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Hernandez S, Belov DS, Krivovicheva V, Senthil S, Bukhryakov KV. Decreasing the Bond Order between Vanadium and Oxo Ligand to Form 3d Schrock Carbynes. J Am Chem Soc 2024; 146:18905-18909. [PMID: 38968596 DOI: 10.1021/jacs.4c07588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2024]
Abstract
Preserving vanadium in a high oxidation state during chemical transformations can be challenging due to the oxidizing nature of V(+5) species. Oxo and similar isoelectronic ligands have been utilized to stabilize V(+5) by extensive π-donation. However, decreasing the bond order between V and the oxo ligand often results in a reduction of the metal center. Herein, we report a unique transformation involving anionic V(+5) alkylidene that converts a V(+5) oxo complex to a V(+5) alkylidyne in three steps without altering the oxidation state of the metal center. This method has been used to obtain rare 3d Schrock carbynes, which provide easy and scalable access to V(+5) alkylidynes.
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Affiliation(s)
- Shirley Hernandez
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Dmitry S Belov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Vasilisa Krivovicheva
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Shuruthi Senthil
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Konstantin V Bukhryakov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
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2
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Senthil S, Fehn D, Gau MR, Bacon AM, Carroll PJ, Meyer K, Mindiola DJ. A Vanadium Methylidene. J Am Chem Soc 2024; 146:15666-15671. [PMID: 38830196 DOI: 10.1021/jacs.4c01906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Examples of stable 3d transition metal methylidene complexes are extremely rare. Here we report an isolable and stable vanadium methylidene complex, [(PNP)V(=NAr)(=CH2)] (PNP = N[2-PiPr2-4-methylphenyl]-, Ar = 2,6-iPr2C6H3), via H atom transfer (HAT) from [(PNP)V(NHAr)(CH3)] or [(PNP)V(=NAr)(CH3)] using two or one equivalents of the TEMPO radical (TEMPO = (2,2,6,6-tetramethylpiperidin-1-yl)oxyl), respectively. Alternatively, the vanadium methylidene moiety can also be formed via the treatment of transient [(PNP)V=NAr] with the Wittig reagent, H2CPPh3. Structural and spectroscopic analysis, including 13C enriched labeling of the methylidene ligand, unequivocally confirmed the terminal nature of a rare 3d methylidene complex, featuring a V=CH2 bond distance of 1.908(2) Å and a highly downfield 13C NMR spectral shift at 298 ppm. In the absence of the ylide, intermediate [(PNP)V=NAr] activates dinitrogen to form an end-on bridging N2 complex, [(PNP)V(=NAr)]2(μ2-η1:η1-N2), having a singlet ground state. Complex [(PNP)V(=NAr)(=CH2)] reacts with H3COTf to form [(PNP)V(=NAr)(OTf)], accompanied by the release of ethylene as evidenced by 1H NMR spectroscopy, and reactivity studies suggest a β-hydride elimination pathway.
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Affiliation(s)
- Shuruthi Senthil
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Dominik Fehn
- Department of Chemistry & Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Michael R Gau
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Alexandra M Bacon
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Patrick J Carroll
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Karsten Meyer
- Department of Chemistry & Pharmacy, Inorganic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Daniel J Mindiola
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
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3
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Nomura K, Mekcham S. Organometallic complexes of vanadium and their reactions. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2023. [DOI: 10.1016/bs.adomc.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Belov DS, Acosta CM, Garcia-Molina M, Rue KL, Solans-Monfort X, Bukhryakov KV. Synthesis and Activity of Vanadium Oxo NHC Alkylidenes. Remarkable Preference for Degenerate Metathesis and Application for Carbon Isotope Exchange. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Dmitry S. Belov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Carlos M. Acosta
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Miquel Garcia-Molina
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Kelly L. Rue
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | | | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
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George GM, Wolczanski PT, Cundari TR, MacMillan SN. Reactivity of 1.1.1-Propellane with (silox) 3M (M = Ti, V, Cr): Structures of (silox) 3V═( cC 4H 4)═CH 2 and [(silox) 3Cr–(1.1.1-C 5H 6)−] 2. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gregory M. George
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University Ithaca, New York 14853, United States
| | - Peter T. Wolczanski
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University Ithaca, New York 14853, United States
| | - Thomas R. Cundari
- Department of Chemistry, CasCam University of North Texas Denton, Texas 76201, United States
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University Ithaca, New York 14853, United States
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6
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Fostvedt JI, Mendoza J, Lopez-Flores S, Alcantar D, Bergman RG, Arnold J. Engendering reactivity at group 5-heteroatom multiple bonds via π-loading. Chem Sci 2022; 13:8224-8242. [PMID: 35919706 PMCID: PMC9297388 DOI: 10.1039/d2sc02706b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 06/20/2022] [Indexed: 11/28/2022] Open
Abstract
In this Perspective, we discuss the strategy of π-loading, i.e., coordination of two or more strongly π-donating ligands to a single metal center, as it applies to promoting reactivity at group 5 transition metal-imido groups. When multiple π-donor ligands compete to interact with the same symmetrically-available metal dπ orbitals, the energy of the imido-based frontier molecular orbitals increases, leading to amplified imido-based reactivity. This strategy is of particular relevance to group 5 metals, as mono(imido) complexes of these metals tend to be inert at the imido group. Electronic structure studies of group 5 bis(imido) complexes are presented, and examples of catalytically and stoichiometrically active group 5 bis(imido) and chalcogenido-imido complexes are reviewed. These examples are intended to encourage future work exploring π-loaded bis(imido) systems of the group 5 triad.
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Affiliation(s)
- Jade I Fostvedt
- Department of Chemistry, University of California Berkeley CA 94720 USA
| | - Jocelyne Mendoza
- Department of Chemistry, University of California Berkeley CA 94720 USA
| | - Sacy Lopez-Flores
- College of Letters & Science, University of California Berkeley CA 94720 USA
| | - Diego Alcantar
- Department of Chemistry, University of California Berkeley CA 94720 USA
| | - Robert G Bergman
- Department of Chemistry, University of California Berkeley CA 94720 USA
| | - John Arnold
- Department of Chemistry, University of California Berkeley CA 94720 USA
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7
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Sousa-Silva A, Paredes-Gil K, de Matos JME, Sá É. Singlet Spin State Drives [V]-Carbene To Catalyze Olefin Metathesis: A Computational Analysis. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Adenilson Sousa-Silva
- Departamento de Química, Universidade Federal do Piauí, Teresina, PI 64049-505, Brazil
- Laboratório de Química Teórica, Universidade Federal do Piauí, Teresina, PI 64049-505, Brazil
| | - Katherine Paredes-Gil
- Departamento de Química, Facultad de Ciencias Naturales, Matemática y del Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago 8940577, Chile
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación (PIDi), Universidad Tecnológica Metropolitana, Santiago 8940577, Chile
| | | | - Égil Sá
- Laboratório de Química Teórica, Universidade Federal do Piauí, Teresina, PI 64049-505, Brazil
- Universidade Federal do Delta do Parnaíba, Parnaíba, PI 64202-020, Brazil
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8
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Tejeda G, Belov DS, Fenoll DA, Rue KL, Tsay C, Solans-Monfort X, Bukhryakov KV. Vanadium Imido NHC Complexes for Ring-Closing Olefin Metathesis Reactions. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Gabriela Tejeda
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Dmitry S. Belov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Didac A. Fenoll
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Kelly L. Rue
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Charlene Tsay
- Department of Chemistry, University of California, Riverside, California 92591, United States
| | | | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
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Belov DS, Fenoll DA, Chakraborty I, Solans-Monfort X, Bukhryakov KV. Synthesis of Vanadium Oxo Alkylidene Complex and Its Reactivity in Ring-Closing Olefin Metathesis Reactions. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00425] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dmitry S. Belov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | - Didac A. Fenoll
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Indranil Chakraborty
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
| | | | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States
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Belov DS, Tejeda G, Tsay C, Bukhryakov KV. Ring‐Closing Olefin Metathesis Catalyzed by Well‐Defined Vanadium Alkylidene Complexes. Chemistry 2021; 27:4578-4582. [DOI: 10.1002/chem.202005438] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Indexed: 02/03/2023]
Affiliation(s)
- Dmitry S. Belov
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| | - Gabriela Tejeda
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
| | - Charlene Tsay
- Department of Chemistry University of California Riverside CA 92521 USA
| | - Konstantin V. Bukhryakov
- Department of Chemistry and Biochemistry Florida International University 11200 SW 8th St. Miami FL 33199 USA
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11
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Affiliation(s)
- Wesley S. Farrell
- Chemistry Department United States Naval Academy 572 M Holloway Rd. Annapolis MD 21402 USA
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