1
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Burt LK, Hill AF. Isonitrile μ 2-carbido complexes. Dalton Trans 2023; 52:13906-13922. [PMID: 37750400 DOI: 10.1039/d3dt02649c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
The μ-carbido complex [WPt(μ-C)Br(CO)2(PPh3)2(Tp*)] (Tp = hydrotris(dimethylpyrazolyl)borate) undergoes substitution of one phosphine ligand with isonitriles to afford complexes [WPt(μ-C)Br(CNR)(CO)2(PPh3)(Tp*)] (R = tBu, C6H3Me2-2,6, C6H2Me3-2,4,6). For aryl but not alkyl isocyanides disubstitution follows to afford [WPt(μ-C)Br(CNR)2(CO)2(Tp*)] (R = C6H2Me2-2,6, C6H2Me3-2,4,6). The bis(isonitrile) derivatives, including [WPt(μ-C)Br(CNtBu)2(CO)2(Tp*)], may also be prepared from the reactions of triangulo-[Pt3(CNR)6] with [W(CBr)(CO)2(Tp*)]. Bis- and tris(dimethylpyrazolyl)borate pro-ligand salts replace the bromide and one phosphine in [WPt(μ-C)Br(CNC6H2Me3)(CO)2(PPh3)(Tp*)] or the bromide and one isonitrile in [WPt(μ-C)Br(CNC6H2Me3)2(CO)2(Tp*)] to afford [WPt(μ-C)(CNC6H2Me3)(CO)2(Tp*)(L)] (L = κ2-Tp*, dihydrobis(pyrazolyl)borate). Structural, spectroscopic and computational data for the complexes are discussed to interrogate the nature of the WC-Pt carbido bridge by analogy with a range of other sp-C1 and sp-B1 ligands (CN, CCH, CP, CAs, CSb, CNO, BO, BNH and BCH2).
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Affiliation(s)
- Liam K Burt
- Research School of Chemistry, Australian National University, Canberra, ACT, Australia.
| | - Anthony F Hill
- Research School of Chemistry, Australian National University, Canberra, ACT, Australia.
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2
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Cui M, Jia G. Organometallic Chemistry of Transition Metal Alkylidyne Complexes Centered at Metathesis Reactions. J Am Chem Soc 2022; 144:12546-12566. [PMID: 35793547 DOI: 10.1021/jacs.2c01192] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Transition metals form a variety of alkylidyne complexes with either a d0 metal center (high-valent) or a non-d0 metal center (low-valent). One of the most interesting properties of alkylidyne complexes is that they can undergo or mediate metathesis reactions. The most well-studied metathesis reactions are alkyne metathesis involving high-valent alkylidynes. High-valent alkylidynes can also undergo metathesis reactions with heterotriple bonded species such as N≡CR, P≡CR, and N≡NR+. Metathesis reactions involving low-valent alkylidynes are less known. Highly efficient alkyne metathesis catalysts have been developed based on Mo(VI) and W(VI) alkylidynes. Catalytic cross-metathesis of nitriles with alkynes has also been achieved with M(VI) (M = W, Mo) alkylidyne or nitrido complexes. The metathesis activity of alkylidyne complexes is sensitively dependent on metals, supporting ligands and substituents of alkylidynes. Beyond metathesis, metal alkylidynes can also promote other reactions including alkyne polymerization. The remaining shortcomings and opportunities in the field are assessed.
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Affiliation(s)
- Mingxu Cui
- Department of Chemistry, The Hong Kong University of Science and Technology, Kowloon, SAR, Hong Kong, China
| | - Guochen Jia
- Department of Chemistry, The Hong Kong University of Science and Technology, Kowloon, SAR, Hong Kong, China.,HKUST Shenzhen Research Institute, Shenzhen, 518057, China
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3
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Abstract
The reactivity of the tungsten diphenylarsinocarbyne [W(CAsPh2)(CO)2(Tp*)] (1; Tp* = hydrotris(dimethylpyrazolyl)borato) is described. The pyramidal arsenic coordinates to a selection of 5d metal centres, forming heterobi- or trimetallic complexes with osmium(II), iridium(III), platinum(II) and gold(I). In the latter case, the WC bond provides a competitive site for gold(I) coordination. Treatment with MeOSO2CF3 results in methylation at arsenic to give the first example of an arsoniocarbyne, [W(CAsPh2CH3)(CO)2(Tp*)]O3SCF3, for which only the WC bond remains available for gold(I) coordination.
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Affiliation(s)
- Benjamin J Frogley
- Research School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia.
| | - Anthony F Hill
- Research School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia.
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4
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Hill A, Burt LK, Onn CS, Kong RY, Dewhurst RD, Nahon EE. Heterobimetallic μ 2-Halocarbyne complexes. Dalton Trans 2022; 51:12080-12099. [DOI: 10.1039/d2dt01558g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The halocarbyne complexes [M(≡CX)(CO)2(Tp*)] (M = Mo, W; X = Cl, Br; Tp* = hydrotris(dimethylpyrazolyl)borate) react with [AuCl(SMe2)], [Pt(-H2C=CH2)(PPh3)2] or [Pt(nbe)3] (nbe = norbornene) to furnish rare examples of μ2-halocarbyne...
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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, 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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7
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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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8
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Manzano RA, Hill AF, Georgelin RL. Tetrel and pnictogen functionalised propargylidynes. Chem Commun (Camb) 2020; 56:14597-14600. [PMID: 33155585 DOI: 10.1039/d0cc06196d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of [W([triple bond, length as m-dash]CC[triple bond, length as m-dash]CSiMe3)(CO)2(Tp*)] (Tp* = tris(dimethylpyrazolyl)borate) with AgNO3 affords {[W([triple bond, length as m-dash]CC[triple bond, length as m-dash]CAg)-(CO)2(Tp*)][AgNO3]}n while [Hg{C[triple bond, length as m-dash]CC[triple bond, length as m-dash]W(CO)2(Tp*)}2] with nBuLi affords [W([triple bond, length as m-dash]CC[triple bond, length as m-dash]CLi)(CO)2(Tp*)]. These anhydrous reagents allow the installation of main group elements (e.g., Si, Sn, Pb, P, As) as propargylidyne termini.
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Affiliation(s)
- Richard A Manzano
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 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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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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11
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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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12
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Burt LK, Cordiner RL, Hill AF, Manzano RA, Wagler J. The significance of phosphoniocarbynes in halocarbyne cross-coupling reactions. Chem Commun (Camb) 2020; 56:5673-5676. [DOI: 10.1039/d0cc02070b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Competent intermediates as well as productive and non-productive tangents have been identified in the catalytic cycle for palladium(0)–copper(i) mediated synthesis of propargylidynes via cross coupling reactions of bromocarbyne complexes with alkynes.
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Affiliation(s)
- Liam K. Burt
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | | | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Richard A. Manzano
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Jörg Wagler
- Institut für Anorganische Chemie
- TU Bergakademie Freiberg
- 09599 Freiberg
- Germany
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13
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Chen X, Li Z, Frenking G, Fernández I, Zhao L, Grützmacher H. Bent Phosphaallenes With "Hidden" Lone Pairs as Ligands. Chemistry 2019; 25:7912-7920. [PMID: 30927503 DOI: 10.1002/chem.201900645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Indexed: 11/11/2022]
Abstract
Phosphaheteroallenes R-P=C=L, with L = N-heterocyclic carbenes (NHCs), can be viewed to a certain extent as phosphaisonitriles stabilized with NHCs, R-P=C:←L. The suitability of these molecules as ligands for coinage-metal ions was investigated and coordination through the central carbon center was observed in most cases. A combination of experiments, spectroscopic methods, and DFT calculations indicates the presence of a hidden electron pair at the carbon center of R-P=C:←L. Remarkably, this lone pair also inserts intramolecularly in C-H bonds showing the carbene-type reactivity which is expected for phosphaisonitriles.
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Affiliation(s)
- Xiaodan Chen
- College of Chemistry and Materials Science, Jinan University, 510632, Guangzhou, P. R. China
| | - Zhongshu Li
- Lehn Institute of Functional Materials (LIFM), School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 30071, Tianjin, P. R. China
| | - Gernot Frenking
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032, Marburg, Germany.,Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for, Advanced Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Israel Fernández
- Departamento de Química Orgánica I,Centro de Innovación en, Química Avanzada (ORFEO-CINQA), Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Lili Zhao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for, Advanced Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Hansjörg Grützmacher
- Lehn Institute of Functional Materials (LIFM), School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, 30071, Tianjin, P. R. China.,Department of Chemistry and Applied Biosciences, ETH Zurich, 8093, Zurich, Switzerland
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14
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Frogley BJ, Hill AF. Flexible Platinum(0) Coordination to a Ditungsten Ethanediylidyne. Angew Chem Int Ed Engl 2019; 58:8044-8048. [DOI: 10.1002/anie.201902116] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Indexed: 11/09/2022]
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
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15
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Frogley BJ, Hill AF. Flexible Platinum(0) Coordination to a Ditungsten Ethanediylidyne. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902116] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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
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16
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Barnett HJ, Hill AF. Halogenation of A-frame μ-carbido complexes: synthesis of μ2-halocarbynes. Chem Commun (Camb) 2019; 55:1734-1737. [DOI: 10.1039/c8cc09692a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The new A-frame μ2-carbido complexes [Rh2(μ2-C)X2(μ2-dppm)2] (X = Cl, Br; dppm = Ph2PCH2PPh2) react with PhICl2 or [pyH][Br3] to provide rare examples of μ2-halocarbyne complexes [Rh2(μ-CX)(μ-X)X4(μ-dppm)2] (X = Cl, Br).
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Affiliation(s)
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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17
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Frogley BJ, Hill AF, Watson LJ. New binding modes for CSe: coinage metal coordination to a tungsten selenocarbonyl complex. Dalton Trans 2019; 48:12598-12606. [DOI: 10.1039/c9dt02958c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of the new tungsten selenocarbonylate [Et4N][W(CSe)(CO)2(Tp*)] (Tp* = hydrotris(dimethyl-pyrazolyl)borate) with coinage metal based electrophiles provides access to a range of new bridging modes for the selenocarbonyl ligand.
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Affiliation(s)
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Lachlan J. Watson
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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18
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Frogley BJ, Genet TL, Hill AF, Onn CS. Alkynylselenolatoalkylidynes (LnMC–Se–CCR) as building blocks for mixed metal/main-group extended frameworks. Dalton Trans 2019; 48:7632-7643. [DOI: 10.1039/c9dt01504c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The reactions of [W(CBr)(CO)2(Tp*)] (Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate) with lithium alkynylselenolates LiSeCCR (R = SiMe3, SiiPr3, nBu, tBu, Ph, p-tolyl) afford the alkynylselenolatoalkylidyne complexes [W(CSeCCR)(CO)2(Tp*)].
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Affiliation(s)
| | - Tobias L. Genet
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Chee S. Onn
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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19
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Abstract
The reactions of [W(CBr)(CO)2(Tp*)] with a range of terminal alkynes (RCCH), mediated by [Pd(PPh3)4] and CuI, afford new propargylidynes [W(C–CCR)(CO)2(Tp*)] [R = tBu, C6H4X (X = H, NH2, NO2), APh3 (A = C, Si, Ge), B(O2CCH2)2NMe].
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Affiliation(s)
- Anthony F. Hill
- Research School of Chemistry
- The Australian National University
- Canberra
- Australia
| | - Richard A. Manzano
- Research School of Chemistry
- The Australian National University
- Canberra
- Australia
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20
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Colebatch AL, Frogley BJ, Hill AF. Phosphaisonitrile umpolung – synthesis and reactivity of chloro aminophosphino carbynes. Dalton Trans 2019; 48:10628-10641. [DOI: 10.1039/c9dt01838g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The synthesis of the first P-halo-aminophosphinocarbyne complex is described in addition to exploration of its ligand-based reactivity towards nucleophilic substitution and P-halide abstraction processes as a possible route to cationic aminophosphaisonitrile derivatives.
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Affiliation(s)
- Annie L. Colebatch
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | | | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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21
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Hill AF, Manzano RA. Synthesis and reactivity of an anionic allenylidene complex. Dalton Trans 2018; 47:1412-1416. [PMID: 29327750 DOI: 10.1039/c7dt04576j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of [W([triple bond, length as m-dash]CC[triple bond, length as m-dash]CSiMe3)(CO)2(Tp*)] (Tp* = hydrotris(dimethylpyrazolyl)borate) with MeLi generates the first example of an anionic allenylidene complex Li[W([double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash]CMeSiMe3)(CO)2(Tp*)] which reacts with electrophiles (H+, Me+) at the β-carbon to afford vinylcarbyne (allylidyne) complexes [W([triple bond, length as m-dash]CCE[double bond, length as m-dash]CMeSiMe3)(CO)2(Tp*)] (E = H, Me), and with bromine provides the unprecedented binuclear bis(carbyne) complex {C([double bond, length as m-dash]CMeSiMe3)C[triple bond, length as m-dash]W(CO)2(Tp*)}2via oxidative C-C coupling at the β-carbon.
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Affiliation(s)
- Anthony F Hill
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory ACT 2601, Australia.
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22
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Reinholdt A, Bendix J, Hill AF, Manzano RA. Confluence of disparate carbido chemistries: [WRuAu2(μ-C)2Cl2(CO)2(PCy3)2(Tp*)]. Dalton Trans 2018; 47:14893-14896. [DOI: 10.1039/c8dt03851a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The reaction of [Ru(CAuCl)Cl2(PCy3)2] with [W(CSnnBu3)(CO)2(Tp*)] (obtained from [W(CBr)(CO)2(Tp*)], nBuLi and ClSnnBu3) affords the heterotetrametallic bis(carbido) complex [WRuAu2(μ-C)2Cl3(CO)2(PCy3)2(Tp*)] in which the two distinct μ-carbido ligands adopt linear and T-shaped geometry at carbon.
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Affiliation(s)
- Anders Reinholdt
- Department of Chemistry
- University of Copenhagen
- Universitetsparken 5
- Denmark
| | - Jesper Bendix
- Department of Chemistry
- University of Copenhagen
- Universitetsparken 5
- Denmark
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Richard A. Manzano
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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23
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Frogley BJ, Hill AF. A complete set of pnictocarbynes: [M(CAPh2)(CO)2(Tp*)] (M = Mo, W; A = N, P, As, Sb, Bi; Tp* = hydrotris(dimethylpyrazolyl)-borate). Chem Commun (Camb) 2018; 54:2126-2129. [DOI: 10.1039/c8cc00143j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The first two complete series of pnictogen functionalised carbyne complexes, [M(CAPh2)(CO)2(Tp*)] (M = Mo, W; A = N, P, As, Sb, Bi; Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate), have been prepared.
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Affiliation(s)
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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24
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Barnett HJ, Burt LK, Hill AF. Simple generation of a dirhodium μ-carbido complex via thiocarbonyl reduction. Dalton Trans 2018; 47:9570-9574. [DOI: 10.1039/c8dt02524j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The reaction of [RhCl(CS)(PPh3)2] with excess catecholborane affords the cumulenic carbido complex [Rh2(μ-C)Cl2(PPh3)4] which undergoes phosphine and halide substitution to afford a range of complexes in which the RhCRh spine remains intact.
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Affiliation(s)
| | - Liam K. Burt
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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25
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Frogley BJ, Hill AF. Alkynylbis(alkylidynyl)phosphines: {LnMC}2PCCR. Chem Commun (Camb) 2018; 54:12373-12376. [DOI: 10.1039/c8cc07166g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Synthetic strategies are presented for the formation of alkynylbis(alkylidynyl)phosphines which represent promising building blocks for unsaturated 2- and 3-dimensional assemblies. Parent ethynyl derivatives provide a means for installing further donor functionalities, e.g., AsPh2 as shown.
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Affiliation(s)
- Benjamin J. Frogley
- Research School of Chemistry, Australian National University
- Canberra
- Australia
| | - Anthony F. Hill
- Research School of Chemistry, Australian National University
- Canberra
- Australia
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26
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Abstract
The synthesis and characterization of the first examples of bimetallic bis(alkylidynyl)arsines are described. For the tungsten complexes, these may be prepared by a potentially generalizable route: successive treatment of [W(CBr)(CO)2(Tp*)] with nBuLi, ACl3 (A = P, As) and a nucleophilic source of R−via the inferred intermediacy of [ClA{CW(CO)2(Tp*)}2].
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Affiliation(s)
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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27
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Reinholdt A, Bendix J. Weakening of Carbide–Platinum Bonds as a Probe for Ligand Donor Strengths. Inorg Chem 2017; 56:12492-12497. [DOI: 10.1021/acs.inorgchem.7b01956] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anders Reinholdt
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Jesper Bendix
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
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28
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Abstract
The reaction of the methylidyne complex [W([triple bond, length as m-dash]CH)Br(CO)2(dcpe)] (dcpe = 1,2-bis(dicyclohexylphosphino)ethane) with tBuLi affords the intermediate anionic neopentylidyne complex Li[W([triple bond, length as m-dash]CtBu)(CO)2(dcpe)] which acts as a metal-based nucleophile towards tBuCl, tBuBr, Ph2E2 (E = S, Se, Te) and ClSnMe3 to afford the new carbyne complexes [W([triple bond, length as m-dash]CtBu)(X)(CO)2(dcpe)] (X = Cl, Br, EPh, SnMe3).
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Affiliation(s)
- Anthony F Hill
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory ACT 2601, Australia.
| | - Richard Y Kong
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory ACT 2601, Australia.
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29
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Colebatch AL, Han YS, Hill AF, Sharma M, Shang R, Ward JS. Rearrangement of bis(alkylidynyl)phosphines to phospha-acyls. Chem Commun (Camb) 2017; 53:1832-1835. [DOI: 10.1039/c6cc09764b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A range of bis(alkylidynyl)phosphines RP{CM(CO)2(Tp*)}2 (M = Mo, W; R = Cl, Ph, Cy; Tp* = hydrotris(dimethylpyrazolyl)borate) are obtained from the reactions of [M(CLi)(CO)2(Tp*)] with Cl2PR or alternatively via the palladium(0)-mediated reactions of [W(CBr)(CO)2(Tp*)] with RPH2 (R = Py, Cy).
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Affiliation(s)
- Annie L. Colebatch
- Research School of Chemistry
- Australian National University
- Canberra
- Australian Capital Territory
- Australia
| | - Yong-Shen Han
- 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
| | - Manab Sharma
- Research School of Chemistry
- Australian National University
- Canberra
- Australian Capital Territory
- Australia
| | - Rong Shang
- Research School of Chemistry
- Australian National University
- Canberra
- Australian Capital Territory
- Australia
| | - Jas S. Ward
- Research School of Chemistry
- Australian National University
- Canberra
- Australian Capital Territory
- Australia
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30
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Abstract
Bromination of the carbyne complexes [W(CR)Br(CO)2(dcpe)] (R = Ph, SiPh3; dcpe = 1,2-bis(dicyclohexylphosphino)ethane) provides high oxidation state derivatives [W(CPh)Br3(dcpe)] and [W(CBr)Br3(dcpe)], the latter via an unprecedented bromodesilylation process.
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Affiliation(s)
- Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Richard Y. Kong
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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31
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Colebatch AL, Hill AF. Coordination chemistry of phosphinocarbynes: phosphorus vs. carbyne site selectivity. Dalton Trans 2017; 46:4355-4365. [DOI: 10.1039/c6dt04770j] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The phosphinocarbyne complex [W(CPPh2)(CO)2(Tp*)] (1: Tp* = hydrotris(dimethylpyrazolyl)borate) coordinates transition metal fragments via the phosphine to form bimetallic species [W{CPPh2RhCl2(Cp*)}(CO)2(Tp*)] (2) and [W(CPPh2AuCl)(CO)2(Tp*)] (3).
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Affiliation(s)
- Annie L. Colebatch
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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32
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Reinholdt A, Vosch T, Bendix J. Modification of σ-Donor Properties of Terminal Carbide Ligands Investigated Through Carbide-Iodine Adduct Formation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Anders Reinholdt
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark
| | - Tom Vosch
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark
| | - Jesper Bendix
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark
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33
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Reinholdt A, Vosch T, Bendix J. Modification of σ-Donor Properties of Terminal Carbide Ligands Investigated Through Carbide-Iodine Adduct Formation. Angew Chem Int Ed Engl 2016; 55:12484-7. [DOI: 10.1002/anie.201606551] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Anders Reinholdt
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark
| | - Tom Vosch
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark
| | - Jesper Bendix
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark
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34
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Affiliation(s)
- Annie L. Colebatch
- 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
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35
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2014. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Helmdach K, Rüger J, Villinger A, Seidel WW. Dual nucleophilic substitution at a W(ii) η(2)-coordinated diiodo acetylene leading to an amidinium carbyne complex. Chem Commun (Camb) 2016; 52:2616-9. [PMID: 26750261 DOI: 10.1039/c5cc10397e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The synthesis and reactivity of a W(ii) C2I2 complex towards various nucleophiles are described. Soft, aprotic nucleophiles like 4-dimethylaminopyridine (DMAP) lead to substitution of one CO at tungsten, whereas reaction with an excess of benzylamine results in a dual nucleophilic substitution at the alkyne moiety involving the rearrangement to a novel cationic amidinium carbyne complex.
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Affiliation(s)
- Kai Helmdach
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany.
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37
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Affiliation(s)
- Anthony F. Hill
- Research School of Chemistry, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Jas S. Ward
- Research School of Chemistry, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Yaoyao Xiong
- Research School of Chemistry, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
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38
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39
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Hill AF, Manzano RA, Sharma M, Ward JS. Selenoxopropadienylidene (CCCSe) as a Bridging Ligand. Organometallics 2014. [DOI: 10.1021/om5011534] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Anthony F. Hill
- Research School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia
| | - Richard A. Manzano
- Research School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia
| | - Manab Sharma
- Research School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia
| | - Jas S. Ward
- Research School of Chemistry, The Australian National University, Canberra, ACT 0200, Australia
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