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Silicon Complexes Based on SS- and SS-Coordinating Tridentate Ligands. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Baus JA, Tacke R. Neutral six-coordinate bis(dithiocarbamato)silicon(iv) complexes with an SiCl 2S 4 skeleton. Dalton Trans 2017; 46:8751-8755. [PMID: 27713941 DOI: 10.1039/c6dt03264h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of SiCl4 with lithium dithiocarbamates of the formula type Li[R2NCS2] (R = Ph, iPr) in a molar ratio of 1 : 2 afforded the respective six-coordinate silicon(iv) complexes [Ph2NCS2]2SiCl2 (3) and [iPr2NCS2]2SiCl2 (4), which were isolated as the solvates 3·MeCN and 4·MeCN. Compounds 3·MeCN and 4·MeCN were structurally characterised by single-crystal X-ray diffraction and multinuclear NMR spectroscopic studies in the solid state and in solution. In this study, dithiocarbamato ligands were implemented in silicon coordination chemistry for the first time. Compounds 3 and 4 represent the first six-coordinate silicon(iv) complexes with an SiCl2S4 skeleton.
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Affiliation(s)
- Johannes A Baus
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg, Germany.
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Koch JG, Brennessel WW, Kraft BM. Neutral and Cationic Bis-Chelate Monoorganosilicon(IV) Complexes of 1-Hydroxy-2-pyridinone. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00796] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - William W. Brennessel
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Bradley M. Kraft
- Department
of Chemistry, St. John Fisher College, Rochester, New York 14618, United States
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Hexacoordinate Silicon Compounds with a Dianionic Tetradentate (N,N′,N′,N)-Chelating Ligand. INORGANICS 2016. [DOI: 10.3390/inorganics4020008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Mück FM, Baus JA, Burschka C, Tacke R. Cationic Five-Coordinate Bis(guanidinato)silicon(IV) Complexes with SiN4 El Skeletons (El=S, Se): "Heterolytic Activation" of S-S and Se-Se Bonds. Chemistry 2016; 22:5830-4. [PMID: 26990121 DOI: 10.1002/chem.201505083] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Indexed: 11/12/2022]
Abstract
The donor-stabilized silylene [iPrNC(NiPr2 )NiPr]2 Si (2) reacts with PhEl-ElPh (El=S, Se) to form the respective cationic five-coordinate bis(guanidinato)silicon(IV) complexes {[iPrNC(NiPr2 )NiPr]2 SiSPh}(+) PhS(-) (4) and {[iPrNC (NiPr2 )NiPr]2 SiSePh}(+) PhSe(-) (5). Compounds 4 and 5 were characterized by crystal structure analyses and NMR spectroscopic studies in the solid state.
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Affiliation(s)
- Felix M Mück
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074, Würzburg, Germany
| | - Johannes A Baus
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074, Würzburg, Germany
| | - Christian Burschka
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074, Würzburg, Germany
| | - Reinhold Tacke
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074, Würzburg, Germany.
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Kämpfe A, Brendler E, Kroke E, Wagler J. Tp*Cu(I)-CN-SiL2-NC-Cu(I)Tp*--a hexacoordinate Si-complex as connector for redox active metals via π-conjugated ligands. Dalton Trans 2015; 44:4744-50. [PMID: 25665985 DOI: 10.1039/c4dt03903c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hexacoordinate silicon complexes L2SiX2 (L = a 2-benzoylpyrrol-1-yl derivative, X = CN, NCS) were synthesized from L2SiCl2 by ligand exchange with trimethylsilyl reagents Me3SiX. In the presence of [Tp*CuNCMe] and Me3SiCN the silicon complex L2Si(NC(CuTp*))2 was obtained, which contains a linear Cu-CN-Si-NC-Cu unit (Tp* = hydrotris(3,5-dimethylpyrazolyl)borato).
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Affiliation(s)
- Alexander Kämpfe
- Institut für Anorganische Chemie, TU Bergakademie Freiberg, D-09596 Freiberg, Germany.
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Tacke R, Kobelt C, Baus JA, Bertermann R, Burschka C. Synthesis, structure and reactivity of a donor-stabilised silylene with a bulky bidentate benzamidinato ligand. Dalton Trans 2015; 44:14959-74. [DOI: 10.1039/c5dt01581b] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel donor-stabilised silicon(ii) complex with an SiN3 skeleton was synthesised and its reactivity profile was characterised (reactions with N2O, S8, Se, Te, Me3SiN3, PhSCH2N3 and [Fe(CO)5]).
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Affiliation(s)
- Reinhold Tacke
- Universität Würzburg
- Institut für Anorganische Chemie
- Am Hubland
- Germany
| | - Claudia Kobelt
- Universität Würzburg
- Institut für Anorganische Chemie
- Am Hubland
- Germany
| | - Johannes A. Baus
- Universität Würzburg
- Institut für Anorganische Chemie
- Am Hubland
- Germany
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Junold K, Sinner K, Baus JA, Burschka C, Fonseca Guerra C, Bickelhaupt FM, Tacke R. Reactions of the Donor-Stabilized Silylene Bis[N,N′-diisopropyl-benzamidinato(−)]silicon(II) with Brønsted Acids. Chemistry 2014; 20:16462-6. [DOI: 10.1002/chem.201404667] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Indexed: 11/10/2022]
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Junold K, Baus JA, Burschka C, Finze M, Tacke R. Selective C-H Bond Activation of 1,2-Dicarba-closo-dodecaborane by the Donor-Stabilized Silylene Bis[N,N′-diisopropylbenzamidinato(-)]silicon(II). Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402685] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Junold K, Mück FM, Kupper C, Baus JA, Burschka C, Tacke R. Activation of Sulfur Dioxide by Bis[N,N′-diisopropylbenzamidinato(−)]silicon(II): Synthesis of Neutral Six-Coordinate Silicon(IV) Complexes with ChelatingO,O′-Sulfito orO,O′-Dithionito Ligands. Chemistry 2014; 20:12781-5. [DOI: 10.1002/chem.201404119] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Indexed: 11/07/2022]
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Junold K, Baus JA, Burschka C, Fonseca Guerra C, Bickelhaupt FM, Tacke R. Bis[N,N′-diisopropylbenzamidinato(−)]silicon(II): Lewis Acid/Base Reactions with Triorganylboranes. Chemistry 2014; 20:12411-5. [DOI: 10.1002/chem.201403995] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Indexed: 11/05/2022]
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Kämpfe A, Brendler E, Kroke E, Wagler J. 2-Acylpyrroles as mono-anionic O,N-chelating ligands in silicon coordination chemistry. Chemistry 2014; 20:9409-18. [PMID: 25043769 DOI: 10.1002/chem.201402803] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Indexed: 11/07/2022]
Abstract
Kryptopyrrole (2,4-dimethyl-3-ethylpyrrole) was acylated with, for example, benzoyl chloride to afford 2-benzoyl-3,5-dimethyl-4-ethylpyrrole (L(1)H). With SiCl4 this ligand reacts under liberation of HCl and formation of the complex L(1)2SiCl2. In related reactions with HSiCl3 or H2SiCl2, the same chlorosilicon complex is formed under liberation of HCl and H2 or liberation of H2, respectively. The chlorine atoms of L(1)2SiCl2 can be replaced by fluoride and triflate using ZnF2 and Me3Si-OTf, respectively. The use of a supporting base (triethylamine) is required for the complexation of phenyltrichlorosilane and diphenyldichlorosilane. The complexes L(1)2SiCl2, L(1)2SiF2, L(1)2Si(OTf)2, L(1)2SiPhCl, and L(1)2SiPh2 exhibit various configurations of the octahedral silicon coordination spheres (i.e. cis or trans configuration of the monodentate substituents, different orientations of the bidentate chelating ligands relative to each other). Furthermore, cationic silicon complexes L(1)3Si(+) and L(1) SiPh(+) were synthesized by chloride abstraction with GaCl3. In contrast, reaction of L(1)2SiCl2 with a third equivalent of L(1)H in the presence of excess triethylamine produced a charge-neutral hexacoordinate Si complex with a new tetradentate chelating ligand which formed by Si-templated C-C coupling of two ligands L(1).
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Affiliation(s)
- Alexander Kämpfe
- Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg, 09596 Freiberg (Germany), Fax: (+49) 3731394058
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Mück FM, Kloß D, Baus JA, Burschka C, Tacke R. Novel Transition-Metal (M=Cr, Mo, W, Fe) Carbonyl Complexes with Bis(guanidinato)silicon(II) Ligands. Chemistry 2014; 20:9620-6. [DOI: 10.1002/chem.201402889] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Indexed: 11/07/2022]
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Weiß J, Baus JA, Burschka C, Tacke R. Neutral Hexacoordinate Silicon(IV) Complexes with a Tridentate Dianionic
O
,
N
,
X
Ligand (X = O, N, S), Bidentate Monoanionic
X
,
N
Ligand (X = O, S), and Phenyl Ligand: Compounds with a
Si
O
3
N
2
C,
Si
SO
2
N
2
C,
Si
O
2
N
3
C,
Si
SON
3
C, or
Si
S
2
ON
2
C Skeleton. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201400083] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jörg Weiß
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg, Germany, http://www‐anorganik.chemie.uni‐wuerzburg.de/
| | - Johannes A. Baus
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg, Germany, http://www‐anorganik.chemie.uni‐wuerzburg.de/
| | - Christian Burschka
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg, Germany, http://www‐anorganik.chemie.uni‐wuerzburg.de/
| | - Reinhold Tacke
- Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074 Würzburg, Germany, http://www‐anorganik.chemie.uni‐wuerzburg.de/
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