1
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Ludwig M, Franz D, Espinosa Ferao A, Bolte M, Hanusch F, Inoue S. Anions featuring an aluminium-silicon core with alumanyl silanide and aluminata-silene characteristics. Nat Chem 2023; 15:1452-1460. [PMID: 37400594 DOI: 10.1038/s41557-023-01265-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 06/05/2023] [Indexed: 07/05/2023]
Abstract
Molecular species containing multiple bonds to aluminium have long been challenging synthetic targets. Despite recent landmark discoveries in this area, heterodinuclear Al-E multiple bonds (where E is a group-14 element) have remained rare and limited to highly polarized π-interactions (Al=E ↔ +Al-E-). Here we report the isolation of three alumanyl silanide anions that feature an Al-Si core stabilized by bulky substituents and a Si-Na interaction. Single-crystal X-ray diffraction studies, spectroscopic analysis and density functional theory calculations show that the Al-Si interaction possesses partial double bond character. Preliminary reactivity studies support this description of the compounds through two resonance structures: one that displays a predominant nucleophilic character of the sodium-coordinated silicon centre in the Al-Si core, as shown by silanide-like reactivity towards halosilane electrophiles and the CH-insertion of phenylacetylene. Moreover, we report an alumanyl silanide with a sequestered sodium cation. Cleavage of the Si-Na bond by [2.2.2]cryptand increases the double bond character of the Al-Si core to produce an anion with high aluminata-silene (-Al=Si) character.
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Affiliation(s)
- Moritz Ludwig
- TUM School of Natural Sciences, Department of Chemistry, Catalysis Research Center and Institute of Silicon Chemistry, Technical University of Munich, Garching bei München, Germany
| | - Daniel Franz
- TUM School of Natural Sciences, Department of Chemistry, Catalysis Research Center and Institute of Silicon Chemistry, Technical University of Munich, Garching bei München, Germany
| | - Arturo Espinosa Ferao
- Departamento de Química Orgánica, Facultad de Química, Universidad de Murcia, Murcia, Spain
| | - Michael Bolte
- Institute for Inorganic and Analytical Chemistry, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Franziska Hanusch
- TUM School of Natural Sciences, Department of Chemistry, Catalysis Research Center and Institute of Silicon Chemistry, Technical University of Munich, Garching bei München, Germany
| | - Shigeyoshi Inoue
- TUM School of Natural Sciences, Department of Chemistry, Catalysis Research Center and Institute of Silicon Chemistry, Technical University of Munich, Garching bei München, Germany.
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2
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Iwamoto T, Yin D, Kobayashi A, Tamura M, Motomatsu D, Akasaka N, Yokouchi Y, Ishida S, Kira M. Lithiated 1,3-Disilabicyclo[1.1.0]butanes Synthesized via Selective Cleavage of Exocyclic Si–Si Bonds on Bridgehead Silicon Atoms. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Takeaki Iwamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Dongzhu Yin
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Akifumi Kobayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Makoto Tamura
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Daiki Motomatsu
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Naohiko Akasaka
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Yuki Yokouchi
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Shintaro Ishida
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Mitsuo Kira
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
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3
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Lainer T, Pillinger M, Fischer RC, Jones C, Haas M. New Strategies towards Bulky Bis(alkyl)‐ and Bis(silyl)‐ Substituted Polysilanes as Precursor Molecules for Desilylation and Dechlorination Experiments. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Thomas Lainer
- Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9 8010 Graz Austria
| | - Michael Pillinger
- Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9 8010 Graz Austria
| | - Roland C. Fischer
- Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9 8010 Graz Austria
| | - Cameron Jones
- School of Chemistry Monash University PO Box 23, Clayton VIC, 3800 Australia
| | - Michael Haas
- Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9 8010 Graz Austria
- School of Chemistry Monash University PO Box 23, Clayton VIC, 3800 Australia
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4
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Du J, Balázs G, Wooles AJ, Scheer M, Liddle ST. The “Hidden” Reductive [2+2+1]‐Cycloaddition Chemistry of 2‐Phosphaethynolate Revealed by Reduction of a Th‐OCP Linkage. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jingzhen Du
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Gábor Balázs
- Institute of Inorganic Chemistry University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Ashley J. Wooles
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Manfred Scheer
- Institute of Inorganic Chemistry University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Stephen T. Liddle
- Department of Chemistry The University of Manchester Oxford Road Manchester M13 9PL UK
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5
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Du J, Balázs G, Wooles AJ, Scheer M, Liddle ST. The "Hidden" Reductive [2+2+1]-Cycloaddition Chemistry of 2-Phosphaethynolate Revealed by Reduction of a Th-OCP Linkage. Angew Chem Int Ed Engl 2021; 60:1197-1202. [PMID: 33051949 PMCID: PMC7839465 DOI: 10.1002/anie.202012506] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Indexed: 11/27/2022]
Abstract
The reduction chemistry of the newly emerging 2‐phosphaethynolate (OCP)− is not well explored, and many unanswered questions remain about this ligand in this context. We report that reduction of [Th(TrenTIPS)(OCP)] (2, TrenTIPS=[N(CH2CH2NSiPri3)]3−), with RbC8 via [2+2+1] cycloaddition, produces an unprecedented hexathorium complex [{Th(TrenTIPS)}6(μ‐OC2P3)2(μ‐OC2P3H)2Rb4] (5) featuring four five‐membered [C2P3] phosphorus heterocycles, which can be converted to a rare oxo complex [{Th(TrenTIPS)(μ‐ORb)}2] (6) and the known cyclometallated complex [Th{N(CH2CH2NSiPri3)2(CH2CH2SiPri2CHMeCH2)}] (4) by thermolysis; thereby, providing an unprecedented example of reductive cycloaddition reactivity in the chemistry of 2‐phosphaethynolate. This has permitted us to isolate intermediates that might normally remain unseen. We have debunked an erroneous assumption of a concerted fragmentation process for (OCP)−, rather than cycloaddition products that then decompose with [Th(TrenTIPS)O]− essentially acting as a protecting then leaving group. In contrast, when KC8 or CsC8 were used the phosphinidiide C−H bond activation product [{Th(TrenTIPS)}Th{N(CH2CH2NSiPri3)2[CH2CH2SiPri2CH(Me)CH2C(O)μ‐P]}] (3) and the oxo complex [{Th(TrenTIPS)(μ‐OCs)}2] (7) were isolated.
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Affiliation(s)
- Jingzhen Du
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Gábor Balázs
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Ashley J Wooles
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Stephen T Liddle
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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6
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Lainer T, Leypold M, Kugler C, Fischer RC, Haas M. Dodecamethoxyneopentasilane as a New Building Block for Defined Silicon Frameworks. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001112] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thomas Lainer
- Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
| | - Mario Leypold
- Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
| | - Christoph Kugler
- Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
| | - Roland C. Fischer
- Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
| | - Michael Haas
- Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria
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7
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Chapple PM, Kahlal S, Cartron J, Roisnel T, Dorcet V, Cordier M, Saillard J, Carpentier J, Sarazin Y. Bis(imino)carbazolate: A Master Key for Barium Chemistry. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001439] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Samia Kahlal
- Univ Rennes CNRS, ISCR-UMR 6226 35000 Rennes France
| | | | | | | | | | | | | | - Yann Sarazin
- Univ Rennes CNRS, ISCR-UMR 6226 35000 Rennes France
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8
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Chapple PM, Kahlal S, Cartron J, Roisnel T, Dorcet V, Cordier M, Saillard J, Carpentier J, Sarazin Y. Bis(imino)carbazolate: A Master Key for Barium Chemistry. Angew Chem Int Ed Engl 2020; 59:9120-9126. [DOI: 10.1002/anie.202001439] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Indexed: 01/14/2023]
Affiliation(s)
| | - Samia Kahlal
- Univ Rennes CNRS, ISCR-UMR 6226 35000 Rennes France
| | | | | | | | | | | | | | - Yann Sarazin
- Univ Rennes CNRS, ISCR-UMR 6226 35000 Rennes France
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9
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Holzner R, Reiter D, Frisch P, Inoue S. DMAP-stabilized bis(silyl)silylenes as versatile synthons for organosilicon compounds. RSC Adv 2020; 10:3402-3406. [PMID: 35497772 PMCID: PMC9048797 DOI: 10.1039/c9ra10628f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 01/06/2020] [Indexed: 01/19/2023] Open
Abstract
DMAP-stabilized silylenes 1a–c are obtained from the reductive debromination of the corresponding dibromosilanes in the presence of DMAP. Their distinctly different thermal isomerization reactions via C–H bond activation, dearomative ring expansion and silyl migration are discussed. Furthermore, complexes 1 dissociate at elevated temperatures, providing the corresponding free silylenes in situ, which are even capable of single-site activation of H2. Additionally, a potassium-substituted silicon-centered radical 2 is isolated from overreduction of (tBu3Si)2SiBr2. DMAP-stabilized silylenes 1a–c, which are convenient, room temperature stable synthetic equivalents for the corresponding highly reactive free bis(silyl)silylenes are reported.![]()
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Affiliation(s)
- Richard Holzner
- Department of Chemistry
- WACKER-Institute of Silicon Chemistry and Catalysis Research Center
- 85748 Garching bei München
- Germany
| | - Dominik Reiter
- Department of Chemistry
- WACKER-Institute of Silicon Chemistry and Catalysis Research Center
- 85748 Garching bei München
- Germany
| | - Philipp Frisch
- Department of Chemistry
- WACKER-Institute of Silicon Chemistry and Catalysis Research Center
- 85748 Garching bei München
- Germany
| | - Shigeyoshi Inoue
- Department of Chemistry
- WACKER-Institute of Silicon Chemistry and Catalysis Research Center
- 85748 Garching bei München
- Germany
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10
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Ballmann G, Rösch B, Harder S. Stabilization of Heteroleptic Heavier Alkaline Earth Metal Complexes with an Encapsulating Dipyrromethene Ligand. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900743] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Gerd Ballmann
- Inorganic and Organometallic Chemistry Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Bastian Rösch
- Inorganic and Organometallic Chemistry Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Sjoerd Harder
- Inorganic and Organometallic Chemistry Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Egerlandstraße 1 91058 Erlangen Germany
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11
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Reiter D, Holzner R, Porzelt A, Altmann PJ, Frisch P, Inoue S. Disilene–Silylene Interconversion: A Synthetically Accessible Acyclic Bis(silyl)silylene. J Am Chem Soc 2019; 141:13536-13546. [DOI: 10.1021/jacs.9b05318] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Dominik Reiter
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching bei München, Germany
| | - Richard Holzner
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching bei München, Germany
| | - Amelie Porzelt
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching bei München, Germany
| | - Philipp J. Altmann
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching bei München, Germany
| | - Philipp Frisch
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching bei München, Germany
| | - Shigeyoshi Inoue
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748 Garching bei München, Germany
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12
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Bisai MK, Swamy VSVSN, Das T, Vanka K, Gonnade RG, Sen SS. Synthesis and Reactivity of a Hypersilylsilylene. Inorg Chem 2019; 58:10536-10542. [PMID: 31017406 DOI: 10.1021/acs.inorgchem.9b00418] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stabilization of an amidinatosilylene with a bulky tris(trimethylsilyl)silyl substituent was realized with the preparation of PhC(NtBu)2Si{Si(SiMe3)3} (1) from PhC(NtBu)2SiHCl2 with K{Si(SiMe3)3} in more than 90% yield. The highly deshielded 29Si NMR resonance (δ = 76.91 ppm) can be attributed to the absence of a π-donating substituent. The molecular structure of 1 shows a trigonal-planar geometry around the SiII center with a SiII-SiIV bond length of 2.4339(13) Å. A series of reactions of 1 with Me3NO, S, Se, and Te were performed. While siloxane derivatives (2 and 3) are obtained from reactions with Me3NO, silachalcogenones (4-6) are formed with other chalcogens. The presence of Si═E (E = S, Se, and Te) bonds in 4-6 have been confirmed by single-crystal X-ray studies. Silaoxirane (7) formation was observed when 1 was treated with acetone, demonstrating the importance of the tris(trimethylsilyl)silyl group to kinetically and thermodynamically protect the silaoxirane derivative with less bulky substituents on the C atom.
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Affiliation(s)
- Milan Kumar Bisai
- Academy of Scientific and Innovative Research , Ghaziabad 201002 , India
| | - V S V S N Swamy
- Academy of Scientific and Innovative Research , Ghaziabad 201002 , India
| | - Tamal Das
- Academy of Scientific and Innovative Research , Ghaziabad 201002 , India
| | - Kumar Vanka
- Academy of Scientific and Innovative Research , Ghaziabad 201002 , India
| | - Rajesh G Gonnade
- Academy of Scientific and Innovative Research , Ghaziabad 201002 , India
| | - Sakya S Sen
- Academy of Scientific and Innovative Research , Ghaziabad 201002 , India
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13
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Alig E, Georg I, Sänger I, Fink L, Wagner M, Lerner HW. Synthesis and structure of the donor-free potassium silanide K[SiPh 3]. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2019. [DOI: 10.1515/znb-2018-0254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe donor-free potassium silanide K[SiPh3] was prepared by the reaction of hexaphenyldisilane, Ph3Si–SiPh3, with potassium metal in benzene at room temperature. The solid-state structure, determined by powder X-ray diffraction consists of {K[SiPh3]}2units, which interact with adjacent dimers to form an infinite chain along the crystallographiccaxis (orthorhombic, space groupCmc21,Z=4). The structure features short contacts between the π system of the phenyl rings and the potassium atoms of neighbouring K[SiPh3] units.
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Affiliation(s)
- Edith Alig
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main , 60438 Frankfurt am Main , Germany
| | - Isabelle Georg
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main , 60438 Frankfurt am Main , Germany
| | - Inge Sänger
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main , 60438 Frankfurt am Main , Germany
| | - Lothar Fink
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main , 60438 Frankfurt am Main , Germany
| | - Matthias Wagner
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main , 60438 Frankfurt am Main , Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische Chemie, Goethe-Universität Frankfurt am Main , Max-von-Laue-Straße 7 , 60438 Frankfurt am Main , Germany , Fax: +49-69-79876329151
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14
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Affiliation(s)
- Jürgen Pahl
- Inorganic and Organometallic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Alexander Friedrich
- Inorganic and Organometallic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Holger Elsen
- Inorganic and Organometallic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Sjoerd Harder
- Inorganic and Organometallic Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
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15
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Sänger I, Gärtner M, Bolte M, Wagner M, Lerner HW. New Aspects with Regard to Silanide Chemistry in Particular Formation and Structure of the First Disilyl Sodate [K(Me2
SiO)7
][(t
Bu3
Si)2
MeSi-Na-SiMe(Sit
Bu3
)2
]. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800157] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Inge Sänger
- Institut für Anorganische Chemie; Goethe-Universität Frankfurt; Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
| | - Michael Gärtner
- Institut für Anorganische Chemie; Goethe-Universität Frankfurt; Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
| | - Michael Bolte
- Institut für Anorganische Chemie; Goethe-Universität Frankfurt; Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
| | - Matthias Wagner
- Institut für Anorganische Chemie; Goethe-Universität Frankfurt; Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische Chemie; Goethe-Universität Frankfurt; Max-von-Laue-Str. 7 60438 Frankfurt am Main Germany
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16
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Zitz R, Baumgartner J, Marschner C. Synthesis of Potassium Oligosilanides in Benzene. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rainer Zitz
- Institut für Anorganische Chemie Technische Universität Graz Stremayrgasse 9 8010 Graz Austria
| | - Judith Baumgartner
- Institut für Anorganische Chemie Technische Universität Graz Stremayrgasse 9 8010 Graz Austria
| | - Christoph Marschner
- Institut für Anorganische Chemie Technische Universität Graz Stremayrgasse 9 8010 Graz Austria
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17
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Teichmann J, Wagner M. Silicon chemistry in zero to three dimensions: from dichlorosilylene to silafullerane. Chem Commun (Camb) 2018; 54:1397-1412. [DOI: 10.1039/c7cc09063c] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As one of the simplest examples of functionalized Si(ii) species, the SiCl2/[SiCl3]− system is not only fundamentally interesting, but also an important starting point for the assembly of oligosilane chains, rings, and clusters.
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Affiliation(s)
- J. Teichmann
- Institut für Anorganische Chemie
- Goethe-Universität Frankfurt am Main
- 60438 Frankfurt am Main
- Germany
| | - M. Wagner
- Institut für Anorganische Chemie
- Goethe-Universität Frankfurt am Main
- 60438 Frankfurt am Main
- Germany
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18
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Olaru M, Hesse MF, Rychagova E, Ketkov S, Mebs S, Beckmann J. The Weakly Coordinating Tris(trichlorosilyl)silyl Anion. Angew Chem Int Ed Engl 2017; 56:16490-16494. [PMID: 29149501 DOI: 10.1002/anie.201710416] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Indexed: 11/11/2022]
Abstract
Closely following the procedure for the preparation of the base-stabilized dichlorosilylene complex NHCDipp ⋅SiCl2 reported by Roesky, Stalke, and co-workers (Angew. Chem. Int. Ed. 2009, 48, 5683-5686), a few crystals of the salt [NHCDipp -H⋅⋅⋅Cl⋅⋅⋅H-NHCDipp ]Si(SiCl3 )3 were isolated, aside from the reported byproduct [NHCDipp -H+ ⋅⋅⋅Cl- ], and characterized by X-ray crystallography (NHCDipp =N,N-di(2,6-diisopropylphenyl)imidazo-2-ylidene). They contain the weakly coordinating anion Si(SiCl3 )3- , which was also obtained in high yields upon deprotonation of the conjugate Brønsted acid HSi(SiCl3 )3 with NHCDipp or PMP (PMP=1,2,2,6,6-pentamethylpiperidine). The acidity of HSi(SiCl3 )3 was estimated by DFT calculations to be substantially higher than those of other H-silanes. Further DFT studies on the electronic structure of Si(SiCl3 )3- , including the electrostatic potential and the electron localizability, confirmed its low basicity and nucleophilicity compared with other silyl anions.
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Affiliation(s)
- Marian Olaru
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359, Bremen, Germany
| | - Maxie F Hesse
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359, Bremen, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Elena Rychagova
- G. A. Razuvaev Institute of Organometallic Chemistry RAS, 49 Tropinin St., 603950, Nizhny Novgorod, Russian Federation
| | - Sergey Ketkov
- G. A. Razuvaev Institute of Organometallic Chemistry RAS, 49 Tropinin St., 603950, Nizhny Novgorod, Russian Federation
| | - Stefan Mebs
- Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Jens Beckmann
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359, Bremen, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
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19
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Olaru M, Hesse MF, Rychagova E, Ketkov S, Mebs S, Beckmann J. Das schwach koordinierende Tris(trichlorsilyl)silyl-Anion. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710416] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Marian Olaru
- Institut für Anorganische Chemie und Kristallographie; Universität Bremen; Leobener Straße 7 28359 Bremen Deutschland
| | - Maxie F. Hesse
- Institut für Anorganische Chemie und Kristallographie; Universität Bremen; Leobener Straße 7 28359 Bremen Deutschland
- Institut für Chemie und Biochemie; Freie Universität Berlin; Fabeckstraße 34/36 14195 Berlin Deutschland
| | - Elena Rychagova
- G. A. Razuvaev Institute of Organometallic Chemistry RAS; 49 Tropinin St. 603950 Nizhny Novgorod Russische Föderation
| | - Sergey Ketkov
- G. A. Razuvaev Institute of Organometallic Chemistry RAS; 49 Tropinin St. 603950 Nizhny Novgorod Russische Föderation
| | - Stefan Mebs
- Institut für Experimentalphysik; Freie Universität Berlin; Arnimallee 14 14195 Berlin Deutschland
| | - Jens Beckmann
- Institut für Anorganische Chemie und Kristallographie; Universität Bremen; Leobener Straße 7 28359 Bremen Deutschland
- Institut für Chemie und Biochemie; Freie Universität Berlin; Fabeckstraße 34/36 14195 Berlin Deutschland
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20
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Thalangamaarachchige VD, Li H, Cordes DB, Unruh DK, Krempner C. Zwitterionic Alkali-Metal Silanides of Tripodal Ligand Geometry: Synthesis, Structure, and Lewis Acid–Base Chemistry. Inorg Chem 2017; 56:9869-9879. [DOI: 10.1021/acs.inorgchem.7b01227] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Hui Li
- Department of Chemistry & Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States
| | - David B. Cordes
- Department of Chemistry & Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States
| | - Daniel K. Unruh
- Department of Chemistry & Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States
| | - Clemens Krempner
- Department of Chemistry & Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States
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21
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Lampland NL, Pindwal A, Yan K, Ellern A, Sadow AD. Rare Earth and Main Group Metal Poly(hydrosilyl) Compounds. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00383] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicole L. Lampland
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Aradhana Pindwal
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - KaKing Yan
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Arkady Ellern
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Aaron D. Sadow
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
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22
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Zaeni A, Behrens U, Liebing P, Olbrich F, Edelmann FT. Preparative and structural investigation of crown ether adducts of potassium fluorenides. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.12.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Walewska M, Baumgartner J, Marschner C, Albers L, Müller T. Alkyne Addition and Insertion Reactions of [(Me 3 Si) 3 Si] 2 Ge⋅PMe 3. Chemistry 2016; 22:18512-18521. [PMID: 27862421 DOI: 10.1002/chem.201603317] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Indexed: 11/12/2022]
Abstract
Silylated germylene-PMe3 adducts exchange their phosphane moiety smoothly for an N-heterocyclic carbene or isocyanide species to form their respective base adducts. Reaction of the silylated germylene-PMe3 adducts with monosubstituted alkynes produce germylene adducts with the alkyne inserted into a Ge-Si bond. A computational study of this process provides evidence for the initial formation of a germirene, which rearranges to a vinylgermylene species. The thermodynamic driving force for this reaction is provided by subsequent adduct formation with PMe3 . Reaction of the PMe3 adduct of bis[(trimethylsilyl)silyl]germylene with disubstituted alkynes leads to the formation of stable germirenes, which can be isomerized further to silagermetes.
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Affiliation(s)
- Małgorzata Walewska
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, 8010, Graz, Austria
| | - Judith Baumgartner
- Institut für Chemie, Karl Franzens Universität Graz, Stremayrgasse 9, 8010, Graz, Austria
| | - Christoph Marschner
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, 8010, Graz, Austria
| | - Lena Albers
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Straße 1-3, 26211, Oldenburg, Germany
| | - Thomas Müller
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Straße 1-3, 26211, Oldenburg, Germany
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25
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Schwarze N, Steinhauer S, Neumann B, Stammler HG, Hoge B. Das Tris(pentafluorethyl)silanid-Anion. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609096] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nico Schwarze
- Universität Bielefeld; Fakultät für Chemie; Centrum für Molekulare Materialien; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - Simon Steinhauer
- Universität Bielefeld; Fakultät für Chemie; Centrum für Molekulare Materialien; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - Beate Neumann
- Universität Bielefeld; Fakultät für Chemie; Centrum für Molekulare Materialien; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - Hans-Georg Stammler
- Universität Bielefeld; Fakultät für Chemie; Centrum für Molekulare Materialien; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - Berthold Hoge
- Universität Bielefeld; Fakultät für Chemie; Centrum für Molekulare Materialien; Universitätsstraße 25 33615 Bielefeld Deutschland
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26
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Schwarze N, Steinhauer S, Neumann B, Stammler HG, Hoge B. The Tris(pentafluoroethyl)silanide Anion. Angew Chem Int Ed Engl 2016; 55:16156-16160. [PMID: 27902868 DOI: 10.1002/anie.201609096] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Indexed: 11/06/2022]
Abstract
Tris(pentafluoroethyl)silane, which is conveniently accessible by the treatment of Si(C2 F5 )3 X (X=Cl, Br) with Bu3 SnH, was successfully employed for hydrosilylation reactions. In the presence of a palladium catalyst, hydrosilylation of phenylacetylene with Si(C2 F5 )3 H affords the product of an α-addition whereas the reaction of trimethylsilylacetylene with the silane leads to the β-trans product. Tris(pentafluoroethyl)silane can be deprotonated by sterically demanding bases such as lithium diisopropylamide at low temperatures to give the corresponding silanide ion. The addition of crown ethers or cryptands to this highly reactive species enabled the isolation and characterization of salt-like tris(pentafluoroethyl)silanide at room temperature.
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Affiliation(s)
- Nico Schwarze
- Universität Bielefeld, Fakultät für Chemie, Centrum für Molekulare Materialien, Universitätsstrasse 25, 33615, Bielefeld, Germany
| | - Simon Steinhauer
- Universität Bielefeld, Fakultät für Chemie, Centrum für Molekulare Materialien, Universitätsstrasse 25, 33615, Bielefeld, Germany
| | - Beate Neumann
- Universität Bielefeld, Fakultät für Chemie, Centrum für Molekulare Materialien, Universitätsstrasse 25, 33615, Bielefeld, Germany
| | - Hans-Georg Stammler
- Universität Bielefeld, Fakultät für Chemie, Centrum für Molekulare Materialien, Universitätsstrasse 25, 33615, Bielefeld, Germany
| | - Berthold Hoge
- Universität Bielefeld, Fakultät für Chemie, Centrum für Molekulare Materialien, Universitätsstrasse 25, 33615, Bielefeld, Germany
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27
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Neufeld R, Michel R, Herbst-Irmer R, Schöne R, Stalke D. Introducing a Hydrogen-Bond Donor into a Weakly Nucleophilic Brønsted Base: Alkali Metal Hexamethyldisilazides (MHMDS, M=Li, Na, K, Rb and Cs) with Ammonia. Chemistry 2016; 22:12340-6. [PMID: 27457218 DOI: 10.1002/chem.201600833] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/25/2016] [Indexed: 11/08/2022]
Abstract
Alkali metal 1,1,1,3,3,3-hexamethyldisilazide (MHMDSs) are one of the most utilised weakly nucleophilic Brønsted bases in synthetic chemistry and especially in natural product synthesis. Like lithium organics, they aggregate depending on the employed donor solvents. Thus, they show different reactivity and selectivity as a function of their aggregation and solvation state. To date, monomeric LiHMDS with monodentate donor bases was only characterised in solution. Since the first preparation of LiHMDS in 1959 by Wannagat and Niederprüm, all efforts to crystallise monomeric LiHMDS in the absence of chelating ligands failed. Herein, we present ammonia adducts of LiHMDS, NaHMDS, KHMDS, RbHMDS and CsHMDS with unprecedented aggregation motifs: 1) The hitherto missing monomeric key compound in the LiHMDS aggregation architectures. Monomeric crystal structures of trisolvated LiHMDS (1) and NaHMDS (2), showing unique intermolecular hydrogen bonds, 2) the unprecedented tetrasolvated KHMDS (3) and RbHMDS (4) dimers and 3) the disolvated CsHMDS (5) dimer with very close intermolecular Si-CH3 ⋅⋅⋅Cs s-block "agostic" interactions have been prepared and characterised by single-crystal X-ray structure analysis.
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Affiliation(s)
- Roman Neufeld
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, 37077, Göttingen, Germany
| | - Reent Michel
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, 37077, Göttingen, Germany
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, 37077, Göttingen, Germany
| | - Ralf Schöne
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, 37077, Göttingen, Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, 37077, Göttingen, Germany.
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Ishida S, Abe T, Hirakawa F, Kosai T, Sato K, Kira M, Iwamoto T. Persistent Dialkylsilanone Generated by Dehydrobromination of Dialkylbromosilanol. Chemistry 2015; 21:15100-3. [DOI: 10.1002/chem.201501478] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Indexed: 11/10/2022]
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30
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Unpredictable reaction of phenyltrichlorosilane with tert-butyllithium. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.02.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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31
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Leich V, Lamberts K, Spaniol TP, Okuda J. Crown ether adducts of light alkali metal triphenylsilyls: synthesis, structure and hydrosilylation catalysis. Dalton Trans 2014; 43:14315-21. [PMID: 24870359 DOI: 10.1039/c4dt00916a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkali metal triphenylsilyls [Li(12-crown-4)SiPh3]·(thf)0.5, [Na(15-crown-5)SiPh3]·(thf)0.5 and [K(18-crown-6)SiPh3(thf)] were synthesized using 1,1,1-trimethyl-2,2,2-triphenyldisilane and shown to catalyze the regioselective hydrosilylation of 1,1-diphenylethene.
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Affiliation(s)
- Valeri Leich
- Institute of Inorganic Chemistry
- RWTH Aachen University
- D-52056 Aachen, Germany
| | - Kevin Lamberts
- Institute of Inorganic Chemistry
- RWTH Aachen University
- D-52056 Aachen, Germany
| | - Thomas P. Spaniol
- Institute of Inorganic Chemistry
- RWTH Aachen University
- D-52056 Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry
- RWTH Aachen University
- D-52056 Aachen, Germany
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32
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Saunders LN, Dawe LN, Kozak CM. Alkali metal complexes of tridentate amine-bis(phenolate) ligands and their rac-lactide ROP activity. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.09.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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Robinson S, Davies ES, Lewis W, Blake AJ, Liddle ST. Alkali metal derivatives of an ortho-phenylene diamine. Dalton Trans 2014; 43:4351-60. [DOI: 10.1039/c3dt52632a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Mulvey RE, Robertson SD. Synthetically important alkali-metal utility amides: lithium, sodium, and potassium hexamethyldisilazides, diisopropylamides, and tetramethylpiperidides. Angew Chem Int Ed Engl 2013; 52:11470-87. [PMID: 24133015 DOI: 10.1002/anie.201301837] [Citation(s) in RCA: 151] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Indexed: 11/08/2022]
Abstract
Most synthetic chemists will have at some point utilized a sterically demanding secondary amide (R2 N(-) ). The three most important examples, lithium 1,1,1,3,3,3-hexamethyldisilazide (LiHMDS), lithium diisopropylamide (LiDA), and lithium 2,2,6,6-tetramethylpiperidide (LiTMP)-the "utility amides"-have long been indispensible particularly for lithiation (Li-H exchange) reactions. Like organolithium compounds, they exhibit aggregation phenomena and strong Lewis acidity, and thus appear in distinct forms depending on the solvents employed. The structural chemistry of these compounds as well as their sodium and potassium congeners are described in the absence or in the presence of the most synthetically significant donor solvents tetrahydrofuran (THF) and N,N,N',N'-tetramethylethylenediamine (TMEDA) or closely related solvents. Examples of hetero-alkali-metal amides, an increasingly important composition because of the recent escalation of interest in mixed-metal synergic effects, are also included.
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Affiliation(s)
- Robert E Mulvey
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, G1 1XL (UK).
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35
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Mulvey RE, Robertson SD. Nützliche Alkalimetallamide für die Synthese: Lithium-, Natrium- und Kaliumhexamethyldisilazide, -diisopropylamide und -tetramethylpiperidide. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301837] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Wooles AJ, Lewis W, Blake AJ, Liddle ST. β-Diketiminate Derivatives of Alkali Metals and Uranium. Organometallics 2013. [DOI: 10.1021/om400435b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ashley J. Wooles
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Stephen T. Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
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37
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Hlina J, Baumgartner J, Marschner C. Cyclic Disilylated and Digermylated Germylenes. Organometallics 2013; 32:3404-3410. [PMID: 23874054 PMCID: PMC3714166 DOI: 10.1021/om400365v] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Indexed: 11/30/2022]
Abstract
The preparation of triethylphosphine adducts of cyclic disilylated or digermylated germylenes was achieved by reaction of 1,4-dipotassio-1,1,4,4-tetrakis(trimethylsilyl)tetramethyltetrasilane with GeBr2·(dioxane) and PEt3. Phosphine abstraction with B(C6F5)3 allowed formation of the base-free germylenes, which undergo 1,2-trimethylsilyl shifts to the germylene atom to form the respective silagermene or digermene, which further dimerize in [2 + 2] cycloadditions to tricyclic compounds. The reasons responsible for the germylenes' completely different reactivities in comparison to the previously studied analogous stannylenes and plumbylenes were elucidated in a theoretical study.
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Affiliation(s)
- Johann Hlina
- Institut für
Anorganische Chemie, Technische Universität
Graz, Stremayrgasse 9, A-8010 Graz, Austria
| | - Judith Baumgartner
- Institut für
Anorganische Chemie, Technische Universität
Graz, Stremayrgasse 9, A-8010 Graz, Austria
| | - Christoph Marschner
- Institut für
Anorganische Chemie, Technische Universität
Graz, Stremayrgasse 9, A-8010 Graz, Austria
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38
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Andreychuk NR, Emslie DJH. Potassium-Alkane Interactions within a Rigid Hydrophobic Pocket. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201207962] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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Andreychuk NR, Emslie DJH. Potassium-Alkane Interactions within a Rigid Hydrophobic Pocket. Angew Chem Int Ed Engl 2013; 52:1696-9. [DOI: 10.1002/anie.201207962] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Indexed: 11/05/2022]
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40
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Xiao XQ, Zhao H, Xu Z, Lai G, He XL, Li Z. Reduction of the dihalocyclopentasilanes. A quest for a homocyclic silylene. Chem Commun (Camb) 2013; 49:2706-8. [DOI: 10.1039/c3cc00114h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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41
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Dobrovetsky R, Kratish Y, Tumanskii B, Botoshansky M, Bravo-Zhivotovskii D, Apeloig Y. Radical Activation of SiH Bonds by Organozinc and Silylzinc Reagents: Synthesis of Geminal Dizinciosilanes and Zinciolithiosilanes. Angew Chem Int Ed Engl 2012; 51:4671-5. [DOI: 10.1002/anie.201200126] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 02/16/2012] [Indexed: 11/11/2022]
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43
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Dobrovetsky R, Kratish Y, Tumanskii B, Botoshansky M, Bravo-Zhivotovskii D, Apeloig Y. Radical Activation of SiH Bonds by Organozinc and Silylzinc Reagents: Synthesis of Geminal Dizinciosilanes and Zinciolithiosilanes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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44
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Wolstenholme DJ, Prince PD, McGrady GS, Landry MJ, Steed JW. Structure and Bonding of KSiH3 and Its 18-Crown-6 Derivatives: Unusual Ambidentate Behavior of the SiH3– Anion. Inorg Chem 2011; 50:11222-7. [DOI: 10.1021/ic201774x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- David J. Wolstenholme
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - Paul D. Prince
- Department of Chemistry, King’s College London, Strand, London WC2R 2LS, United Kingdom
| | - G. Sean McGrady
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - Michael J. Landry
- Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - Jonathan W. Steed
- Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, United Kingdom
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45
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Wooles AJ, Gregson M, Cooper OJ, Middleton-Gear A, Mills DP, Lewis W, Blake AJ, Liddle ST. Group 1 Bis(iminophosphorano)methanides, Part 1: N-Alkyl and Silyl Derivatives of the Sterically Demanding Methanes H2C(PPh2NR)2 (R = Adamantyl and Trimethylsilyl). Organometallics 2011. [DOI: 10.1021/om200553s] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ashley J. Wooles
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Matthew Gregson
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Oliver J. Cooper
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Amy Middleton-Gear
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - David P. Mills
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Stephen T. Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
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46
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Wooles AJ, Gregson M, Robinson S, Cooper OJ, Mills DP, Lewis W, Blake AJ, Liddle ST. Group 1 Bis(iminophosphorano)methanides, Part 2: N-Aryl Derivatives of the Sterically Demanding Methanes H2C(PPh2NR)2 (R = 2,4,6-trimethylphenyl or 2,6-diisopropylphenyl). Organometallics 2011. [DOI: 10.1021/om200729x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ashley J. Wooles
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Matthew Gregson
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Sarah Robinson
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Oliver J. Cooper
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - David P. Mills
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Stephen T. Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
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47
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Calvo B, Davidson MG, García-Vivó D. Polyamine-stabilized sodium aryloxides: simple initiators for the ring-opening polymerization of rac-lactide. Inorg Chem 2011; 50:3589-95. [PMID: 21410272 DOI: 10.1021/ic102542q] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Metalation of 2,4,6-tri(methyl)phenol ((Me)ArOH) and 2,6-di(tert-butyl)-4-methylphenol ((Bu)ArOH) with NaN(SiMe(3))(2) in toluene and in the presence of stoichiometric amounts of the polydentate amines N,N,N',N'-tetramethylethylenediamine (TMEDA) and N,N,N',N'',N''-pentamethyldiethylenetriamine (PMDETA) affords three new sodium aryloxide complexes [Na(μ-OAr(Bu))(TMEDA)](2) (3), [Na(μ-OAr(Me))(PMDETA)](2) (4), and [Na(OAr(Bu))(PMDETA)] (5). Complexes 3 to 5 have been isolated as crystalline materials in reasonable yields and characterized in the solid state by X-ray crystallography and in solution by NMR spectroscopy. Complexes 3 to 5 and the related [tris(2-dimethylaminoethyl)amine] (Me(6)TREN) derivatives [Na(OAr(Me))(HOAr(Me))(Me(6)TREN)] (1) and [Na(OAr(Bu))(Me(6)TREN)] (2), recently prepared in our group, are shown to be active as initiators for the ring-opening polymerization (ROP) of rac-lactide with benzyl alcohol as a co-initiator. However, during the course of the polymerization reactions intrachain and stereorandom transesterification side-reactions were observed under some of the experimental conditions tested.
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Affiliation(s)
- Beatriz Calvo
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK
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Li H, Hope-Weeks LJ, Krempner C. A supramolecular approach to zwitterionic alkaline metal silanides and formation of heterobimetallic silanides. Chem Commun (Camb) 2011; 47:4117-9. [PMID: 21380448 DOI: 10.1039/c1cc10148j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Hui Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409, USA
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Bénaud O, Berthet JC, Thuéry P, Ephritikhine M. The Bis Metallacyclic Anion [U(N{SiMe3}2)(CH2SiMe2N{SiMe3})2]−. Inorg Chem 2010; 49:8117-30. [DOI: 10.1021/ic1012044] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Olivier Bénaud
- CEA, IRAMIS, SIS2M, CNRS UMR 3299, CEA/Saclay, 91191 Gif-sur-Yvette, France
| | | | - Pierre Thuéry
- CEA, IRAMIS, SIS2M, CNRS UMR 3299, CEA/Saclay, 91191 Gif-sur-Yvette, France
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50
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Carrella LM, Förster C, Kennedy AR, Klett J, Mulvey RE, Rentschler E. Synthesis and Structure of a Potassium Potassiochromate: A Bis-Chromium(II) Molecule Held Together by Near-Square-Planar Potassium−Ligand Bridges. Organometallics 2010. [DOI: 10.1021/om100327w] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Luca M. Carrella
- Institut für Anorganische
Chemie und Analytische Chemie, Johannes-Gutenberg-Universität
Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Christoph Förster
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK G1 1XL
| | - Alan R. Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK G1 1XL
| | - Jan Klett
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK G1 1XL
| | - Robert E. Mulvey
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK G1 1XL
| | - Eva Rentschler
- Institut für Anorganische
Chemie und Analytische Chemie, Johannes-Gutenberg-Universität
Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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