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Hendi Z, Pandey MK, Rachuy K, Singh MK, Herbst-Irmer R, Stalke D, Roesky HW. Synthesis, Reactivity, and Complexation with Fe(0) of a Tight-bite Bis(N-heterocyclic silylene). Chemistry 2024; 30:e202400389. [PMID: 38494463 DOI: 10.1002/chem.202400389] [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: 01/29/2024] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 03/19/2024]
Abstract
The synthesis, reactivity, and complexation with Fe(0) precursor of a tight-bite bis(N-heterocyclic silylene) (bis(NHSi)) ligand 1 are reported. The reaction of 1 with p-toluidine led to the activation of both N-H bonds across Si(II) atoms to afford a four-membered heterocyclic cyclodisilazane 2, with hydride substituents attached to five-coordinate Si atoms. A 1 : 2 reaction of 1 with Fe(CO)5 led to an intriguing dinuclear complex 3 featuring a five-membered (N-Si-Fe-Fe-Si) ring with a Fe-Fe bond distance of 2.6892(13) Å. All compounds (1-3) were thoroughly characterized by various spectroscopic methods and X-ray diffraction studies conclusively established their molecular structures. DFT calculations were carried out to shed light on bonding and energetic aspects in 1-3.
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Affiliation(s)
- Zohreh Hendi
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany
| | - Madhusudan K Pandey
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany
| | - Katharina Rachuy
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany
| | - Mukesh K Singh
- School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, United Kingdom
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany
| | - Herbert W Roesky
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany
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2
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Sivaramakrishna A, Pete S, Mandar Mhaskar C, Ramann H, Venkata Ramanaiah D, Arbaaz M, Niyaz M, Janardan S, Suman P. Role of hypercoordinated silicon(IV) complexes in activation of carbon–silicon bonds: An overview on utility in synthetic chemistry. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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3
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Tiede ER, Heckman MT, Brennessel WW, Kraft BM. Chelation Equilibria and π-Electron Delocalization in Neutral Hypercoordinate Organosilicon Complexes of Pyrithione. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Erin R. Tiede
- Department of Chemistry, St. John Fisher University, Rochester, New York 14618, United States
| | - Matthew T. Heckman
- Department of Chemistry, St. John Fisher University, Rochester, New York 14618, United States
| | - William W. Brennessel
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Bradley M. Kraft
- Department of Chemistry, St. John Fisher University, Rochester, New York 14618, United States
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4
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Molecular Structures of the Silicon Pyridine-2-(thi)olates Me3Si(pyX), Me2Si(pyX)2 and Ph2Si(pyX)2 (py = 2-Pyridyl, X = O, S), and Their Intra- and Intermolecular Ligand Exchange in Solution. CRYSTALS 2022. [DOI: 10.3390/cryst12081054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A series of pyridine-2-olates (pyO) and pyridine-2-thiolates (pyS) of silicon was studied in solid state and in solution. The crystal structures of Me3Si(pyO) (1a), Me3Si(pyS) (1b), Me2Si(pyO)2 (2a), Me2Si(pyS)2 (2b), Ph2Si(pyO)2 (3a) and Ph2Si(pyS)2 (3b) were determined by X-ray diffraction. For that purpose, crystals of the (at room temperature) liquid compounds 1a and 1b were grown in a capillary on the diffractometer. Compounds 1a, 1b, 2a, 2b and 3a feature tetracoordinate silicon atoms in the solid state, whereas 3b gave rise to a series of four crystal structures in which the Si atoms of this compound are hexacoordinate. Two isomers (3b1 with all-cis arrangement of the C2N2S2 donor atoms in P, and 3b2 with trans S-Si-S axis in P21/n) formed individual crystal batches, which allowed for their individual 29Si NMR spectroscopic study in the solid state (the determination of their chemical shift anisotropy tensors). Furthermore, the structures of a less stable modification of 3b2 (in C2/c) as well as a toluene solvate 3b2×(toluene) (in P) were determined. In CDCl3, the equimolar solutions of the corresponding pairs of pyO and pyS compounds (2a/2b and 3a/3b) showed substituent scrambling with the formation of the products Me2Si(pyO)(pyS) (2c) and Ph2Si(pyO)(pyS) (3c), respectively, as minor components in the respective substituent exchange equilibrium.
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5
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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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6
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Wächtler E, Gericke R, Block T, Gerke B, Pöttgen R, Wagler J. Compounds of the types Pn(pyS) 3 ( Pn = P, As, Bi; pyS: pyridine-2-thiolate) and Sb(pyS)
x
Ph 3–x
( x = 3–1); molecular structures and electronic situations of the Pn atoms. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2020-0171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Abstract
The compounds Pn(pyS)3 (Pn = P, As, Sb, Bi) were synthesized from the respective chloride (Pn = P, As, Sb) or nitrate (Bi), pyridine-2-thiol (pySH) and triethylamine (NEt3) as a supporting base in THF (P, Sb), CHCl3 (As) or methanol (Bi). Sb(pyS)3 was also obtained from the reaction of SbCl3 with LipyS (prepared in situ) in methanol. The compounds Sb(pyS)2Ph and Sb(pyS)Ph2 were prepared in a one-pot reaction starting from SbCl3 and SbPh3 (1:1 ratio). Upon Cl/pyS substitution, the resulting reaction mixture allows for a facile separation of the products in hot hexane. P(pyS)3 and As(pyS)3 crystallize isostructurally to the reported structure of Sb(pyS)3 with κ-S-bound pyS ligands. These crystal structures feature close Pn···Pn contacts which are most pronounced for the arsenic derivative. Bi(pyS)3 adopts a different molecular structure in the solid state, which features two chelating (κ
2-S,N-pyS) ligands and a κ-S-bound ligand. The presence of N→Bi interactions between the nitrogen atom of the κ-S-pyS ligand and the Bi atom of another molecule renders this structure a polymer chain along the crystallographic b axis with Bi⋅⋅⋅Bi van-der-Waals contacts. The structures of this set of Pn(pyS)3 compounds were also studied in solution using 1H NMR spectroscopy, revealing equivalent pyS ligands in discrete Pn(pyS)3 molecules. The molecular structure of Sb(pyS)Ph2 was optimized by quantum chemical methods, and a comparison with the structures reported for the other Sb/pyS/Ph combinations reveals Sb(pyS)2Ph to feature the strongest Sb···N interactions with the κ-S-pyS ligand. The results of 1H NMR spectroscopic investigations of the compounds Sb(pyS)
x
Ph3–x
(x = 3–0) suggest the Ph protons in ortho position to be incorporated into intramolecular C–H···S contacts for x = 2 and 1. Natural localized molecular orbital (NLMO) calculations were employed in order to gain insights into the electronic situations of the Pn atoms and Pn–R bonds (R = S, C), especially for the effects caused by formal substitution of Pn in the compounds Pn(pyS)3 and the ligand patterns in the compounds Sb(pyS)
x
Ph3–x
(x = 3–0). For the latter series of compounds, the electronic situation of the Sb atom was further studied by 121Sb Mössbauer spectroscopy, providing a correlation between the calculated electron density at Sb [ρ(0)] and the experimentally observed isomer shift δ. The missing link between group 15 and group 13 metal compounds of the type M(pyS)3, compound Al(pyS)3, was synthesized in this work. In the solid state (confirmed crystallographically), the mer isomer of this tris-chelate complex with distorted octahedral Al coordination sphere was found. This coordination mode was confirmed for the solution state (CDCl3) by 1H and 13C NMR spectroscopy at T = −40 °C.
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Affiliation(s)
- Erik Wächtler
- Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg , Leipziger Straße 29 , 09596 Freiberg , Germany
| | - Robert Gericke
- Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg , Leipziger Straße 29 , 09596 Freiberg , Germany
- School of Chemistry, Trinity College Dublin , 152–160 Pearse Street , Dublin 2 , Ireland
| | - Theresa Block
- Institut für Anorganische und Analytische Chemie, Universität Münster , Corrensstraße 30 , 48149 Münster , Germany
| | - Birgit Gerke
- Institut für Anorganische und Analytische Chemie, Universität Münster , Corrensstraße 30 , 48149 Münster , Germany
| | - Rainer Pöttgen
- Institut für Anorganische und Analytische Chemie, Universität Münster , Corrensstraße 30 , 48149 Münster , Germany
| | - Jörg Wagler
- Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg , Leipziger Straße 29 , 09596 Freiberg , Germany
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Petkowski JJ, Bains W, Seager S. On the Potential of Silicon as a Building Block for Life. Life (Basel) 2020; 10:E84. [PMID: 32532048 PMCID: PMC7345352 DOI: 10.3390/life10060084] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 12/21/2022] Open
Abstract
Despite more than one hundred years of work on organosilicon chemistry, the basis for the plausibility of silicon-based life has never been systematically addressed nor objectively reviewed. We provide a comprehensive assessment of the possibility of silicon-based biochemistry, based on a review of what is known and what has been modeled, even including speculative work. We assess whether or not silicon chemistry meets the requirements for chemical diversity and reactivity as compared to carbon. To expand the possibility of plausible silicon biochemistry, we explore silicon's chemical complexity in diverse solvents found in planetary environments, including water, cryosolvents, and sulfuric acid. In no environment is a life based primarily around silicon chemistry a plausible option. We find that in a water-rich environment silicon's chemical capacity is highly limited due to ubiquitous silica formation; silicon can likely only be used as a rare and specialized heteroatom. Cryosolvents (e.g., liquid N2) provide extremely low solubility of all molecules, including organosilicons. Sulfuric acid, surprisingly, appears to be able to support a much larger diversity of organosilicon chemistry than water.
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Affiliation(s)
- Janusz Jurand Petkowski
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Mass. Ave., Cambridge, MA 02139, USA; (W.B.); (S.S.)
| | - William Bains
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Mass. Ave., Cambridge, MA 02139, USA; (W.B.); (S.S.)
| | - Sara Seager
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Mass. Ave., Cambridge, MA 02139, USA; (W.B.); (S.S.)
- Department of Physics, Massachusetts Institute of Technology, 77 Mass. Ave., Cambridge, MA 02139, USA
- Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, 77 Mass. Ave., Cambridge, MA 02139, USA
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8
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Furuta S, Mori T, Yoshigoe Y, Sekine K, Kuninobu Y. Synthesis, structures and photophysical properties of hexacoordinated organosilicon compounds with 2-(2-pyridyl)phenyl groups. Org Biomol Chem 2020; 18:3239-3242. [PMID: 32285083 DOI: 10.1039/d0ob00484g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesised novel hexacoordinated organosilicon compounds with two 2-(2-pyridyl)phenyl groups. Single-crystal X-ray structure analyses indicated that Lewis acid-base interactions exist between the silicon atom and two nitrogen atoms of the pyridine rings, and that hexacoordinated organosilicon compounds have slightly distorted octahedral structures in the solid state. The hexacoordinated organosilicon compounds are stable in air, water, heat, acids, and bases. The fluorescent quantum yield increased dramatically and a significant red-shift of the maximum fluorescence wavelength was observed with the introduction of amino groups on the 2-(2-pyridyl)phenyl aromatic rings. The fluorescence colours of a hexacoordinated organosilicon compound with two amino groups can be switched by protonation and deprotonation (neutralisation) of the amino groups.
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Affiliation(s)
- Shohei Furuta
- Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - Toshiaki Mori
- Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - Yusuke Yoshigoe
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan.
| | - Kohei Sekine
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan. and Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - Yoichiro Kuninobu
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan. and Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
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9
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Levernier E, Lévêque C, Derat E, Fensterbank L, Ollivier C. Towards Visible‐Light Photocatalytic Reduction of Hypercoordinated Silicon Species. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Etienne Levernier
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
| | - Christophe Lévêque
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
| | - Etienne Derat
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
| | - Louis Fensterbank
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
| | - Cyril Ollivier
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie Moléculaire 4 Place Jussieu, CC 229 FR-75252 Paris Cedex 05 France
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10
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Abstract
Proceeding our initial studies of compounds with formally dative TM→Si bonds (TM = Ni, Pd, Pt), which feature a paddlewheel arrangement of four (N,S) or (N,N) bridging ligands around the TM–Si axis, the current study shows that the (N,O)-bidentate ligand 2-pyridyloxy (pyO) is also capable of bridging systems with TM→Si bonds (shown for TM = Pd, Cu). Reactions of MeSi(pyO)3 with [PdCl2(NCMe)2] and CuCl afforded the compounds MeSi(µ-pyO)4PdCl (1) and MeSi(µ-pyO)3CuCl (2), respectively. In the latter case, some crystals of the Cu(II) compound MeSi(µ-pyO)4CuCl (3) were obtained as a byproduct. Analogous reactions of Si(pyO)4, in the presence of HpyO, with [PdCl2(NCMe)2] and CuCl2, afforded the compounds [(HpyO)Si(µ-pyO)4PdCl]Cl (4), (HpyO)2Si[(µ-pyO)2PdCl2]2 (5), and (HpyO)2Si[(µ-pyO)2CuCl2]2 (6), respectively. Compounds 1–6 and the starting silanes MeSi(pyO)3 and Si(pyO)4 were characterized by single-crystal X-ray diffraction analyses and, with exception of the paramagnetic compounds 3 and 6, with NMR spectroscopy. Compound 2 features a pentacoordinate Si atom, the Si atoms of the other complexes are hexacoordinate. Whereas compounds 1–4 feature a TM→Si bond each, the Si atoms of compounds 5 and 6 are situated in an O6 coordination sphere, while the TMCl2 groups are coordinated to pyridine moieties in the periphery of the molecule. The TM–Si interatomic distances in compounds 1–4 are close to the sum of the covalent radii (1 and 4) or at least significantly shorter than the sum of the van-der-Waals radii (2 and 3). The latter indicates a noticeably weaker interaction for TM = Cu. For the series 1, 2, and 3, all of which feature the Me–Si motif trans-disposed to the TM→Si bond, the dependence of the TM→Si interaction on the nature of TM (Pd(II), Cu(I), and Cu(II)) was analyzed using quantum chemical calculations, that is, the natural localized molecular orbitals (NLMO) analyses, the non-covalent interaction (NCI) descriptor, Wiberg bond order (WBO), and topological characteristics of the bond critical points using the atoms in molecules (AIM) approach.
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11
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Pakhomova A, Bykova E, Bykov M, Glazyrin K, Gasharova B, Liermann HP, Mezouar M, Gorelova L, Krivovichev S, Dubrovinsky L. A closer look into close packing: pentacoordinated silicon in a high-pressure polymorph of danburite. IUCRJ 2017; 4:671-677. [PMID: 28989722 PMCID: PMC5619858 DOI: 10.1107/s2052252517010612] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 07/18/2017] [Indexed: 06/07/2023]
Abstract
Due to their high technological and geological relevance, silicates are one of the most studied classes of inorganic compounds. Under ambient conditions, the silicon in silicates is almost exclusively coordinated by four oxygen atoms, while high-pressure treatment normally results in an increase in the coordination from four- to sixfold. Reported here is a high-pressure single-crystal X-ray diffraction study of danburite, CaB2Si2O8, the first compound showing a step-wise transition of Si coordination from tetrahedral to octahedral through a trigonal bipyramid. Along the compression, the Si2O7 groups of danburite first transform into chains of vertice-sharing SiO5 trigonal bipyramids (danburite-II) and later into chains of edge-sharing SiO6 octahedra (danburite-III). It is suggested that the unusual formation of an SiO5 configuration is a consequence of filling up the pentacoordinated voids in the distorted hexagonal close packing of danburite-II.
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Affiliation(s)
- Anna Pakhomova
- Deutsches Elektronen-Synchrotron (DESY), Hamburg 22607, Germany
| | - Elena Bykova
- Deutsches Elektronen-Synchrotron (DESY), Hamburg 22607, Germany
| | - Maxim Bykov
- Bayerisches Geoinstitut, University of Bayreuth, Bayreuth 95440, Germany
| | | | - Biliana Gasharova
- Institut für Beschleunigerphysik und Technologie (IBPT), Karlsruhe Institute of Technology, Karlsruhe 76021, Germany
| | | | - Mohamed Mezouar
- European Synchrotron Radiation Facility, Grenoble Cedex 38043, France
| | - Liudmila Gorelova
- Institute of Earth Sciences, Saint Petersburg State University, Saint Petersburg 199155, Russian Federation
| | - Sergey Krivovichev
- Institute of Earth Sciences, Saint Petersburg State University, Saint Petersburg 199155, Russian Federation
| | - Leonid Dubrovinsky
- Bayerisches Geoinstitut, University of Bayreuth, Bayreuth 95440, Germany
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12
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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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13
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Kreider-Mueller A, Quinlivan PJ, Owen JS, Parkin G. Tris(2-mercaptoimidazolyl)hydroborato Cadmium Thiolate Complexes, [Tm But]CdSAr: Thiolate Exchange at Cadmium in a Sulfur-Rich Coordination Environment. Inorg Chem 2017; 56:4644-4654. [PMID: 28368611 PMCID: PMC5461919 DOI: 10.1021/acs.inorgchem.7b00296] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Indexed: 11/30/2022]
Abstract
A series of cadmium thiolate compounds that feature a sulfur-rich coordination environment, namely [TmBut]CdSAr, have been synthesized by the reactions of [TmBut]CdMe with ArSH (Ar = C6H4-4-F, C6H4-4-But, C6H4-4-OMe, and C6H4-3-OMe). In addition, the pyridine-2-thiolate and pyridine-2-selenolate derivatives, [TmBut]CdSPy and [TmBut]CdSePy have been obtained via the respective reactions of [TmBut]CdMe with pyridine-2-thione and pyridine-2-selone. The molecular structures of [TmBut]CdSAr and [TmBut]CdEPy (E = S or Se) have been determined by X-ray diffraction and demonstrate that, in each case, the [CdS4] motif is distorted tetrahedral and approaches a trigonal monopyramidal geometry in which the thiolate ligand adopts an equatorial position; [TmBut]CdSPy and [TmBut]CdSePy, however, exhibit an additional long-range interaction with the pyridyl nitrogen atoms. The ability of the thiolate ligands to participate in exchange was probed by 1H and 19F nuclear magnetic resonance (NMR) spectroscopic studies of the reactions of [TmBut]CdSC6H4-4-F with ArSH (Ar = C6H4-4-But or C6H4-4-OMe), which demonstrate that (i) exchange is facile and (ii) coordination of thiolate to cadmium is most favored for the p-fluorophenyl derivative. Furthermore, a two-dimensional EXSY experiment involving [TmBut]CdSC6H4-4-F and 4-fluorothiophenol demonstrates that degenerate thiolate ligand exchange is also facile on the NMR time scale.
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Affiliation(s)
- Ava Kreider-Mueller
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Patrick J. Quinlivan
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Jonathan S. Owen
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Gerard Parkin
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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14
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Wächtler E, Oro LA, Iglesias M, Gerke B, Pöttgen R, Gericke R, Wagler J. Synthesis and Oxidation of a Paddlewheel-Shaped Rhodium/Antimony Complex Featuring Pyridine-2-Thiolate Ligands. Chemistry 2017; 23:3447-3454. [PMID: 28083957 DOI: 10.1002/chem.201605485] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Indexed: 01/11/2023]
Abstract
The paddlewheel-shaped complex [Sb(μ-pyS)4 Rh]2 (1) (pyS- = 2-S-C5 H4 N- ) was synthesized from [Rh(pyS)(cod)]2 (cod=1,5-cyclooctadiene) and Sb(pyS)3 . Upon oxidation with ONMe3 , the complex [(μ-O)Sb(μ-pyS)3 Rh(κ2 -pyS)]2 (2) is formed. Both 1 and 2 form dimers and feature short Rh-Sb bonds and bridging pyS ligands. 121 Sb Mössbauer spectro- scopy and computational studies were employed to elucidate the Rh-Sb bonding in 1 and 2. Both covalent (Rh-Sb, X-type Sb ligand) and dative (Rh→Sb, Z-type; Rh←Sb L-type Sb ligand) interactions have to be considered for the description of their bonding situations.
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Affiliation(s)
- Erik Wächtler
- Institut für Anorganische Chemie, TU Bergakademie Freiberg, Leipziger Straße 29, 09596, Freiberg, Germany.,Departamento Química Inorgánica-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Luis A Oro
- Departamento Química Inorgánica-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Manuel Iglesias
- Departamento Química Inorgánica-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Birgit Gerke
- Institut für Anorganische und Analytische Chemie, WWU Münster, Corrensstraße 30, 48149, Münster, Germany
| | - Rainer Pöttgen
- Institut für Anorganische und Analytische Chemie, WWU Münster, Corrensstraße 30, 48149, Münster, Germany
| | - Robert Gericke
- Institut für Anorganische Chemie, TU Bergakademie Freiberg, Leipziger Straße 29, 09596, Freiberg, Germany
| | - Jörg Wagler
- Institut für Anorganische Chemie, TU Bergakademie Freiberg, Leipziger Straße 29, 09596, Freiberg, Germany
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15
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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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16
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Henker J, Wirmer-Bartoschek J, Bendel LE, Xiang Y, Fu C, Harms K, Schwalbe H, Meggers E. Progress in the Synthesis and Bioactivity of Hexacoordinate Silicon(IV) Complexes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600953] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jens Henker
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Julia Wirmer-Bartoschek
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue Strasse 7 60438 Frankfurt Germany
| | - Lars Erik Bendel
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue Strasse 7 60438 Frankfurt Germany
| | - Yonggang Xiang
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Chen Fu
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Klaus Harms
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Harald Schwalbe
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue Strasse 7 60438 Frankfurt Germany
| | - Eric Meggers
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
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17
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Peloquin DM, Schmedake TA. Recent advances in hexacoordinate silicon with pyridine-containing ligands: Chemistry and emerging applications. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.02.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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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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19
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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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20
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Marckwordt A, Rajasekharan‐Nair R, Steel G, Kennedy AR, Reglinski J, Spicer MD. The First Structurally Characterised Example of Silicon in an S6 Coordination Sphere. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501269] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Annemarie Marckwordt
- Department of Pure & Applied Chemistry University of Strathclyde 295 Cathedral Street G1 1XL Glasgow UK
| | - Rajeev Rajasekharan‐Nair
- Department of Pure & Applied Chemistry University of Strathclyde 295 Cathedral Street G1 1XL Glasgow UK
| | - Graham Steel
- Department of Pure & Applied Chemistry University of Strathclyde 295 Cathedral Street G1 1XL Glasgow UK
| | - Alan R. Kennedy
- Department of Pure & Applied Chemistry University of Strathclyde 295 Cathedral Street G1 1XL Glasgow UK
| | - John Reglinski
- Department of Pure & Applied Chemistry University of Strathclyde 295 Cathedral Street G1 1XL Glasgow UK
| | - Mark D. Spicer
- Department of Pure & Applied Chemistry University of Strathclyde 295 Cathedral Street G1 1XL Glasgow UK
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21
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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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22
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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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23
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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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24
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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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25
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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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26
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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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27
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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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28
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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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29
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Junold K, Nutz M, Baus JA, Burschka C, Fonseca Guerra C, Bickelhaupt FM, Tacke R. The Donor-Stabilized Silylene Bis[N,N′-diisopropylbenzamidinato(−)]silicon(II): Synthesis, Electronic Structure, and Reactivity. Chemistry 2014; 20:9319-29. [DOI: 10.1002/chem.201402483] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Indexed: 11/09/2022]
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30
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Breiding T, Henker J, Fu C, Xiang Y, Glöckner S, Hofmann P, Harms K, Meggers E. Synthesis and Functionalization of Hexacoordinate (Arenediolato)bis(polypyridyl)silicon(IV) Complexes. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tom Breiding
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35043 Marburg, Germany, http://www.uni‐marburg.de/fb15/ag‐meggers
| | - Jens Henker
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35043 Marburg, Germany, http://www.uni‐marburg.de/fb15/ag‐meggers
| | - Chen Fu
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35043 Marburg, Germany, http://www.uni‐marburg.de/fb15/ag‐meggers
| | - Yonggang Xiang
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35043 Marburg, Germany, http://www.uni‐marburg.de/fb15/ag‐meggers
| | - Steffen Glöckner
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35043 Marburg, Germany, http://www.uni‐marburg.de/fb15/ag‐meggers
| | - Philipp Hofmann
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35043 Marburg, Germany, http://www.uni‐marburg.de/fb15/ag‐meggers
| | - Klaus Harms
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35043 Marburg, Germany, http://www.uni‐marburg.de/fb15/ag‐meggers
| | - Eric Meggers
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35043 Marburg, Germany, http://www.uni‐marburg.de/fb15/ag‐meggers
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
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31
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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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32
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Weiß J, Sinner K, Baus JA, Burschka C, Tacke R. Neutral Hexacoordinate Silicon(IV) Complexes with aSiO4NC orSiO3N2C Skeleton and Neutral Pentacoordinate Silicon(IV) Complexes Containing a Trianionic TetradentateO,N,O,OLigand. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301185] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Weiß J, Theis B, Baus JA, Burschka C, Bertermann R, Tacke R. Neutral Pentacoordinate Silicon(IV) Complexes with a Tridentate DianionicO,N,OorN,N,OLigand, an Anionic PhX Ligand (X = O, S, Se), and a Phenyl Group: Synthesis and Structural Characterization in the Solid State and in Solution. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300523] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Junold K, Baus JA, Burschka C, Vent-Schmidt T, Riedel S, Tacke R. Five-coordinate silicon(II) compounds with Si-M bonds (M = Cr, Mo, W, Fe): Bis[N,N'-diisopropylbenzamidinato(-)]silicon(II) as a ligand in transition-metal complexes. Inorg Chem 2013; 52:11593-9. [PMID: 24063513 DOI: 10.1021/ic401954e] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Reaction of the donor-stabilized silylene 1 with [Cr(CO)6], [Mo(CO)6], [W(CO)6], or [Fe(CO)5] leads to the formation of the transition-metal silylene complexes 2-5, which contain five-coordinate silicon(II) moieties with Si-M bonds (M = Cr, Mo, W, Fe). These compounds were characterized by NMR spectroscopic studies in the solid state and in solution and by crystal structure analyses. These experimental investigations were complemented by computational studies to gain insight into the bonding situation of 2-5. The nature of the Si-M bonds is best described as a single bond.
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Affiliation(s)
- Konstantin Junold
- Institut für Anorganische Chemie, Universität Würzburg , Am Hubland, 97074 Würzburg, Germany
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