1
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Böhme U, Fels S. { N-[1-(2-Oxidophen-yl)ethyl-idene]-dl-alaninato}(pentane-1,5-di-yl)silicon(IV). IUCRDATA 2024; 9:x240228. [PMID: 38586525 PMCID: PMC10993568 DOI: 10.1107/s2414314624002281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 03/08/2024] [Indexed: 04/09/2024] Open
Abstract
The title SiIV complex, C16H21NO3Si, is built up by a tridentate dinegative Schiff base ligand bound to a sila-cyclo-hexane unit. The coordination geometry of the penta-coordinated SiIV atom is a distorted trigonal bipyramid. The presence of the sila-cyclo-hexane ring in the complex leads to an unusual coordination geometry of the SiIV atom with the N atom from the Schiff base ligand and an alkyl-C atom in apical positions of the trigonal bipyramid. There is a disorder of the methyl group at the imine bond with two orientations resolved for the H atoms [major orientation = 0.55 (3)]. In the crystal, C-H⋯O inter-actions are found within corrugated layers of mol-ecules parallel to the ab plane.
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Affiliation(s)
- Uwe Böhme
- Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany
| | - Sabine Fels
- Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany
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2
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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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3
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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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4
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Belyaeva VV, Bolgova YI, Trofimova OM. Hypervalent Intramolecular N→Si Interaction in [Methoxy(methyl)silyl] Derivatives of 8-Mercaptoquinoline: Structural and Spectral Criteria. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222020116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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(Trifluorosilyl)methyl 2-methylacrylate: Synthesis, experimental and theoretical studies. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122210] [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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Valinate and SiMe2 – An interesting couple in pentacoordinate Si-complexes: Templated generation of the dipeptide val-val and formation of an organosilicon-ammonia-adduct. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122126] [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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7
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Herbig M, Böhme U, Kroke E. Si⋯O proximity in imidosilanes – absence of orbital interactions. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2021-0118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
New N-silylated phthalimides, succinimides, and 1,8-napthalimides were synthesised by reactions of the alkali imides with chlorosilanes in THF. Six different mono-, di-, tri- and tetra-iminosilanes of the type (CH3)4–n
Si(imide)
n
were obtained and the products analysed with 1H, 13C, 29Si NMR, and Raman spectroscopy. The molecular structures of four imidosilanes have been determined by single-crystal X-ray diffraction. A characteristic structural feature of the compounds is the fact that all intramolecular Si⋯O distances are significantly below the sum of the van-der-Waals radii of silicon and oxygen of 3.62 Å. Experimentally found values for Si⋯O distances range from 2.813 to 3.030 Å. However, there are no significant orbital interactions between silicon and oxygen atoms, as shown by quantum chemical analysis with AIM and NBO methods. The short Si⋯O distances in these molecules are caused by the geometry of the rigid imide group bound to the silicon atom, and there is no evidence for an increase of the coordination number of the Si atoms.
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Affiliation(s)
- Marcus Herbig
- Institut für Anorganische Chemie, TU Bergakademie Freiberg , Leipziger Straße 29, 09599 Freiberg , Germany
| | - Uwe Böhme
- Institut für Anorganische Chemie, TU Bergakademie Freiberg , Leipziger Straße 29, 09599 Freiberg , Germany
| | - Edwin Kroke
- Institut für Anorganische Chemie, TU Bergakademie Freiberg , Leipziger Straße 29, 09599 Freiberg , Germany
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8
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Trofimova O, Grebneva E, Bolgova Y, Belogolova E, Emel’yanov A, Albanov A, Borodina T, Ivanova A, Korzhova S, Pozdnyakov A. The synthesis, characterization, and theoretical analysis of novel Si-substituted silylethyl derivatives of 2-mercaptobenzoxazole and 2-mercaptobenzothiazole. NEW J CHEM 2021. [DOI: 10.1039/d1nj00793a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Trifluorosilylethyl derivatives of 2-mercaptobenzoxazole and 2-mercaptobenzothiazole C6H4NYCS(CH2)2SiF3 (Y = O, S) have been synthesized in order to study the intramolecular N → Si interaction in compounds with the SiCCSCN fragment.
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Affiliation(s)
- Olga Trofimova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Ekaterina Grebneva
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Yuliya Bolgova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Elena Belogolova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Artem Emel’yanov
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Alexander Albanov
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Tat’yana Borodina
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Anastasiya Ivanova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Svetlana Korzhova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
| | - Alexander Pozdnyakov
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy Sciences
- 664033 Irkutsk
- Russian Federation
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9
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Jabłońska J, Kluska M, Erchak N. The challenge of separating and determining biologically active electrostatically stabilized silanates using the high-performance liquid chromatography technique. J Sep Sci 2020; 43:3399-3407. [PMID: 32567759 DOI: 10.1002/jssc.202000453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/15/2020] [Accepted: 06/17/2020] [Indexed: 11/10/2022]
Abstract
We present the results of research on the optimal conditions for the separation and determination of newly obtained hypercoordinated compounds, which belong to the group of electrostatically stabilized silanates. The research involved five stationary and four mobile phases. The best selectivity was obtained using the graphite phase and the mobile phase consisting of acetonitrile/water (80/20). The maximum selectivity of the determined electrostatically stabilized silanates was 1.13 and 1.06 for (1), (2), (3); 1.10 and 1.15 for (4), (5), (6); and 1.12 and 1.15 for (7), (8), (9). The octadecyl phase (which is recommended as standard) did not yield satisfactory results.
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Affiliation(s)
- Joanna Jabłońska
- Faculty of Exact and Natural Sciences, Siedlce University of Natural Sciences and Humanities, Siedlce, Poland
| | - Mariusz Kluska
- Faculty of Exact and Natural Sciences, Siedlce University of Natural Sciences and Humanities, Siedlce, Poland
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10
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Wang Y, Tope CA, Xie Y, Wei P, Urbauer JL, Schaefer HF, Robinson GH. Carbene-Stabilized Disilicon as a Silicon-Transfer Agent: Synthesis of a Dianionic Silicon Tris(dithiolene) Complex. Angew Chem Int Ed Engl 2020; 59:8864-8867. [PMID: 32154633 DOI: 10.1002/anie.201916395] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Indexed: 11/11/2022]
Abstract
Reaction of carbene-stabilized disilicon (1) with the lithium-based dithiolene radical (2. ) affords the first dianionic silicon tris(dithiolene) complex (3). Notably, the formation of 3 represents the unprecedented utilization of carbene-stabilized disilicon (1) as a silicon-transfer agent. The nature of 3 was probed by multinuclear NMR spectroscopy, single-crystal X-ray diffraction, and DFT computations.
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Affiliation(s)
- Yuzhong Wang
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, GA, 30602-2556, USA
| | - Cynthia A Tope
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, GA, 30602-2556, USA
| | - Yaoming Xie
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, GA, 30602-2556, USA
| | - Pingrong Wei
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, GA, 30602-2556, USA
| | - Jeffrey L Urbauer
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, GA, 30602-2556, USA
| | - Henry F Schaefer
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, GA, 30602-2556, USA
| | - Gregory H Robinson
- Department of Chemistry and the Center for Computational Chemistry, The University of Georgia, Athens, GA, 30602-2556, USA
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11
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Negrebetsky V, Korlyukov A, Bylikin SY, Kramarova E, Baukov Y. Synthesis, molecular and crystal structure, and stereochemical non-rigidity of (O→Ge)-Bischelate bis[1-(2-oxoperhydroazepinyl)methyl]bromogermanium iodide and triflate. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Wang Y, Tope CA, Xie Y, Wei P, Urbauer JL, Schaefer HF, Robinson GH. Carbene‐Stabilized Disilicon as a Silicon‐Transfer Agent: Synthesis of a Dianionic Silicon Tris(dithiolene) Complex. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916395] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuzhong Wang
- Department of Chemistry and the Center for Computational Chemistry The University of Georgia Athens GA 30602-2556 USA
| | - Cynthia A. Tope
- Department of Chemistry and the Center for Computational Chemistry The University of Georgia Athens GA 30602-2556 USA
| | - Yaoming Xie
- Department of Chemistry and the Center for Computational Chemistry The University of Georgia Athens GA 30602-2556 USA
| | - Pingrong Wei
- Department of Chemistry and the Center for Computational Chemistry The University of Georgia Athens GA 30602-2556 USA
| | - Jeffrey L. Urbauer
- Department of Chemistry and the Center for Computational Chemistry The University of Georgia Athens GA 30602-2556 USA
| | - Henry F. Schaefer
- Department of Chemistry and the Center for Computational Chemistry The University of Georgia Athens GA 30602-2556 USA
| | - Gregory H. Robinson
- Department of Chemistry and the Center for Computational Chemistry The University of Georgia Athens GA 30602-2556 USA
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13
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Frogley BJ, Hill AF, Sharma M, Sinha A, Ward JS. Semi-bridging σ-silyls as Z-type ligands. Chem Commun (Camb) 2020; 56:3532-3535. [DOI: 10.1039/c9cc07763d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of SiHPh(NCH2PPh2)2C6H4-1,2 with zerovalent group 10 reagents afford the homoleptic bimetallic complexes [M2{μ-κ3-Si,P,P′-SiPh(CH2PPh2)2C6H4}2] (M = Ni, Pd, Pt) in which the M–M bond is unsymmetrically bridged by two σ-silyl groups.
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Affiliation(s)
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Manab Sharma
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Arup Sinha
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Jas S. Ward
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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14
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Synthesis and structure of novel Si-substituted silylpropyl derivatives of 2-mercaptobenzoxazole and 2-mercaptobenzothiazole. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02532-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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van der Boon LJP, Hendriks JH, Roolvink D, O'Kennedy SJ, Lutz M, Slootweg JC, Ehlers AW, Lammertsma K. Dynamic Conformational Behavior in Stable Pentaorganosilicates. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900641] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Leon J. P. van der Boon
- Faculty of Sciences; Vrije Universiteit Amsterdam; De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Jesper H. Hendriks
- Faculty of Sciences; Vrije Universiteit Amsterdam; De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Danny Roolvink
- Faculty of Sciences; Vrije Universiteit Amsterdam; De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Sean J. O'Kennedy
- Department of Chemistry and Polymer Science; Stellenbosch University; Private Bag X1 7602 Matieland South Africa
| | - Martin Lutz
- Crystal and Structural Chemistry; Bijvoet Center for Biomolecular Research; Utrecht University; Padualaan 8 3584 Utrecht The Netherlands
| | - J. Chris Slootweg
- Faculty of Sciences; Vrije Universiteit Amsterdam; De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1090 GD Amsterdam The Netherlands
| | - Andreas W. Ehlers
- Faculty of Sciences; Vrije Universiteit Amsterdam; De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1090 GD Amsterdam The Netherlands
- Department of Chemistry; Science Faculty; University of Johannesburg; 254, Auckland Park Johannesburg South Africa
| | - Koop Lammertsma
- Faculty of Sciences; Vrije Universiteit Amsterdam; De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Department of Chemistry; Science Faculty; University of Johannesburg; 254, Auckland Park Johannesburg South Africa
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16
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Wang Y, DeCarlo S, Wang L, Stevens L, Chen F, Zavalij P, Eichhorn B. Synthesis and Characterization of the {Si(NHCH 2CH 2NH) 3[Mo(CO) 3] 2} 2- Complex Comprising the Si(NHCH 2CH 2NH) 32- Octahedron. Inorg Chem 2019; 58:8915-8917. [PMID: 31247833 DOI: 10.1021/acs.inorgchem.9b01122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reactions of K12Si17 with the low-valent transition-metal complex Mo(CO)3(C7H8) in ethylenediamine/toluene solutions in the presence of 2,2,2-cryptand yield the {Si(NHCH2CH2NH)3[Mo(CO)3]2}2- dianion, which contains an octahedral Si(NHCH2CH2NH)32- subunit. The SiN6 core comprises a rare example of a doubly deprotonated ethylenediame ligand in a coordination complex and is also the first structurally characterized example of a homoleptic Si(N∩N)3 trischelate. Its structure and spectroscopic properties are described.
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Affiliation(s)
- Yi Wang
- Department of Chemistry and Biochemistry , University of Maryland , College Park , Maryland 20742 , United States
| | - Samantha DeCarlo
- Department of Chemistry and Biochemistry , University of Maryland , College Park , Maryland 20742 , United States
| | - Luning Wang
- Department of Chemistry and Biochemistry , University of Maryland , College Park , Maryland 20742 , United States
| | - Lauren Stevens
- Department of Chemistry and Biochemistry , University of Maryland , College Park , Maryland 20742 , United States
| | - Fu Chen
- Department of Chemistry and Biochemistry , University of Maryland , College Park , Maryland 20742 , United States
| | - Peter Zavalij
- Department of Chemistry and Biochemistry , University of Maryland , College Park , Maryland 20742 , United States
| | - Bryan Eichhorn
- Department of Chemistry and Biochemistry , University of Maryland , College Park , Maryland 20742 , United States
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17
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Gelmboldt VO. To the Properties of Fluorosilicic Acid: Evolution of Views on the State in Aqueous Solutions (Overview). RUSS J INORG CHEM+ 2018. [DOI: 10.1134/s003602361813003x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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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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19
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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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20
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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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Szalay R, Harmat V, Eőri J, Pongor G. Strong influence of intramolecular Si⋯O proximity on reactivity: Systematic molecular structure, solvolysis, and mechanistic study of cyclic N -trimethylsilyl carboxamide derivatives. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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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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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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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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Aksamentova TN, Chipanina NN, Grebneva EA, Timofeeva EN, Bolgova YI, Trofimova OM. DFT study of the 1-aryl-1-fluoro-5-methylquasisilatrane stereoisomers. NBO and QTAIM analysis. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.07.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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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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Schiff base functionalized Organopropylsilatranes: Synthesis and structural characterization. J CHEM SCI 2016. [DOI: 10.1007/s12039-015-1026-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Singh G, Promila, Saroa A, Singh J, Rani S, Singh B, Choquesillo-Lazarte D. Synthesis, X-Ray Structure and Anti-Bacterial Studies of 1,3-Thiazolylpropylsilatranes. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2015.1049743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Gurjaspreet Singh
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Punjab University, Chandigarh, 160014, India
| | - Promila
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Punjab University, Chandigarh, 160014, India
| | - Amandeep Saroa
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Punjab University, Chandigarh, 160014, India
| | - Jandeep Singh
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Punjab University, Chandigarh, 160014, India
| | - Sunita Rani
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Punjab University, Chandigarh, 160014, India
| | - Baljinder Singh
- Department of Biotechnology, Punjab University, Chandigarh, 160014, India
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT–CSIC. Avda. de las Palmeras 4, 18100- Armilla (Granada), Spain
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Neutral pentacoordinate silicon complexes with SiO2FC skeleton: Synthesis, structural characterization and stereodynamical behavior. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.05.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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