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Korb M, Lang H. Rearrangements and Migrations along the Ferrocene Periphery: On the Way to Planar‐Chiral and (Multi)Substitution Patterns. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100946] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marcus Korb
- The University of Western Australia School of Molecular Sciences 35 Stirling Highway Crawley Perth WA 6009 Australia
| | - Heinrich Lang
- Technische Universität Chemnitz Faculty of Sciences Institute of Chemistry Inorganic Chemistry 09107 Chemnitz Germany
- MAIN Research Center Rosenbergstraße 6 09126 Chemnitz Germany
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Speck JM, Korb M, Hildebrandt A, Lang H. Synthesis and Electrochemical Investigations of [Ru(η
5
‐Ferrocenyl‐Thiophene)(η
5
‐C
5
R
5
)]
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Sandwich Compounds. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- J. Matthäus Speck
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
| | - Marcus Korb
- University of Western Australia School of Molecular Sciences, M310 6009 Perth WA Australia
| | - Alexander Hildebrandt
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
| | - Heinrich Lang
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie, Anorganische Chemie 09107 Chemnitz Germany
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Affiliation(s)
- J. Matthäus Speck
- Department of Inorganic Chemistry Faculty of Natural Sciences Technische Universität Chemnitz 09107 Chemnitz Germany
| | - Marcus Korb
- Department of Inorganic Chemistry Faculty of Natural Sciences Technische Universität Chemnitz 09107 Chemnitz Germany
| | - Alexander Hildebrandt
- Department of Inorganic Chemistry Faculty of Natural Sciences Technische Universität Chemnitz 09107 Chemnitz Germany
| | - Heinrich Lang
- Department of Inorganic Chemistry Faculty of Natural Sciences Technische Universität Chemnitz 09107 Chemnitz Germany
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Lamprecht Z, Radhakrishnan SG, Hildebrandt A, Lang H, Liles DC, Weststrate NA, Lotz S, Bezuidenhout DI. Mono-, di- and tetrarhenium Fischer carbene complexes with thienothiophene substituents. Dalton Trans 2017; 46:13983-13993. [PMID: 28975955 DOI: 10.1039/c7dt02969a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The oxidative cleaving of a rhenium-rhenium bond by bromine in binuclear Fischer carbene complexes proves to be an effective method to prepare mononuclear bromido-carbene complexes. The reaction of mono- and dilithiated thieno[2,3-b]thiophene (2,3-b-TTH2) and thieno[3,2-b]thiophene (3,2-b-TTH2) with [Re2(CO)10] affords dirhenium nonacarbonyl ethoxycarbene complexes, [Re2(CO)9{C(OEt)2,3-b-TTH}] (1a) and [Re2(CO)9{C(OEt)3,2-b-TTH}] (1b), and the tetrarhenium bis(ethoxycarbene) complexes from the dilithiated thiophene substrates, [Re2(CO)9-μ-{C(OEt)-2,3-b-TT-C(OEt)}Re2(CO)9] (2a) and [Re2(CO)9-μ-{C(OEt)-3,2-b-TT-C(OEt)}Re2(CO)9] (2b) featuring bridging thiophene linkers. Rhenium-rhenium bond cleavage by bromine of the monocarbene complexes yielded the scarce class of monorhenium bromido-carbene complexes, cis-[Re(CO)4{C(OEt)2,3-b-TTH}Br] (3a) and cis-[Re(CO)4{C(OEt)3,2-b-TTH}Br] (3b), while the corresponding reaction of the biscarbene tetrarhenium carbonyl complex of thieno[2,3-b]thiophene afforded the cleaving of both metal-metal bonds to give the novel dirhenium biscarbene dibromido complex with a thienothiophene spacer, [Re(CO)4Br-μ-{C(OEt)-2,3-b-TT-C(OEt)}Re(CO)4Br] (4a). A new indirect aminolysis route is described to prepare the chlorido dimethylaminocarbene complex 5acis-[Re(CO)4{C(NMe2)2,3-b-TTH}Cl], with unexpected cleavage of the Re-Re bond. Single crystal X-ray diffraction studies were performed on 1a, 2a, 3a, 5a, 1b and 3b. Spectroscopic and electrochemical methods are employed to investigate the electronic effect of the different conjugation pathways in the different thienothiophenyl carbene substituents, and the replacement of the rhenium pentacarbonyl fragment with a bromido ligand.
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Affiliation(s)
- Zandria Lamprecht
- Department of Chemistry, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa.
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Lehrich SW, Hildebrandt A, Korb M, Lang H. From diferrocenyl-cyclopropenone to diferrocenyl-cyclopropenylium cations and triferrocenylpropenones: An electrochemical study. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.03.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Taher D, Awwadi FF, Speck JM, Korb M, Schaarschmidt D, Weheabby S, Habashneh AY, Al-Noaimi M, El-Khateeb M, Abu-Orabi ST, Lang H. Heterocyclic-based ferrocenyl carboselenolates: Synthesis, solid-state structure and electrochemical investigations. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.02.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Aucamp D, Witteler T, Dielmann F, Siangwata S, Liles DC, Smith GS, Bezuidenhout DI. A Triarylated 1,2,3-Triazol-5-ylidene Ligand with a Redox-Active Ferrocenyl Substituent for Rhodium(I)-Catalyzed Hydroformylation of 1-Octene. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700164] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Danielle Aucamp
- Chemistry Department; University of Pretoria; Private Bag X20, Hatfield 0028 Pretoria South Africa
| | - Tim Witteler
- Institut für Anorganische und Analytische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstrasse 30 48149 Münster Germany
| | - Fabian Dielmann
- Institut für Anorganische und Analytische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstrasse 30 48149 Münster Germany
| | - Shepherd Siangwata
- Department of Chemistry; University of Cape Town; 7701 Rondebosch South Africa
| | - David C. Liles
- Chemistry Department; University of Pretoria; Private Bag X20, Hatfield 0028 Pretoria South Africa
| | - Gregory S. Smith
- Department of Chemistry; University of Cape Town; 7701 Rondebosch South Africa
| | - Daniela I. Bezuidenhout
- Chemistry Department; University of Pretoria; Private Bag X20, Hatfield 0028 Pretoria South Africa
- Molecular Sciences Institute; School of Chemistry; University of the Witwatersrand; 2050 Johannesburg South Africa
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Veit P, Förster C, Heinze K. On the mechanism of imine elimination from Fischer tungsten carbene complexes. Beilstein J Org Chem 2016; 12:1322-33. [PMID: 27559381 PMCID: PMC4979739 DOI: 10.3762/bjoc.12.125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 06/07/2016] [Indexed: 12/16/2022] Open
Abstract
(Aminoferrocenyl)(ferrocenyl)carbene(pentacarbonyl)tungsten(0) (CO)5W=C(NHFc)Fc (W(CO) 5 ( E -2)) is synthesized by nucleophilic substitution of the ethoxy group of (CO)5W=C(OEt)Fc (M(CO) 5 (1 (Et) )) by ferrocenyl amide Fc-NH(-) (Fc = ferrocenyl). W(CO) 5 ( E -2) thermally and photochemically eliminates bulky E-1,2-diferrocenylimine ( E -3) via a formal 1,2-H shift from the N to the carbene C atom. Kinetic and mechanistic studies to the formation of imine E -3 are performed by NMR, IR and UV-vis spectroscopy and liquid injection field desorption ionization (LIFDI) mass spectrometry as well as by trapping experiments for low-coordinate tungsten complexes with triphenylphosphane. W(CO) 5 ( E -2) decays thermally in a first-order rate-law with a Gibbs free energy of activation of ΔG (‡) 298K = 112 kJ mol(-1). Three proposed mechanistic pathways are taken into account and supported by detailed (time-dependent) densitiy functional theory [(TD)-DFT] calculations. The preferred pathway is initiated by an irreversible CO dissociation, followed by an oxidative addition/pseudorotation/reductive elimination pathway with short-lived, elusive seven-coordinate hydrido tungsten(II) intermediates cis (N,H)-W(CO) 4 (H)( Z -15) and cis (C,H)-W(CO) 4 (H)( Z -15).
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Affiliation(s)
- Philipp Veit
- Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Christoph Förster
- Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Katja Heinze
- Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, 55128 Mainz, Germany
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Nemykin VN, Dudkin SV, Fathi-Rasekh M, Spaeth AD, Rhoda HM, Belosludov RV, Barybin MV. Probing Electronic Communications in Heterotrinuclear Fe–Ru–Fe Molecular Wires Formed by Ruthenium(II) Tetraphenylporphyrin and Isocyanoferrocene or 1,1′-Diisocyanoferrocene Ligands. Inorg Chem 2015; 54:10711-24. [DOI: 10.1021/acs.inorgchem.5b01614] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Victor N. Nemykin
- Department of Chemistry and Biochemistry, University of Minnesota, Duluth, 1039 University Drive, Duluth, Minnesota 55812, United States
| | - Semyon V. Dudkin
- Department of Chemistry and Biochemistry, University of Minnesota, Duluth, 1039 University Drive, Duluth, Minnesota 55812, United States
| | - Mahtab Fathi-Rasekh
- Department of Chemistry and Biochemistry, University of Minnesota, Duluth, 1039 University Drive, Duluth, Minnesota 55812, United States
| | - Andrew D. Spaeth
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Hannah M. Rhoda
- Department of Chemistry and Biochemistry, University of Minnesota, Duluth, 1039 University Drive, Duluth, Minnesota 55812, United States
| | | | - Mikhail V. Barybin
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
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Rhoda HM, Chanawanno K, King AJ, Zatsikha YV, Ziegler CJ, Nemykin VN. Unusually Strong Long-Distance Metal-Metal Coupling in Bis(ferrocene)-Containing BOPHY: An Introduction to Organometallic BOPHYs. Chemistry 2015; 21:18043-6. [DOI: 10.1002/chem.201504004] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Indexed: 12/13/2022]
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Speck JM, Korb M, Schade A, Spange S, Lang H. Ferrocenes Bridged by Ethylenediamino Thiophene: Varying Charge Transfer Properties in a Series of 3,4-Di-N-substituted 2,5-Diferrocenyl Thiophenes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00450] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Matthäus Speck
- Technische Universität Chemnitz, Fakultät
für Naturwissenschaften, Institut für Chemie, Anorganische
Chemie, D-09107 Chemnitz, Germany
| | - Marcus Korb
- Technische Universität Chemnitz, Fakultät
für Naturwissenschaften, Institut für Chemie, Anorganische
Chemie, D-09107 Chemnitz, Germany
| | - Alexander Schade
- Technische Universität Chemnitz, Fakultät
für Naturwissenschaften, Institut für Chemie, Polymerchemie, D-09107 Chemnitz, Germany
| | - Stefan Spange
- Technische Universität Chemnitz, Fakultät
für Naturwissenschaften, Institut für Chemie, Polymerchemie, D-09107 Chemnitz, Germany
| | - Heinrich Lang
- Technische Universität Chemnitz, Fakultät
für Naturwissenschaften, Institut für Chemie, Anorganische
Chemie, D-09107 Chemnitz, Germany
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