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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.
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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
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2
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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.
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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
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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
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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
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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.
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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
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Večeřa M, Varga V, Císařová I, Pinkas J, Kucharczyk P, Sedlařík V, Lamač M. Group 4 Metal Complexes of Chelating Cyclopentadienyl-ketimide Ligands. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Miloš Večeřa
- 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
| | - Vojtech Varga
- J.
Heyrovský Institute of Physical Chemistry, The Czech Academy of Sciences, v.v.i., Dolejškova 2155/3, 18223 Prague 8, Czech Republic
| | - Ivana Císařová
- 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
| | - Pavel Kucharczyk
- Centre
of Polymer Systems, University Institute, Tomáš Bat’a University in Zlín, tř. T. Bati 5678, 76001 Zlín, Czech Republic
| | - Vladimír Sedlařík
- Centre
of Polymer Systems, University Institute, Tomáš Bat’a University in Zlín, tř. T. Bati 5678, 76001 Zlín, 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
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Wang M, Wang D, Widmann L, Frey W, Buchmeiser MR. Tandem vinyl insertion-/ring-opening metathesis copolymerization with ansa-6-[2-(dimesitylboryl)-phenyl]pyrid-2-ylamido zirconium complexes: role of trialkylaluminum and MAO. Polym Chem 2016. [DOI: 10.1039/c6py00078a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Activation of Zr-bisalkyl complexes containing the η5-tetramethylcyclopentadienyl-6-[2-(dimesitylboryl)phenyl]pyrid-2-ylamido motif with MAO offers access to poly(ethylene)-co-poly(norbornene) with ROMP-derived sequences.
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Affiliation(s)
- Min Wang
- Lehrstuhl für Makromolekulare Stoffe und Faserchemie
- Institut für Polymerchemie
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - Dongren Wang
- Lehrstuhl für Makromolekulare Stoffe und Faserchemie
- Institut für Polymerchemie
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - Laura Widmann
- Lehrstuhl für Makromolekulare Stoffe und Faserchemie
- Institut für Polymerchemie
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - Wolfgang Frey
- Institut für Organische Chemie
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - Michael R. Buchmeiser
- Lehrstuhl für Makromolekulare Stoffe und Faserchemie
- Institut für Polymerchemie
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
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9
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Pinkas J, Lamač M. Transformations of functional groups attached to cyclopentadienyl or related ligands in group 4 metal complexes. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.03.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Highly substituted zirconium and hafnium cyclopentadienyl bifunctional β-diketiminate complexes – Synthesis, structure, and catalytic activity towards ethylene polymerization. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.03.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Strašák T, Sýkora J, Lamač M, Kubišta J, Horáček M, Gyepes R, Pinkas J. Reactivity of a Titanocene Pendant Si–H Group toward Alcohols. Unexpected Formation of Siloxanes from the Reaction of Hydrosilanes and Ph3COH Catalyzed by B(C6F5)3. Organometallics 2013. [DOI: 10.1021/om400253g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tomáš Strašák
- Institute
of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, v.v.i., Rozvojová
135, 165 02 Prague 6, Czech Republic
| | - Jan Sýkora
- Institute
of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, v.v.i., Rozvojová
135, 165 02 Prague 6, Czech Republic
| | - Martin Lamač
- J. Heyrovský Institute
of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 2155/3,
182 23 Prague 8, Czech Republic
| | - Jiří Kubišta
- J. Heyrovský Institute
of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 2155/3,
182 23 Prague 8, Czech Republic
| | - Michal Horáček
- J. Heyrovský Institute
of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 2155/3,
182 23 Prague 8, Czech Republic
| | - Róbert Gyepes
- J. Heyrovský Institute
of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 2155/3,
182 23 Prague 8, Czech Republic
- J. Selye University, Faculty of Education, Bratislavská
cesta 3322, 945 01 Komárno, Slovak Republic
| | - Jiří Pinkas
- J. Heyrovský Institute
of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 2155/3,
182 23 Prague 8, Czech Republic
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12
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Thiel I, Lamač M, Jiao H, Spannenberg A, Hapke M. Synthesis and Catalytic Activity of [Cp′Co(COD)] Complexes Bearing Pendant N-Containing Groups. Organometallics 2013. [DOI: 10.1021/om400330x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Indre Thiel
- Leibniz-Institut für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
| | - Martin Lamač
- J. Heyrovský Institute
of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic,
Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - Haijun Jiao
- Leibniz-Institut für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
| | - Marko Hapke
- Leibniz-Institut für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
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