1
|
Rathke P, Rittle J. Four-Electron Oxidative Addition of an N=N Double Bond at a Chromium Metallocyclopropene. Angew Chem Int Ed Engl 2023; 62:e202310482. [PMID: 37656893 DOI: 10.1002/anie.202310482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/03/2023]
Abstract
This report describes the synthesis of a pseudo-tetrahedral chromium alkyne complex supported by a bidentate phosphinimide ligand and its reactivity with an azobenzene derivative. Characterization of the former by structural and computational methods reveals an unprecedented extent of alkyne activation by a formal chromium(II) center, suggesting that this complex is best described as a chromium(IV)-metallocyclopropene. Exposure of this compound to 4,4'-difluoroazobenzene results in the formation of a chromium(VI) diimido complex, which constitutes a rare 4-electron oxidative addition of an N=N double bond. The isolation of a chromium(IV)-hydrazido intermediate enabled mechanistic investigations of this challenging bond cleavage process. This work substantiates the notion that terminal phosphinimide ligands can engender first-row transition metal ions with exceptional reactivity.
Collapse
Affiliation(s)
- Paul Rathke
- College of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA
| | - Jonathan Rittle
- College of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA
| |
Collapse
|
2
|
Nukazawa T, Iwamoto T. π-Conjugated species with an unsupported Si-Si π-bond obtained from direct π-extension. Chem Commun (Camb) 2021; 57:9692-9695. [PMID: 34555142 DOI: 10.1039/d1cc04332c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,3-Diethynylbicyclo[1.1.0]tetrasilanes that contain an unsupported bridgehead Si-Si π-bond and ethynyl π-moieties were synthesized by the reaction of a 1,3-dihalobicyclo[1.1.0]tetrasilane with the corresponding lithium acetylide. The substantial bathochromic shift of the longest-wavelength absorption band observed for the phenylethynyl-substituted bicyclo[1.1.0]tetrasilane in the solid state compared to that of the octynyl-substituted derivative suggested the presence of effective π-conjugation between the unsupported Si-Si π and ethynyl π units.
Collapse
Affiliation(s)
- Takumi Nukazawa
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan.
| | - Takeaki Iwamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan.
| |
Collapse
|
3
|
Müller I, Munz D, Werncke CG. Reactions of Alkynes with Quasi-Linear 3d Metal(I) Silylamides of Chromium to Cobalt: A Comparative Study. Inorg Chem 2020; 59:9521-9537. [DOI: 10.1021/acs.inorgchem.0c00365] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Igor Müller
- Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Dominik Munz
- Inorganic Chemistry: Coordination Chemistry, Saarland University, 66123 Saarbrücken Germany
- Inorganic and General Chemistry, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - C. Gunnar Werncke
- Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| |
Collapse
|
4
|
Fischer M, Vincent-Heldt L, Hillje M, Schmidtmann M, Beckhaus R. Synthesis of a titanium ethylene complex via C–H-activation and alternative access to Cp2Ti(η2-Me3SiC2SiMe3). Dalton Trans 2020; 49:2068-2072. [DOI: 10.1039/d0dt00237b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of a room temperature stable titanacyclopropane in a one-step-two-transformation protocol is presented. Additionally, a novel one-pot procedure toward Cp2Ti(η2-Me3SiC2SiMe3) was subsequently developed.
Collapse
Affiliation(s)
- Malte Fischer
- Institut für Chemie
- Fakultät für Mathematik und Naturwissenschaften
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg
- Germany
| | - Lisa Vincent-Heldt
- Institut für Chemie
- Fakultät für Mathematik und Naturwissenschaften
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg
- Germany
| | - Malena Hillje
- Institut für Chemie
- Fakultät für Mathematik und Naturwissenschaften
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg
- Germany
| | - Marc Schmidtmann
- Institut für Chemie
- Fakultät für Mathematik und Naturwissenschaften
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg
- Germany
| | - Ruediger Beckhaus
- Institut für Chemie
- Fakultät für Mathematik und Naturwissenschaften
- Carl von Ossietzky Universität Oldenburg
- 26111 Oldenburg
- Germany
| |
Collapse
|
5
|
Reiß F, Reiß M, Spannenberg A, Jiao H, Hollmann D, Arndt P, Rosenthal U, Beweries T. Titanocene Silylpropyne Complexes: Promising Intermediates en route to a Four-Membered 1-Metallacyclobuta-2,3-diene? Chemistry 2017; 23:14158-14162. [PMID: 28846172 DOI: 10.1002/chem.201703444] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Indexed: 11/10/2022]
Abstract
Coordination of the alkyl-substituted alkynes Me3 SiC2 CH2 R (1: R=SiMe3 ; 2: R=N(SiMe3 )2 ) to titanocene centres [Cp'2 Ti] (Cp'=Cp, Cp*) yields stable alkyne complexes of the type Cp'2 Ti(η2 -Me3 SiC2 CH2 R) (3: Cp'=Cp, R=SiMe3 ; 5: Cp'=Cp, R=N(SiMe3 )2 ; 6: Cp'=Cp*, R=SiMe3 ) that are not prone to alkyne/allene isomerisation. When reacting alkyne 2 with Cp*2 TiCl2 and Mg formation of the complex Cp*2 Ti(III)(η3 -Me3 SiC2 CH2 ) (7) which displays a propargylic unit coordinated to the TiIII centre takes place. All complexes were fully characterised, the molecular structures for 5, 6, and 7 are discussed.
Collapse
Affiliation(s)
- Fabian Reiß
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Melanie Reiß
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Dirk Hollmann
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Perdita Arndt
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Uwe Rosenthal
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Torsten Beweries
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| |
Collapse
|
6
|
Weisheim E, Schwartzen A, Kuhlmann L, Neumann B, Stammler HG, Mitzel NW. Tridentate Lewis Acids: Boron-, Silicon- and Gallium-Functionalised Tris(dimethylsilyl)methanes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501432] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
7
|
Altenburger K, Arndt P, Spannenberg A, Baumann W, Rosenthal U. Synthesis and Characterisation of Selected Group 4 Metallocene Complexes with 1,2-Bis(4′,4′,5′,5′-tetramethyl[1′,3′,2′]dioxaborolan-2′-yl)acetylene. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300236] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
8
|
Kaleta K, Kessler M, Beweries T, Arndt P, Spannenberg A, Rosenthal U. Different Inertness of Titanocene [Cp
2
Ti] and Decamethyltitanocene [Cp*
2
Ti] in Reactions with
N
,
N
‐Bis(trimethylsilyl)sulfurdiimide – Elimination of Tetramethylfulvene and Formation of Half‐Titanocene Complexes. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200242] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Katharina Kaleta
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Monty Kessler
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Torsten Beweries
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Perdita Arndt
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Anke Spannenberg
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Uwe Rosenthal
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| |
Collapse
|
9
|
Raza Shah M, Ng SW. (Butane-1,3-diyne-1,4-diyl)bis-(tri-isopropyl-silane). Acta Crystallogr Sect E Struct Rep Online 2010; 66:o2028. [PMID: 21588338 PMCID: PMC3007236 DOI: 10.1107/s160053681002725x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Accepted: 07/09/2010] [Indexed: 05/30/2023]
Abstract
The mol-ecule of the title compound, C(22)H(42)Si(2), lies on a center of inversion, and the triisopropyl-silyl groups are staggered.
Collapse
Affiliation(s)
- Muhammad Raza Shah
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Seik Weng Ng
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
| |
Collapse
|
10
|
Sato T, Mizuhata Y, Tokitoh N. 1,2-Dialkynyldisilenes: silicon analogues of (E)-enediyne. Chem Commun (Camb) 2010; 46:4402-4. [PMID: 20467675 DOI: 10.1039/c0cc00406e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reductions of bulky alkynyl-substituted dihalosilanes, BbtSiX(2)(C[triple bond]CR) (Bbt = 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl, R = SiMe(3) or Ph groups, X = halogen), with 2.0 equiv. of lithium naphthalenide gave the first stable 1,2-dialkynyl-substituted disilenes, which constituted extended pi-conjugated systems between Si=Si bond and ethynylene units.
Collapse
Affiliation(s)
- Takahiro Sato
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | | | | |
Collapse
|
11
|
1-Zircona-2,5-disilacyclopent-3-in: ein Zirconocen-koordiniertes 1,4-Disilabutatrien? Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
12
|
Lamač M, Spannenberg A, Jiao H, Hansen S, Baumann W, Arndt P, Rosenthal U. Formation of a 1-Zircona-2,5-disilacyclopent-3-yne: Coordination of 1,4-Disilabutatriene to Zirconocene? Angew Chem Int Ed Engl 2010; 49:2937-40. [DOI: 10.1002/anie.201000021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Indexed: 11/11/2022]
|
13
|
Arndt P, Burlakov VV, Spannenberg A, Rosenthal U. Synthesis of decamethyltitanocene alkyne complexes and molecular structure of the diphenylacetylene complex. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2007.03.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
14
|
Beweries T, Burlakov VV, Bach MA, Arndt P, Baumann W, Spannenberg A, Rosenthal U. Complexation of Bis(trimethylsilyl)acetylene by Decamethylhafnocene To Give the Hafnacyclopropene Cp*2Hf(η2-Me3SiC2SiMe3): An Unusually Strong Metal−Alkyne Interaction. Organometallics 2006. [DOI: 10.1021/om0609259] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Torsten Beweries
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Vladimir V. Burlakov
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Marc A. Bach
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Perdita Arndt
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Wolfgang Baumann
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Uwe Rosenthal
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| |
Collapse
|
15
|
Kunkely H, Vogler A. Excited state properties of bis(trimethylsilyl)acetylenecopper(I) hexafluoroacetylacetonate. Emission and photodissociation induced by metal-to-ligand charge transfer excitation. INORG CHEM COMMUN 2003. [DOI: 10.1016/s1387-7003(03)00036-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
16
|
Rosenthal U, Burlakov VV, Arndt P, Baumann W, Spannenberg A. The Titanocene Complex of Bis(trimethylsilyl)acetylene: Synthesis, Structure, and Chemistry. Organometallics 2003. [DOI: 10.1021/om0208570] [Citation(s) in RCA: 214] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Uwe Rosenthal
- Leibniz-Institut für Organische Katalyse an der Universität Rostock e.V., Buchbinderstrasse 5-6, D-18055 Rostock, Germany
| | - Vladimir V. Burlakov
- Leibniz-Institut für Organische Katalyse an der Universität Rostock e.V., Buchbinderstrasse 5-6, D-18055 Rostock, Germany
| | - Perdita Arndt
- Leibniz-Institut für Organische Katalyse an der Universität Rostock e.V., Buchbinderstrasse 5-6, D-18055 Rostock, Germany
| | - Wolfgang Baumann
- Leibniz-Institut für Organische Katalyse an der Universität Rostock e.V., Buchbinderstrasse 5-6, D-18055 Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für Organische Katalyse an der Universität Rostock e.V., Buchbinderstrasse 5-6, D-18055 Rostock, Germany
| |
Collapse
|
17
|
Titanium σ-acetylides as building blocks for heterobimetallic transition metal complexes: synthesis and redox behaviour of π-conjugated organometallic systems. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(98)01068-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|