1
|
Kulyabin PS, Goryunov GP, Iashin AN, Mladentsev DY, Uborsky DV, Ehm C, Canich JAM, Hagadorn JR, Voskoboynikov AZ. Reversible C-C bond formation in group 4 metal complexes: nitrile extrusion via β-aryl elimination. Chem Sci 2024:d4sc02173h. [PMID: 39268207 PMCID: PMC11388100 DOI: 10.1039/d4sc02173h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 08/16/2024] [Indexed: 09/15/2024] Open
Abstract
Pyridylamides of zirconium and hafnium with [C,N,N]-ligands reversibly insert nitriles into M-CAr bonds leading to an observable equilibrium between the starting [C,N,N]-complexes and newly formed [N,N,N]-complexes with a ketimide moiety in a 7-membered metallacycle. The discovered reversible insertion of nitriles into M-CAr bonds represents an unprecedented example of β-aryl elimination from a ketimide ligand in early transition metal complexes. Experimental and computational studies suggest thermodynamic and electronic reasons for this reactivity. Weak orbital overlap between the ketimide nitrogen and the metal, and an unfavorable 7-membered metallacycle destabilize the product of insertion into the M-CAr bond, while the pyridylamide moiety acts as a directing group making the reverse process viable. The influence of non-chelate spectator ligands on the metal center and substituents in nitrile on the thermodynamic stability of the [N,N,N]-complexes was also studied. Exploiting β-carbon elimination in complexes of early transition metals may extend the range of catalysts that are accessible for C-C activation processes in the future.
Collapse
Affiliation(s)
- Pavel S Kulyabin
- Department of Chemistry, M. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Georgy P Goryunov
- Department of Chemistry, M. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Andrei N Iashin
- Department of Chemistry, M. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Dmitry Y Mladentsev
- Department of Chemistry, M. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Dmitry V Uborsky
- Department of Chemistry, M. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Christian Ehm
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II Via Cintia Napoli 80126 Italy
| | - Jo Ann M Canich
- Baytown Technology and Engineering Complex, ExxonMobil Technology and Engineering Company Baytown Texas 77520 USA
| | - John R Hagadorn
- Baytown Technology and Engineering Complex, ExxonMobil Technology and Engineering Company Baytown Texas 77520 USA
| | - Alexander Z Voskoboynikov
- Department of Chemistry, M. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| |
Collapse
|
2
|
Lamač M, Dunlop D, Lang K, Kubát P. Group 4 metallocene derivatives as a new class of singlet oxygen photosensitizers. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
3
|
Dunlop D, Večeřa M, Gyepes R, Kubát P, Lang K, Horáček M, Pinkas J, Šimková L, Liška A, Lamač M. Luminescent Cationic Group 4 Metallocene Complexes Stabilized by Pendant N-Donor Groups. Inorg Chem 2021; 60:7315-7328. [PMID: 33945274 DOI: 10.1021/acs.inorgchem.1c00461] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Cationic group 4 metallocene complexes with pendant imine and pyridine donor groups were prepared as stable crystalline [B(C6F5)4]- salts either by protonation of the intramolecularly bound ketimide moiety in neutral complexes [(η5-C5Me5){η5-C5H4CMe2CMe2C(R)═N-κN}MCl] (M = Ti, Zr, Hf; R = t-Bu, Ph) by PhNMe2H+[B(C6F5)4]- to give [(η5-C5Me5){η5-C5H4CMe2CMe2C(R)═NH-κN}MCl]+[B(C6F5)4]- or by chloride ligand abstraction from the complexes [(η5-C5Me5)(η5-C5H4CMe2CH2C5H4N)MCl2] (M = Ti, Zr) by Li[B(C6F5)4]·2.5Et2O to give [(η5-C5Me5)(η5-C5H4CMe2CH2C5H4N-κN)MCl]+[B(C6F5)4]-. Solid state structures of the new compounds were established by X-ray diffraction analysis, and their electrochemical behavior was studied by cyclic voltammetry. The cationic complexes of Zr and Hf, compared to the corresponding neutral species, exhibited significantly enhanced luminescence predominantly from triplet ligand-to-metal (3LMCT) excited states with lifetimes up to 62 μs and quantum yields up to 58% in the solid state. DFT calculations were performed to explain the structural features and optical and electrochemical properties of the complexes.
Collapse
Affiliation(s)
- David Dunlop
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha 8, Czech Republic.,Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Praha 2, Czech Republic
| | - Miloš Večeřa
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha 8, Czech Republic
| | - Róbert Gyepes
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha 8, Czech Republic.,Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Praha 2, Czech Republic
| | - Pavel Kubát
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha 8, Czech Republic
| | - Kamil Lang
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
| | - Michal Horáček
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha 8, Czech Republic
| | - Jiří Pinkas
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha 8, Czech Republic
| | - Ludmila Šimková
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha 8, Czech Republic
| | - Alan Liška
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha 8, Czech Republic
| | - Martin Lamač
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Praha 8, Czech Republic
| |
Collapse
|
4
|
Kent GT, Cook AW, Damon PL, Lewis RA, Wu G, Hayton TW. Synthesis and Characterization of Two "Tied-Back" Lithium Ketimides and Isolation of a Ketimide-Bridged [Cr 2] 6+ Dimer with Strong Antiferromagnetic Coupling. Inorg Chem 2021; 60:4996-5004. [PMID: 33764048 DOI: 10.1021/acs.inorgchem.1c00052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reaction of 1 equiv of KN(SiMe3)2 with 9-fluorenone results in the formation of (Me3Si)N═C13H8 (1) in high yield after work-up. Addition of 1 equiv of phenol to 1 results in rapid desilylation and formation of 9-fluorenone imine, HN═C13H8 (2). Subsequent reaction of 2 with 1 equiv of LiNiPr2 results in deprotonation and formation of [Li(Et2O)]4[N═C13H8]4 (3) in good yield. Reaction of 1 equiv of KN(SiMe3)2 with 2-adamantanone for 7 days at room temperature results in the formation of (Me3Si)N═C10H14 (4) in good yield. Dissolution of 4 in neat MeOH results in rapid desilylation concomitant with formation of 2-adamantanone imine, HN═C10H14 (5). Subsequent reaction of 5 with 1 equiv of LiNiPr2 results in formation of [Li(THF)]4[N═C10H14]4 (6). Both 3 and 6 were characterized by X-ray crystallography. Finally, reaction of CrCl3 with 3.5 equiv of 6 results in formation of the [Cr2]6+ dimer, [Li][Cr2(N═C10H14)7] (7), which can be isolated in modest yield after work-up. Complex 7 features a Cr-Cr bond length of 2.653(2) Å. Additionally, solid-state magnetic susceptibility measurements reveal strong antiferromagnetic coupling between the two Cr centers, with J = -200 cm-1.
Collapse
Affiliation(s)
- Greggory T Kent
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Andrew W Cook
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Peter L Damon
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Richard A Lewis
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Trevor W Hayton
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| |
Collapse
|
5
|
Lee KF, Yang T, Tsang LY, Sung HHY, Williams ID, Lin Z, Jia G. Azavinylidene Complexes from Coupling Reactions of Organonitriles with Phosphines. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00704] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kui-Fun Lee
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Tilong Yang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Long-Yiu Tsang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Herman H. Y. Sung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Ian D. Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Guochen Jia
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| |
Collapse
|
6
|
Khononov M, Fridman N, Tamm M, Eisen MS. Hydroboration of Aldehydes, Ketones, and Carbodiimides Promoted by Mono(imidazolin‐2‐iminato) Hafnium Complexes. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901750] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Maxim Khononov
- Schulich Faculty of Chemistry TechnionIsrael Institute of Technology 32000 Haifa City Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry TechnionIsrael Institute of Technology 32000 Haifa City Israel
| | - Matthias Tamm
- Institut fürAnorganische und Analytische Chemie Technische Universität Braunschweig Hagenring 30 38106 Braunschweig Germany
| | - Moris S. Eisen
- Schulich Faculty of Chemistry TechnionIsrael Institute of Technology 32000 Haifa City Israel
| |
Collapse
|
7
|
Kulyabin PS, Goryunov GP, Mladentsev DY, Uborsky DV, Voskoboynikov AZ, Canich JAM, Hagadorn JR. Reactivity of
C
1
‐Symmetric Heteroarylamido Hafnium Complexes towards Unsaturated Electrophilic Molecules: Development of New Families of Olefin Polymerization Catalysts. Chemistry 2019; 25:10478-10489. [DOI: 10.1002/chem.201901899] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 05/29/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Pavel S. Kulyabin
- Department of ChemistryM. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Georgy P. Goryunov
- Department of ChemistryM. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Dmitry Y. Mladentsev
- Department of ChemistryM. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Dmitry V. Uborsky
- Department of ChemistryM. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Alexander Z. Voskoboynikov
- Department of ChemistryM. V. Lomonosov Moscow State University Leninskie Gory, 1/3 Moscow 119991 Russian Federation
| | - Jo Ann M. Canich
- Baytown Technology and Engineering ComplexExxonMobil Chemical Company Baytown TX 77520 USA
| | - John R. Hagadorn
- Baytown Technology and Engineering ComplexExxonMobil Chemical Company Baytown TX 77520 USA
| |
Collapse
|
8
|
Oswald T, Fischer M, Struckmann N, Schmidtmann M, Beckhaus R. Reaction of Pentafulvene Titanium and Zirconium Complexes with Phosphorus Ylides: Stoichiometric Reactions and Catalytic Intramolecular Proton Shuttles. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00831] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tim Oswald
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Malte Fischer
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Niclas Struckmann
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Marc Schmidtmann
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Rüdiger Beckhaus
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| |
Collapse
|
9
|
Varga V, Večeřa M, Gyepes R, Pinkas J, Horáček M, Merna J, Lamač M. Effects of the Linking of Cyclopentadienyl and Ketimide Ligands in Titanium Half-Sandwich Olefin Polymerization Catalysts. ChemCatChem 2017. [DOI: 10.1002/cctc.201700498] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Vojtech Varga
- J. Heyrovský Institute of Physical Chemistry; The Czech Academy of Sciences, v.v.i.; Dolejškova 2155/3 18223 Prague 8 Czech Republic
| | - Miloš Večeřa
- J. Heyrovský Institute of Physical Chemistry; The Czech Academy of Sciences, v.v.i.; Dolejškova 2155/3 18223 Prague 8 Czech Republic
| | - Róbert Gyepes
- J. Heyrovský Institute of Physical Chemistry; The Czech Academy of Sciences, v.v.i.; Dolejškova 2155/3 18223 Prague 8 Czech Republic
- Department of Inorganic Chemistry; Faculty of Science; Charles University in Prague; Hlavova 2030 12840 Prague 2 Czech Republic
| | - Jiří Pinkas
- J. Heyrovský Institute of Physical Chemistry; The Czech Academy of Sciences, v.v.i.; Dolejškova 2155/3 18223 Prague 8 Czech Republic
| | - Michal Horáček
- J. Heyrovský Institute of Physical Chemistry; The Czech Academy of Sciences, v.v.i.; Dolejškova 2155/3 18223 Prague 8 Czech Republic
| | - Jan Merna
- Department of Polymers; University of Chemistry and Technology Prague; Technická 5 166 28 Prague 6 Czech Republic
| | - Martin Lamač
- J. Heyrovský Institute of Physical Chemistry; The Czech Academy of Sciences, v.v.i.; Dolejškova 2155/3 18223 Prague 8 Czech Republic
| |
Collapse
|
10
|
Večeřa M, Gyepes R, Lamač M. Crystal structure of chlorido{[3-(η 5-cyclopenta-dienyl)-2,2,3-trimethyl-1-phenylbutylidene] azanido-κ N}[η 2( N, O)- N, N-dimethylhydroxylaminato]titanium(IV), C 20H 27ClN 2OTi. Z KRIST-NEW CRYST ST 2017. [DOI: 10.1515/ncrs-2016-0316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C20H27ClN2OTi, monoclinic, P21/c (no. 14), a = 9.4006(2) Å, b = 10.8185(3) Å, c = 19.4821(5) Å, β = 97.941(1)°, V = 1962.34(9) Å3, Z = 4, R
gt(F) = 0.0270, wR
ref(F
2) = 0.0731, T = 150(2) K.
Collapse
Affiliation(s)
- Miloš Večeřa
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences , Dolejškova 2155/3 , 18223 Prague 8 , Czech Republic
| | - Róbert Gyepes
- Department of Inorganic Chemistry, Faculty of Science , Charles University in Prague , Hlavova 2030 , 12840 Prague , Czech Republic
| | - Martin Lamač
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences , Dolejškova 2155/3 , 18223 Prague 8 , Czech Republic
| |
Collapse
|