1-yl)borate) undergoes facile substitution of both bromide and phosphine ligands to afford a diverse library of μ-carbido complexes.
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Affiliation(s)
- Liam K. Burt
- Research School of Chemistry
- The Australian National University
- Canberra
- Australia
| | - Anthony F. Hill
- Research School of Chemistry
- The Australian National University
- Canberra
- Australia
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13
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Abstract
Porphyrins peripherally decorated with four transition-metal carbynes substituents are obtained in one step via a Pd0/AuI transmetallation shuttle beginning with a stannyl carbyne.
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Affiliation(s)
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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14
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Abstract
Heterobi- and tetrametallic phosphoniocarbyne bridged complexes arise from the reactions of the terminal phosphoniocarbyne [W(CPMe2Ph)(CO)2(Tp*)]PF6 with unsaturated metal centres.
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Affiliation(s)
- Chee S. Onn
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Angus Olding
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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