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Scarpi-Luttenauer M, Mobian P, Barloy L. Synthesis, structure and functions of discrete titanium-based multinuclear architectures. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214439] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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2
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Pérez-Pérez J, Hernández-Balderas U, Martínez-Otero D, Moya-Cabrera M, Jancik V. Hetero-bimetallic alkali titanosilicates [MOTi{OSi(O tBu) 3} 3] 2 (M = Li-Cs) with terminal Ti-O - groups. Dalton Trans 2022; 51:6148-6152. [PMID: 35363240 DOI: 10.1039/d2dt00939k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The molecular titanosilicate [(tBuO3)3SiO]3TiNEt2 (1) was obtained from the reaction between silanol (tBuO3)3SiOH and titanium amide Ti(NEt2)4. The reaction of 1 with alkali metal hydroxides MOH (M = Li, Na, K, Rb, Cs) offers a straightforward route to the alkaline salts of titanosilicates [MOTi{OSi(OtBu)3}3]2 with a terminal Ti-O- moiety. All compounds were characterised by single-crystal X-ray diffraction studies. Hirshfeld atom refinement and QTAIM analysis of the electron density in 1 and in the Rb salt 5 revealed the D-A nature of the Ti-O and Ti-N bonds and the presence of agostic C-H⋯Rb interactions.
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Affiliation(s)
- Jovana Pérez-Pérez
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México, 04510, Mexico. .,Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km 14.5, 50200 Toluca, Estado de México, Mexico
| | - Uvaldo Hernández-Balderas
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México, 04510, Mexico. .,Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km 14.5, 50200 Toluca, Estado de México, Mexico
| | - Diego Martínez-Otero
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México, 04510, Mexico. .,Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km 14.5, 50200 Toluca, Estado de México, Mexico
| | - Mónica Moya-Cabrera
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México, 04510, Mexico. .,Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km 14.5, 50200 Toluca, Estado de México, Mexico
| | - Vojtech Jancik
- Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México, 04510, Mexico. .,Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Carr. Toluca-Atlacomulco km 14.5, 50200 Toluca, Estado de México, Mexico
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Hikino T, Fujino K, Sato N, Wada H, Kuroda K, Shimojima A. One-step Synthesis of Nanoporous Titanosiloxane-based Materials with Isolated Ti Sites Using Cage Siloxane as a Building Block. CHEM LETT 2021. [DOI: 10.1246/cl.210311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takuya Hikino
- Department of Advanced Science and Engineering, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Koki Fujino
- Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Naoto Sato
- Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Hiroaki Wada
- Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
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4
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Coordination chemistry of organometallic or inorganic binary group 14/16 units towards d-block and f-block metal atoms. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.09.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Bhat GA, Verma S, Rajendran A, Murugavel R. Thermolabile Organotitanium Monoalkyl Phosphates: Synthesis, Structures, and Utility as Epoxidation Catalysts and Single-Source Precursors for TiP 2O 7. Inorg Chem 2018; 57:7644-7654. [PMID: 29906112 DOI: 10.1021/acs.inorgchem.8b00611] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of [Cp*TiCl3] (Cp* = C5Me5) with monoalkyl phosphates (RO)PO3H2 (R = Me, Et, and iPr) in tetrahydrofuran (THF) at 25 °C leads to the formation of binuclear complexes [Cp*2Ti2(μ-O2P(OH)OR)2(μ-O2P(O)OR)2] [R = Me (1), Et (2), and iPr (3)]. On the other hand, the reaction of ( tBuO)2PO2K with [Cp*TiCl3] in acetonitrile or THF results in isolation of either the dinuclear [Cp*2Ti2(μ-O2P(OH)O tBu)2(μ-O2P(O)O tBu)2] (4) or the trinuclear titanophosphate [Cp*3Ti3(μ-O3PO tBu)2(μ-O)2(μ-O2P(O tBu)2)] (5), respectively. The formation of compounds 4 and 5 is facilitated by partial hydrolysis of the tert-butoxy groups of ( tBuO)2PO2K. New titanophosphates 1-5 have been characterized by spectroscopic and analytical methods, and the molecular structures have further been confirmed by single-crystal X-ray diffraction studies. Thermal decomposition studies of 1-5 reveal the initial loss of thermally labile alkyl substituents of the organophosphate ligands, followed by the loss of C5Me5 groups to form an organic-free amorphous titanophosphate in the temperature range 300-500 °C. This material transforms to highly crystalline titanium pyrophosphate TiP2O7 at 800 °C. Compounds 1-5 and the TiP2O7 materials obtained at 300, 500, and 800 °C through the thermal decomposition of 3 have been employed as efficient homogeneous catalysts for the alkene epoxidation reaction. Using hydrogen peroxide as the oxidant in an acetonitrile medium, these catalysts exhibit >90% alkene conversion with >90% epoxide selectivity in 4 h at temperatures below 100 °C.
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Affiliation(s)
- Gulzar A Bhat
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| | - Sonam Verma
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| | - Antony Rajendran
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
| | - Ramaswamy Murugavel
- Department of Chemistry , Indian Institute of Technology Bombay (IIT-Bombay) , Powai, Mumbai 400076 , India
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6
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Santhana Raj Prabhu M, Ugandhar U, Baskar V. In situ generated polysiloxanes stabilizing μ3-oxo bridged Sb3 triangles. Dalton Trans 2016; 45:6963-7. [PMID: 26986494 DOI: 10.1039/c5dt01590a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The reaction of RSbO3H2 with t-butylsilanetriol has led to the isolation of organoantimony(v) based molecular triangles stabilized by siloxane frameworks. Depending on the reaction conditions employed or the substituents present on the antimony atom, either a combination of a disiloxane and a tetrasiloxane framework or a trisiloxane framework was generated in situ leading to the stabilization of the Sb3 triangle.
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Affiliation(s)
| | - Uppara Ugandhar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India.
| | - Viswanathan Baskar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, Telangana, India.
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7
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A Theoretical Study of the Insertion of Atoms and Ions into Titanosilsequioxane (Ti-POSS) in Comparison with POSS. INT J POLYM SCI 2012. [DOI: 10.1155/2012/391325] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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8
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Designing Molecular Catalysts with Enhanced Lewis Acidity. ADVANCES IN CATALYSIS 2011. [DOI: 10.1016/b978-0-12-387772-7.00001-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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9
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Murugavel R, Shanmugan S. Assembling metal phosphonates in the presence of monodentate-terminal and bidentate-bridging pyridine ligands. Use of non-covalent and covalent-coordinate interactions to build polymeric metal–phosphonate architectures. Dalton Trans 2008:5358-67. [DOI: 10.1039/b805848b] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Polyhedral antimony(III) and bismuth(III) siloxanes: Synthesis, spectral studies, and structural characterization of [Sb(O3SiR)]4 and [Bi12(O3SiR)8(μ3-O)4Cl4(THF)8] (R=(2,6-iPr2C6H3)N(SiMe3)). Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2005.12.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Krempner C, Köckerling M, Reinke H, Weichert K. Trisilane-1,3-diolato Complexes of Ti and Zr: Syntheses and X-ray Crystal Structures. Inorg Chem 2006; 45:3203-11. [PMID: 16602776 DOI: 10.1021/ic0514997] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The syntheses and structures of zirconium and titanium complexes containing the novel chelating trisilane-1,3-diolate ligand [Me2Si(R2SiO)2]2- (R = SiMe3) (5)-H2 are reported. The chloride complexes [Me2Si(R2SiO)2]TiCl2 (7a) and [Me2Si(R2SiO)2]ZrCl2 x 2 THF (7b) were prepared by the reaction of MCl4 (M = Ti, Zr) with [Me2Si(R2SiO)2]2Ti (6a) and [Me2Si(R2SiO)2]2Zr (6b), which are derived from the reaction of 5 with M(NEt2)4, respectively. In the presence of TiCl4, complexes 6a and 7a undergo a ring-opening reaction to produce the dinuclear complex [Me2Si(R2SiO)2][TiCl3]2 (9). [Me2Si(R2SiO)2]TiMe2 (10) and [Me2Si(R2SiO)2]TiBnz2 (11) were prepared in moderate yields from reactions of 7a with 2 equiv of MeMgBr and BnzMgCl, respectively. According to NMR spectroscopic investigations, the reaction of the dimethyltitanium complex 10 with B(C6F5)3 led to full exchange of both methyl groups by C6F5 groups under quantitative formation of [Me2Si(R2SiO)2]Ti(C6F5)2 (12) and a mixture of B(C6F5)(3-n)Me(n), where n = 1-3. The structure of 12 is further evidenced by the preparation of an identical sample from the reaction of 7a with 2 equiv of C6F5MgBr. Refluxing an ether solution of 12 surprisingly gave [Me2Si(R2SiO)2]2TiC6F5]2O (13) as a result of ether cleavage. The structures of the complexes 7a, 7b, 9, 10, and 13 were determined by X-ray crystallography, and structural discussion of the bond parameters will be given.
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Affiliation(s)
- C Krempner
- Institut für Chemie der Universität Rostock, A.-Einstein-Strasse 3a, D-18059 Rostock, Germany.
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12
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Veith M, Voigt T, Huch V. Synthesen und Strukturen der Titan(III)-siloxane [Ti(OSiPh3)3(thf)2] und [Ti(OSiPh3)3(py)2]. Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200500359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Nehete UN, Chandrasekhar V, Roesky HW, Magull J. The Formal Conversion of SiOH Protons into Hydrides by Germanium(II) Species Leads to the Formation of the Germanium(IV) Hydride Cluster [(RSiO3GeH)4]. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200460849] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Nehete UN, Chandrasekhar V, Roesky HW, Magull J. The Formal Conversion of SiOH Protons into Hydrides by Germanium(II) Species Leads to the Formation of the Germanium(IV) Hydride Cluster [(RSiO3GeH)4]. Angew Chem Int Ed Engl 2005; 44:281-4. [PMID: 15614897 DOI: 10.1002/anie.200460849] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Umesh N Nehete
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
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15
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Murugavel R, Davis P, Shete VS. Reactivity studies, structural characterization, and thermolysis of cubic titanosiloxanes: precursors to titanosilicate materials which catalyze olefin epoxidation. Inorg Chem 2003; 42:4696-706. [PMID: 12870961 DOI: 10.1021/ic034317m] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The cubic titanosiloxane [RSiO(3)Ti(OPr(i))](4) (R = 2,6-Pr(2)(i)C(6)H(3)NSiMe(3)) (1) is found to be relatively inert in its attempted reactions with alcohols and other acidic hydrogen containing compounds. The reaction of 1 with silanol (Bu(t)O)(3)SiOH however proceeds over a period of approximately 3 months to result in the hydrolysis of (Bu(t)O)(3)SiOH and yield the transesterification product [RSiO(3)Ti(OBu(t))](4) (2) rather than the expected [RSiO(3)Ti(OSi(OBu(t))(3))](4). Products 1 and 2 have been characterized by elemental analysis, thermal analysis, and spectroscopic techniques (IR, EI-MS, and NMR). The solid-state structures of both 1 and 2 have been determined by single-crystal X-ray diffraction studies. Compounds 1 and 2 are isomorphous and crystallize in a cubic space group with a central cubic Ti(4)Si(4)O(12) core. Solid state thermolysis of 1 was carried at 450, 600, 800, 900, 1000, and 1200 degrees C in air, and the resulting titanosilicate materials 1a-f were characterized by spectroscopic (IR and DR UV), powder XRD, and electron microscopic methods. While, the presence of Ti-O-Si linkages appears to be dominant in the samples prepared at lower temperatures (450-800 degrees C), phase separation of anatase and rutile forms of TiO(2) occurs at temperatures above 900 degrees C as revealed by IR spectral and PXRD studies. The presence of octahedral titanium centers was observed by DR UV spectroscopy for the samples heated at higher temperatures. The use of new titanosilicate materials as catalysts for olefin epoxidation has been investigated. The titanosilicate materials produced at temperatures below 800 degrees C with a large number of Ti-O-Si linkages (or tetrahedral titanium centers) were found to be more active catalysts compared to the materials produced above 900 degrees C. The observed conversion in the epoxidation reactions was found to be somewhat low although the selectivity of the epoxide formation over the other possible oxidized products was found to be very good.
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Affiliation(s)
- Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India.
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16
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Nolte JO, Schneider M, Neumann B, Stammler HG, Jutzi P. Synthesis of Novel Titanasiloxanes with Ring and Cage Structures Using Sterically Demanding Substituents. Organometallics 2003. [DOI: 10.1021/om0205905] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jörn-Oliver Nolte
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Manuela Schneider
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Beate Neumann
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Hans-Georg Stammler
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Peter Jutzi
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
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17
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Hoffmann D, Reinke H, Krempner C. Dihydroxyoligosilanes as novel ligands in coordination chemistry—first synthesis of 2,5-dioxa-3,4-disilatitanacyclopentanes. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01776-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Lindemann HM, Schneider M, Neumann B, Stammler HG, Stammler A, Jutzi P. Synthesis and Reactivity of Core-Functionalized Polyhedral Titanasiloxanes. Organometallics 2002. [DOI: 10.1021/om020157v] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hans Martin Lindemann
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Manuela Schneider
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Beate Neumann
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Hans-Georg Stammler
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Anja Stammler
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Peter Jutzi
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany
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19
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Fujiwara M, Wessel H, Hyung-Suh P, Roesky HW. Formation of titanium tert-butylperoxo intermediate from cubic silicon–titanium complex with tert-butyl hydroperoxide and its reactivity for olefin epoxidation. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(01)01144-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Affiliation(s)
- Takako Kudo
- Department of Fundamental Studies, Faculty of Engineering, Gunma University, Kiryu 376-8515, Japan
| | - Mark S. Gordon
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-2030
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21
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Anantharaman G, Reddy ND, Roesky HW, Magull J. Synthesis and X-ray Crystal Structure of a Soluble Zinc Silicate Polyhedron, [(Me2NC6H4NMe2)ZnLi{O3Si(Me3Si)N(2,6-i-Pr2C6H3)}]4. Organometallics 2001. [DOI: 10.1021/om010741o] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ganapathi Anantharaman
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - N. Dastagiri Reddy
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Jörg Magull
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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22
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Ackerhans C, Böttcher P, Müller P, Roesky HW, Usón I, Schmidt HG, Noltemeyer M. Halogenodisilanes: precursors for new disilane derivatives. Inorg Chem 2001; 40:3766-73. [PMID: 11442375 DOI: 10.1021/ic0101073] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Starting from hexachloro- or hexabromodisilane a wide variety of 1,2-disubstituted tetrachlorodisilanes (RSiCl2SiCl2R) [R = Cp (2a), 4-iPrC6H4(SiMe3)N (2b), 2,6-iPr2C6H3(SiMe3)N (2c), (Me3Si)2CH (2d) (Me3Si)3C (2e), (Me3Si)3Si (2f)], tetrabromodisilanes (RSiBr2SiBr2R) [R = Cp (3a), 4-iPrC6H4(SiMe3)N (3b), (Me3Si)3Si (3f)] and the monosubstituted pentahalogenodisilanes CpSiX2SiX3 [X = Cl (4), Br (5)] were prepared. The tetrachlorodisilanes 2a-e are converted to various functionalized disilanes. Ammonolysis of 2a-e leads to the tetraaminodisilanes [RSi(NH2)2Si(NH2)2R] 6a-e. A reduction of 2d with LiAlH4 resulted in the formation of the disilane RSiH2SiH2R [R = (Me3Si)2CH] 7 and the metathesis with Me3SnF yielded the tetrafluorodisilane RSiF2SiF2R [R = (Me3Si)2CH] 8. Treatment of 6d with reagents containing H acidic protons (HX) [X = Br, I and OH] leads under elimination of NH3 to the tetrabromo- R2SiBr2SiBr2R (3d) tetraiodo- RSiI2SiI2R (9) and the tetrahydroxodisilane RSi(OH)2Si(OH)2R (10) [R = (Me3Si)2CH]. Single-crystal X-ray structural analysis of 2d, 6a, 6d, and 9 are reported.
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Affiliation(s)
- C Ackerhans
- Institut für Anorganische Chemie der Universität Göttingen,Tammannstrasse 4, D-37077 Göttingen, Germany
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23
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A novel cyclic titanasiloxane derived from [Ph2Si(OH)]2O: synthesis and crystal structure of [Cp*Ti(Cl)(OSiPh2OSiPh2OSiPh2O)]. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(00)00946-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Murugavel R, Prabusankar G, Shete VS, Baheti K. Metal Containing New Inorganic Ring Systems Based on Siloxane and Phosphazane Frameworks. PHOSPHORUS SULFUR 2001. [DOI: 10.1080/10426500108546565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ramaswamy Murugavel
- a Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- b Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- c Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- d Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
| | - Ganesan Prabusankar
- a Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- b Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- c Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- d Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
| | - Vivekanand S. Shete
- a Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- b Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- c Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- d Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
| | - Kanhayalal Baheti
- a Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- b Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- c Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
- d Department of Chemistry , Indian Institute of Technology-Bombay , Powai, Mumbai – 400 076, INDIA
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Smet P, Riondato J, Pauwels T, Moens L, Verdonck L. Preparation and characterization of a titanium(IV) silsesquioxane epoxidation catalyst anchored into mesoporous MCM-41. INORG CHEM COMMUN 2000. [DOI: 10.1016/s1387-7003(00)00128-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chakraborty D, Horchler S, Roesky HW, Noltemeyer M, Schmidt HG. Application of n-Bu4NHF2 as a fluorinating agent for the preparation of fluoroanions: synthesis and crystal structure of the anions [t-BuPO3AlF2]2(2-), [PhPO3AlF2]2(2-), and [(O-i-Pr)3Ti(mu-F)2(mu-O-i-Pr)Ti(O-i-Pr)3]-. Inorg Chem 2000; 39:3995-8. [PMID: 11198852 DOI: 10.1021/ic991453b] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first phosphonate anions of aluminum-containing fluorine and an anionic bridged fluoroalkoxy derivative of titanium have been realized using n-Bu4NHF2 as a fluorinating agent in organometallic synthesis. Reactions of [RPO3AlMe]4 [R = Ph (1), t-Bu] with n-Bu4NHF2 yield organic-soluble compounds of the type [n-Bu4N]2[RPO3AlF2]2 [R = Ph (2), t-Bu (3)], whereas the reaction of Ti(O-i-Pr)4 with n-Bu4NHF2 results in the formation of [n-Bu4N][O-i-Pr)3Ti(mu-F)2(mu-O-i-Pr)Ti(O-i-Pr)3] (4). These compounds have been obtained in high yields and have been adequately characterized through spectroscopic techniques and X-ray diffraction studies.
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Affiliation(s)
- D Chakraborty
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D 37077 Göttingen, Germany
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Murugavel R, Bhattacharjee M, Roesky HW. Organosilanetriols: model compounds and potential precursors for metal-containing silicate assemblies. Appl Organomet Chem 1999. [DOI: 10.1002/(sici)1099-0739(199904)13:4<227::aid-aoc842>3.0.co;2-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Walawalkar MG, Horchler S, Dietrich S, Chakraborty D, Roesky HW, Schäfer M, Schmidt HG, Sheldrick GM, Murugavel R. Novel Organic-Soluble Molecular Titanophosphonates with Cage Structures Comparable to Titanium-Containing Silicates. Organometallics 1998. [DOI: 10.1021/om971045k] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mrinalini G. Walawalkar
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Sabine Horchler
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Stefan Dietrich
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Debashis Chakraborty
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Martina Schäfer
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Hans-Georg Schmidt
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - George M. Sheldrick
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Ramaswamy Murugavel
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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Palitzsch W, Pietzsch C, Jacob K, Edelmann FT, Gelbrich T, Lorenz V, Puttnat M, Roewer G. 1,2-N,N-dimethylaminomethylferrocenyl as a ligand towards silicon. J Organomet Chem 1998. [DOI: 10.1016/s0022-328x(97)00662-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Voigt A, Murugavel R, Roesky HW, Schmidt HG. Syntheses, spectroscopy and crystal structures of new group 4 metallasiloxanes. J Mol Struct 1997. [DOI: 10.1016/s0022-2860(97)00222-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Voigt A, Murugavel R, Montero ML, Wessel H, Liu FQ, Roesky HW, Usön I, Albers T, Parisini E. Lösliche, molekulare Titanosilicate. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971090919] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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33
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Voigt A, Murugavel R, Roesky HW. Stannasiloxanes with Acyclic, Bicyclic, and Cubic Core Structures: X-ray Crystal Structure of the Bicyclic Compound [RSi(OSnPh2O)3SiR] (R = (2,6-Me2C6H3)NSiMe3). Organometallics 1996. [DOI: 10.1021/om960522g] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andreas Voigt
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Ramaswamy Murugavel
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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Murugavel R, Voigt A, Walawalkar MG, Roesky HW. Hetero- and Metallasiloxanes Derived from Silanediols, Disilanols, Silanetriols, and Trisilanols. Chem Rev 1996; 96:2205-2236. [PMID: 11848826 DOI: 10.1021/cr9500747] [Citation(s) in RCA: 428] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ramaswamy Murugavel
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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Voigt A, Murugavel R, Ritter U, Roesky HW. Infrared and 29Si NMR spectroscopic investigations on metallasiloxanes derived from organosilanetriols. J Organomet Chem 1996. [DOI: 10.1016/0022-328x(96)06319-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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