1
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Imaizumi A, Nakada A, Matsumoto T, Yokoi T, Chang HC. Synthesis of Microporous Aluminosilicate by Direct Thermal Activation of Phenyl-Substituted Single-Source Aluminosilicate Molecular Precursors. Inorg Chem 2022; 61:13481-13496. [PMID: 35976816 DOI: 10.1021/acs.inorgchem.2c02006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The construction of aluminosilicates from versatile molecular precursors (MPs) represents a promising alternative strategy to conventional processes based on monomeric molecular or polymeric Al and Si sources. However, the use of MPs often suffers from drawbacks such as the decomposition of the core structures in the presence of solvents, acids, or bases. In this work, we demonstrate a simple thermal synthesis of porous aluminosilicates from single-source spiro-7-type MPs that consist of a tetrahedral Al atom and six Si atoms functionalized with 12 phenyl (Ph) groups, (C+)[Al{Ph2Si(OSiPh2O)2}2]- (C+[AlSi6]-; C+ = pyridinium cation (PyH+), Na+, K+, Rb+, or Cs+), without using a solvent or activator. Microporous aluminosilicates synthesized via the thermal treatment of C+[AlSi6]- under a 79% N2 + 21% O2 atmosphere exhibited extremely low carbon contents (0.10-1.28%), together with Si/Al ratios of 3.9-6.7 ± 0.2 and surface areas of 103.1-246.3 m2/g. The solid-state 27Al and 29Si MAS NMR spectra suggest that the obtained aluminosilicates with alkali cations retain a tetrahedral Al site derived from the spiro-7-type core structure. After a proton-exchange reaction, the aluminosilicates showed almost 1.5 times higher reactivity in the catalytic ring-opening of styrene oxide than the aluminosilicate before proton exchange due to the catalytically active OH site being predominantly bridged by tetrahedral Al and Si atoms. These results suggest that the present MP strategy is a promising method for the introduction of key structures into active inorganic materials.
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Affiliation(s)
- Akira Imaizumi
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Akinobu Nakada
- Department of Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.,Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takeshi Matsumoto
- Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan
| | - Toshiyuki Yokoi
- Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan.,Tokyo Tech World Research Hub Initiative (WRHI), Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan
| | - Ho-Chol Chang
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
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2
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Ghosh T, Kedarnath G, Mobin SM. A Highly Active Nitrogen‐Doped Mixed‐Phase Mixed‐Valence Cobalt Nanocatalyst for Olefins and Nitroarenes Hydrogenation. ChemistrySelect 2022. [DOI: 10.1002/slct.202200204] [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)
- Topi Ghosh
- Discipline of Chemistry Indian Institute of Technology Indore, Simrol Khandwa Road Indore 453552 India
| | - Gotluru Kedarnath
- Chemistry Division Bhabha Atomic Research Centre Mumbai 400 085 India
- Homi Bhabha National Institute, Anushaktinagar Mumbai 400 094 India
| | - Shaikh M. Mobin
- Discipline of Chemistry Indian Institute of Technology Indore, Simrol Khandwa Road Indore 453552 India
- Discipline of Metallurgy Engineering and Materials Science Indian Institute of Technology Indore, Simrol Khandwa Road Indore 453552 India
- Discipline of Biosciences and Bio-Medical Engineering Indian Institute of Technology Indore, Simrol Khandwa Road Indore 453552 India
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3
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Verma S, Murugavel R. Alkali Metal Di- tert-butyl Phosphates: Single-Source Precursors for Homo- and Heterometallic Inorganic Phosphate Materials. Inorg Chem 2022; 61:6807-6818. [PMID: 35473360 DOI: 10.1021/acs.inorgchem.2c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of alkali metal acetates, M(OAc)·nH2O (M = Li, Na, K), with thermally and hydrolytically unstable di-tert-butylphosphate ((tBuO)2PO2H, dtbp-H) in a 1:1 molar ratio in MeOH at room temperature leads to clean formation of group 1 metal phosphates [Li(μ-dtbp)]n (1), [Na(μ-dtbp)]n (2), and [K4(μ-dtbp)4(μ-H2O)3]n (3). All three compounds are essentially M/L 1:1 complexes. Owing to the presence of larger potassium ions, additional coordinated water molecules are found in 3, which has been further employed as a precursor for the synthesis of a mixed-metal phosphate polymer [CaK(μ-H2O)3(μ-dtbp)3]n (4) by reacting 3 with Ca(OAc)2. Compounds 1-4 have been characterized by various analytical and spectroscopic techniques. Molecular structures of 1-4 have been established in the solid state by single-crystal X-ray diffraction studies, which reveal them to be one-dimensional polymers, where the adjacent metal centers are connected through -O-P-O- bridges formed by the dtbp ligand. These complexes are rare examples of analytically pure alkali metal alkyl phosphates bearing no additional N-donor ligands (other than dtbp ligands, only water molecules are coordinated to the metal centers). Therefore, these compounds can be employed as single-source precursors (SSPs) for nano-sized ceramic phosphates. The thermogravimetric analysis of 1-4 reveals the loss of thermally labile tert-butyl substituents of the organophosphate ligands to form organic-free phosphate materials in the temperature range 300-500 °C. Solvothermal decomposition of 1-3 in boiling toluene leads to the formation of corresponding dihydrogen phosphates M(H2PO4) (M = Li, Na, and K). The thermal decomposition of heterometallic 4 in the temperature range 400-800 °C leads to the formation of phase-pure mixed-metal calcium potassium metaphosphate CaK(PO3)3.
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Affiliation(s)
- Sonam Verma
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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4
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Mortis A, Maichle-Mössmer C, Anwander R. Yttrium tris(trimethylsilylmethyl) complexes grafted onto MCM-48 mesoporous silica nanoparticles. Dalton Trans 2021; 51:1070-1085. [PMID: 34939637 DOI: 10.1039/d1dt03876a] [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
A series of tris(trimethylsilylmethyl) yttrium donor adduct complexes was synthesized and fully characterized by X-ray diffraction, 1H/13C/29Si/31P/89Y heteronuclear NMR and FTIR spectroscopies as well as elemental analyses. Treatment of Y(CH2SiMe3)3(thf)x with various donors Do led to complete (Do = TMEDA, DMAP) and partial displacement of THF (Do = NHCiPr, DMPE). Exceptionally large 89Y NMR shifts to low field were observed for the new complexes. Complexes Y(CH2SiMe3)3(tmeda) and Y(CH2SiMe3)3(dmpe)(thf) were chosen to perform surface organometallic chemistry, due to a comparatively higher thermal stability and the availability of the 31P nucleus as a spectroscopic probe, respectively. Mesoporous nanoparticles of the MCM-48-type were synthesized and used as a 3rd generation silica support. The parent and hybrid materials were characterized using X-ray powder diffraction, solid-state-NMR spectroscopy, DRIFTS, elemental analyses, N2-physisorption, and scanning electron microscopy (SEM). The presence of surface-bound yttrium alkyl moieties was further proven by the reaction with carbon dioxide. Quantification of the surface silanol population by means of HN(SiHMe2)2-promoted surface silylation is shown to be superior to titration with lithium alkyl LiCH2SiMe3.
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Affiliation(s)
- Alexandros Mortis
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.
| | - Cäcilia Maichle-Mössmer
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.
| | - Reiner Anwander
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.
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5
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Ishizaka Y, Arai N, Matsumoto K, Nagashima H, Takeuchi K, Fukaya N, Yasuda H, Sato K, Choi JC. Bidentate Disilicate Framework for Bis-Grafted Surface Species. Chemistry 2021; 27:12069-12077. [PMID: 34189785 DOI: 10.1002/chem.202101927] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Indexed: 11/08/2022]
Abstract
Recent advances in surface organometallic chemistry have enabled the detailed characterization of the surface species in single-site heterogeneous catalysts. However, the selective formation of bis-grafted surface species remains challenging because of the heterogeneity of the supporting surface. Herein, we introduce a metal complex bearing bidentate disilicate ligands, -OSi(Ot Bu)2 OSi(Ot Bu)2 O-, as a molecular precursor, which has a silicate framework adjacent to the metal (Pt) center. The grafting of the precursors on silica supports (MCM-41 and CARiACT Q10) proceeded through a substitution reaction on the silicon atoms of the disilicate ligand, which was verified by the detection of isobutene and t BuOH as the elimination products, to selectively yield bis-grafted surface species. The chemical structure of the surface species was characterized by solid-state NMR, and the chemical shift values of the ancillary ligands and 195 Pt nuclei suggested that the bidentate coordination sphere was maintained following grafting.
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Affiliation(s)
- Yusuke Ishizaka
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan.,Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Natsumi Arai
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki, 310-8512, Japan
| | - Kazuhiro Matsumoto
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Hiroki Nagashima
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Katsuhiko Takeuchi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Norihisa Fukaya
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Hiroyuki Yasuda
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Kazuhiko Sato
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Jun-Chul Choi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan.,Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
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6
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Ghosh T, Natarajan K, Kumar P, Mobin SM. Nitrogen-Doped Mixed-Phase Cobalt Nanocatalyst Derived from a Trinuclear Mixed-Valence Cobalt(III)/Cobalt(II) Complex for High-Performance Oxygen Evolution Reaction. Inorg Chem 2021; 60:2333-2346. [PMID: 33502850 DOI: 10.1021/acs.inorgchem.0c03202] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Because of a continuous increase in energy demands and environmental concerns, a focus has been on the design and construction of a highly efficient, low-cost, environmentally friendly, and noble-metal free electrocatalyst for energy technology. Herein we report facile synthesis of the mixed-valence trinuclear cobalt complex 1 by the reaction of 2-amino-1-phenylethanol and CoCl2·6H2O in methanol as the solvent at room temperature. Further, 1 was reduced by using aqueous N2H4 as a simple reducing agent, followed by calcination at 300 °C for 3 h, yielding a nitrogen-doped mixed phase cobalt [β-Co(OH)2 and CoO] nanocatalyst (N@MPCoNC). Both 1 and N@MPCoNC were characterized by various physicochemical techniques. Moreover, 1 was authenticated by single-crystal X-ray diffraction studies. The hybrid N@MPCoNC reveals a unique electronic and morphological structure, offering a low overpotential of 390 mV for a stable current density of 10 mA cm-2 with high durability. This N@MPCoNC showed excellent electrocatalytic as well as photocatalytic activity for oxygen evolution reaction compared to 1.
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7
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Cyclopentadienyl Removal Assisted Nuclearity Expansion in Thermolabile Titanium and Zirconium Organophosphates Sourced from Metallocene Dichlorides. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2020.121642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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8
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Verma S, Murugavel R. Di- tert-butylphosphate Derived Thermolabile Calcium Organophosphates: Precursors for Ca(H 2PO 4) 2, Ca(HPO 4), α-/β-Ca(PO 3) 2, and Nanocrystalline Ca 10(PO 4) 6(OH) 2. Inorg Chem 2020; 59:13233-13244. [PMID: 32892621 DOI: 10.1021/acs.inorgchem.0c01591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thermally and hydrolytically unstable di-tert-butyl phosphate (dtbp-H) has been used as synthon to prepare discrete and polymeric calcium phosphates that are convenient single-source precursors for a range of calcium phosphate ceramic biomaterials. The reactivity of dtbp-H toward two different calcium sources has been found to vary significantly, e.g., the reaction of Ca(OMe)2 with dtbp-H in a 1:6 molar ratio in petroleum ether forms a mononuclear calcium hexa-phosphate complex [Ca(dtbp)2(dtbp-H)4] (1), whereas the change of calcium source to CaH2, in a 1:2 molar ratio under otherwise similar reaction conditions, yields the calcium phosphate polymer, [Ca(μ-dtbp)2(H2O)2·H2O]n(2). Compounds 1 and 2 have been extensively characterized by various spectroscopic and analytical techniques. The solid-state structures of both 1 and 2 have been determined by single-crystal X-ray diffraction studies. In discrete molecule 1, the central calcium ion is surrounded by two anionic dtbp and four neutral dtbp-H ligands in an octahedral coordination environment. Compound 2 is a one-dimensional polymer in which adjacent calcium ions are connected through double dtbp bridges. Solid-state thermolysis of bulk 1 in air leads to the exclusive formation of calcium metaphosphate β-Ca(PO3)2 in the entire temperature range of 400-800 °C. Thermal decomposition of polymer 2, however, can be fine-tuned to produce either α-Ca(PO3)2 or β-Ca(PO3)2 depending on the thermolysis conditions employed. Although the sample sintered at 600 °C produces exclusively α-form of Ca(PO3)2, the sample annealed at 800 °C or above produces β-form. Both α- and β-forms can also be successively formed one after other by a slow heating of a freshly prepared 2 on the powder diffractometer sample holder. Additional forms of ceramic phosphates have been prepared by solvothermal conditions because of the highly labile nature of the tert-butoxy groups of dtbp in 1 and 2. Solution decomposition of either 1 or 2 in boiling toluene at 140 °C in a sealed tube produces calcium dihydrogen phosphate [Ca(H2PO4)2·H2O] as the only product in the form of single crystals. Solution thermolysis of 2 in protic solvents such as water and methanol can be biased to produce other calcium phosphate biomaterials such as hydroxyapatite [Ca10(PO4)6(OH)2]and calcium monohydrogen phosphate [Ca(HPO4)] in the presence of additional calcium precursors such as CaO and Ca(OMe)2, respectively.
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Affiliation(s)
- Sonam Verma
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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9
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Wang Z, Patnaik S, Eedugurala N, Manzano JS, Slowing II, Kobayashi T, Sadow AD, Pruski M. Silica-Supported Organolanthanum Catalysts for C–O Bond Cleavage in Epoxides. J Am Chem Soc 2020; 142:2935-2947. [DOI: 10.1021/jacs.9b11606] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zhuoran Wang
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Smita Patnaik
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Naresh Eedugurala
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - J. Sebastián Manzano
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Igor I. Slowing
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Takeshi Kobayashi
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Aaron D. Sadow
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Marek Pruski
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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10
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Imaizumi A, Nakada A, Matsumoto T, Chang HC. Facile and selective synthesis of zeolites L and W from a single-source heptanuclear aluminosilicate precursor. CrystEngComm 2020. [DOI: 10.1039/d0ce00546k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Zeolites L and W were synthesized for the first time from a heptanuclear aluminosilicate complex as a single-source molecular precursor, highlighting the potential versatility of this approach toward the synthesis of a variety of zeolites.
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Affiliation(s)
- Akira Imaizumi
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
| | - Akinobu Nakada
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
| | - Takeshi Matsumoto
- Precursory Research for Embryonic Science and Technology (PRESTO)
- Japan Science and Technology Agency (JST)
- Saitama 332-0012
- Japan
| | - Ho-Chol Chang
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
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11
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Ghaffari B, Mendes‐Burak J, Chan KW, Copéret C. Silica‐Supported MnIISites as Efficient Catalysts for Carbonyl Hydroboration, Hydrosilylation, and Transesterification. Chemistry 2019; 25:13869-13873. [DOI: 10.1002/chem.201903638] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Behnaz Ghaffari
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Jorge Mendes‐Burak
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Ka Wing Chan
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
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12
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Petrus R, Drąg-Jarząbek A, Utko J, Lis T, Sobota P. Transformation of molecular compounds with Ba(Sr)/Al/Si and Ca(Sr, Ba)/Ti(Zr, Hf)/Si heteroelements as new efficient route to metal silicate materials. Dalton Trans 2019; 48:4283-4298. [PMID: 30859174 DOI: 10.1039/c8dt03796e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silicon-based moieties were anchored in heterometallic alkoxide platforms to obtain molecular clusters based on the M-O-M'-O-Si motif for the generation of mixed-metal silicate materials. Single-source molecular precursors with structures [M{(μ-ddbfo)2Al(OSiPh3)2}2], where dbbfoH = 2,3-dihydro-2,2-dimethylbenzofuran-7-ol and M = Ba (1), Sr (2), [Sr4Ti2(μ6-O)(μ3,η2-OCH2CH2OMe)8(η-OCH2CH2OMe)2(OSiPh3)4] (3), [Sr4M'2(μ4-OH)(μ3,η2-OCH2CH2OMe)4(μ,η2-OCH2CH2OMe)6(μ-X)(OSiPh3)4] (4, with M' = Zr and X = Cl; 5 with M' = Hf and X = OH), [Sr3Hf2(μ5-O)(μ3,η2-OCH2CH2OMe)4(OCH2CH2OMe)4(OSiPh3)4] (6), and [Ca2M'2(μ3-OH)2(μ,η2-OCH2CH2OMe)4(η2-HOCH2CH2OMe)2(η-OCH2CH2OMe)2(OSiPh3)4] for M' = Zr (7), Hf (8), were prepared by substitution of methyl groups, using Ph3SiOH or chloride atoms with KOSiPh3, in [M{(μ-ddbfo)2AlMe2}2] (M = Sr, Ba) or [M4M'2(μ6-O)(μ3,η2-OCH2CH2OMe)8(OCH2CH2OMe)2(HOCH2CH2OMe)xCl4] (M = Ca, Sr, Ba, M' = Ti, Zr, Hf and x = 0, 4). The precursors were characterized by elemental analysis, NMR spectroscopy, and single-crystal X-ray structural analysis. Thermal decomposition of compounds 1-8 at 1000 °C led to formation of ceramic materials that consisted of mixed-metal oxide nanocrystallites embedded in an amorphous SiO2 matrix. Compounds 1 and 2 decomposed to BaAl2Si2O8 and SrAl2Si2O8 aluminosilicates, 4 gave a mixture of SrSiO3, ZrO2, SrZrO3 and Sr7ZrSi6O21, 5 and 6 gave mixtures of various compounds, including SrHfO3, Hf0.96Si0.04O2, and SiO2, 7 lead to CaZrO3, ZrO2 and Ca3ZrSi2O9 and 8 gave a HfO2, Ca2HfSi4O12 and SiO2 phase. The thermolysis of compound 3 gave SiO2 particles of average size 40-90 nm, which contained spherical SrTiO3, SrSiO3 and Sr2TiSi2O8 nanocrystallites of diameter 5-16 nm.
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Affiliation(s)
- R Petrus
- Faculty of Chemistry, Wrocław University of Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland
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13
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Wang QN, Shi L, Li W, Li WC, Si R, Schüth F, Lu AH. Cu supported on thin carbon layer-coated porous SiO2 for efficient ethanol dehydrogenation. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02057k] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The designed Cu/C/SiO2 catalyst combines the favourable properties of carbon and silica, thus showing improved selectivity associated with good stability.
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Affiliation(s)
- Qing-Nan Wang
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Lei Shi
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Wei Li
- Shanghai Synchrotron Radiation Facility
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences
- Shanghai
- China
| | - Wen-Cui Li
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Rui Si
- Shanghai Synchrotron Radiation Facility
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences
- Shanghai
- China
| | - Ferdi Schüth
- Max-Planck-Institut für Kohlenforschung
- D-45470 Mülheim an der Ruhr
- Germany
| | - An-Hui Lu
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- P. R. China
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14
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Wright CMR, Ruengkajorn K, Kilpatrick AFR, Buffet JC, O’Hare D. Controlling the Surface Hydroxyl Concentration by Thermal Treatment of Layered Double Hydroxides. Inorg Chem 2017; 56:7842-7850. [PMID: 28653842 DOI: 10.1021/acs.inorgchem.7b00582] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher M. R. Wright
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Kanittika Ruengkajorn
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Alexander F. R. Kilpatrick
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Jean-Charles Buffet
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Dermot O’Hare
- Chemistry Research Laboratory, Department
of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
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15
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Bhat GA, Kalita AC, Murugavel R. Intriguing structural chemistry of neutral and anionic layered monoalkylphosphates: single-source precursors for high-yield ceramic phosphates. CrystEngComm 2017. [DOI: 10.1039/c7ce01066d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A simple protocol for multi-gram synthesis of unstable and normally inaccessible phosphate monoesters ROPO3H2 is reported, apart from demonstration of their thermal instability and utility as starting materials for metal phosphate single source precursors.
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Affiliation(s)
- Gulzar A. Bhat
- Organometallics and Materials Chemistry Lab
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Alok Ch. Kalita
- Organometallics and Materials Chemistry Lab
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Ramaswamy Murugavel
- Organometallics and Materials Chemistry Lab
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
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16
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Drąg-Jarząbek A, Petrus R, Sobota P. Synthesis of Aluminosilicates Containing a Ba(Sr)–O–Al–O–Si Arrangement of Natural Feldspar Mineral. Inorg Chem 2016; 55:9524-9527. [DOI: 10.1021/acs.inorgchem.6b01900] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anna Drąg-Jarząbek
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Rafał Petrus
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Piotr Sobota
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
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17
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Dettenrieder N, Dietrich HM, Maichle-Mössmer C, Anwander R. Yttrium Siloxide Complexes Bearing Terminal Methyl Ligands: Molecular Models for Ln−CH3Terminated Silica Surfaces. Chemistry 2016; 22:13189-200. [DOI: 10.1002/chem.201602424] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Nicole Dettenrieder
- Institute of Inorganic Chemistry; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - H. Martin Dietrich
- Institute of Inorganic Chemistry; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Cäcilia Maichle-Mössmer
- Institute of Inorganic Chemistry; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Reiner Anwander
- Institute of Inorganic Chemistry; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
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18
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Dębowski M, Łokaj K, Wolak A, Żurawski K, Plichta A, Zachara J, Ostrowski A, Florjańczyk Z. Linear coordination polymers based on aluminum phosphates: synthesis, crystal structure and morphology. Dalton Trans 2016; 45:8008-20. [PMID: 27072980 DOI: 10.1039/c6dt00153j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several aluminum tris(diorganophosphates) have been synthesized and characterized via elemental analysis, NMR, FT-IR and Raman spectroscopy, as well as powder XRD, and SEM. Single-crystal X-ray diffraction studies revealed that the aluminum tris(diethylphosphate) crystal structure comprises two crystallographically nonequivalent catena-Al[O2P(OEt)2]3 chains propagating along the c-axis. Their parallel orientation favors the formation of closely packed hexagonal domains. PXRD data suggest that other homologues have a similar structure, with the interchain distance closely corresponding to the dimensions of organic ligands. They are also susceptible to a reversible dissociation to ionic species under the effect of primary amines. This feature can be utilized for the synthesis of epoxy nanocomposites.
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Affiliation(s)
- M Dębowski
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - K Łokaj
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - A Wolak
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - K Żurawski
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - A Plichta
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - J Zachara
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - A Ostrowski
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Z Florjańczyk
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
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19
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Copéret C, Comas-Vives A, Conley MP, Estes DP, Fedorov A, Mougel V, Nagae H, Núñez-Zarur F, Zhizhko PA. Surface Organometallic and Coordination Chemistry toward Single-Site Heterogeneous Catalysts: Strategies, Methods, Structures, and Activities. Chem Rev 2016; 116:323-421. [PMID: 26741024 DOI: 10.1021/acs.chemrev.5b00373] [Citation(s) in RCA: 490] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Aleix Comas-Vives
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Matthew P Conley
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Deven P Estes
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Haruki Nagae
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland.,Department of Chemistry, Graduate School of Engineering Science, Osaka University, CREST , Toyonaka, Osaka 560-8531, Japan
| | - Francisco Núñez-Zarur
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Pavel A Zhizhko
- Department of Chemistry and Applied Biosciences, ETH Zürich , Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland.,A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilov str. 28, 119991 Moscow, Russia
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20
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Dombrowski JP, Johnson GR, Bell AT, Tilley TD. Ga[OSi(OtBu)3]3·THF, a thermolytic molecular precursor for high surface area gallium-containing silica materials of controlled dispersion and stoichiometry. Dalton Trans 2016; 45:11025-34. [DOI: 10.1039/c6dt01676f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ga[OSi(OtBu)3]3·THF was used as the first thermolytic single-source molecular precursor to generate gallium-containing silicas.
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Affiliation(s)
| | - Gregory R. Johnson
- Department of Chemical and Biomolecular Engineering
- University of California
- Berkeley
- Berkeley
- USA
| | - Alexis T. Bell
- Department of Chemical and Biomolecular Engineering
- University of California
- Berkeley
- Berkeley
- USA
| | - T. Don Tilley
- Department of Chemistry
- University of California
- Berkeley
- Berkeley
- USA
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21
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Noda Y, Li K, Engler AM, Elliott WA, Rioux RM. Development of a robust sulfur quantification and speciation method for SBA-15-supported sulfonic acid catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00292g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In catalytic applications of surface-modified mesoporous silica materials, distinguishing and quantifying different types of functional groups on the surface is crucial for enabling accurate evaluation of catalytic activity and possible cooperativity among mixed functional groups.
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Affiliation(s)
- Yu Noda
- Department of Chemical Engineering
- The Pennsylvania State University
- University Park
- USA
| | - Kaijin Li
- Department of Chemical Engineering
- The Pennsylvania State University
- University Park
- USA
| | - Alexander M. Engler
- Department of Chemical Engineering
- The Pennsylvania State University
- University Park
- USA
| | - William A. Elliott
- Department of Chemical Engineering
- The Pennsylvania State University
- University Park
- USA
| | - Robert M. Rioux
- Department of Chemical Engineering
- The Pennsylvania State University
- University Park
- USA
- Department of Chemistry
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22
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Eedugurala N, Wang Z, Chaudhary U, Nelson N, Kandel K, Kobayashi T, Slowing II, Pruski M, Sadow AD. Mesoporous Silica-Supported Amidozirconium-Catalyzed Carbonyl Hydroboration. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01671] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naresh Eedugurala
- U.S. Department of Energy
Ames Laboratory and Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Zhuoran Wang
- U.S. Department of Energy
Ames Laboratory and Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Umesh Chaudhary
- U.S. Department of Energy
Ames Laboratory and Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Nicholas Nelson
- U.S. Department of Energy
Ames Laboratory and Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Kapil Kandel
- U.S. Department of Energy
Ames Laboratory and Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Takeshi Kobayashi
- U.S. Department of Energy
Ames Laboratory and Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Igor I. Slowing
- U.S. Department of Energy
Ames Laboratory and Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Marek Pruski
- U.S. Department of Energy
Ames Laboratory and Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
| | - Aaron D. Sadow
- U.S. Department of Energy
Ames Laboratory and Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, Iowa 50011, United States
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23
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Wang QN, Shi L, Lu AH. Highly Selective Copper Catalyst Supported on Mesoporous Carbon for the Dehydrogenation of Ethanol to Acetaldehyde. ChemCatChem 2015. [DOI: 10.1002/cctc.201500501] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Gupta SK, Kuppuswamy S, Walsh JPS, McInnes EJL, Murugavel R. Discrete and polymeric cobalt organophosphates: isolation of a 3-D cobalt phosphate framework exhibiting selective CO2 capture. Dalton Trans 2015; 44:5587-601. [DOI: 10.1039/c4dt03379e] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Auxiliary ligand assisted control over the structural diversity has been achieved in the case of cobalt(ii) organophosphates.
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Affiliation(s)
- Sandeep K. Gupta
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | | | - James P. S. Walsh
- School of Chemistry and Photon Science Institute
- The University of Manchester
- Manchester
- UK
| | - Eric J. L. McInnes
- School of Chemistry and Photon Science Institute
- The University of Manchester
- Manchester
- UK
| | - Ramaswamy Murugavel
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
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25
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Hossain S, Gupta SK, Murugavel R. 2,6-Dimethylphenol derived H-phosphonate and α-hydroxyphosphonate: facile synthesis, crystal chemistry, supramolecular association and metal complexation. CrystEngComm 2015. [DOI: 10.1039/c5ce00675a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A H-phosphonate and an α-hydroxyarylphosphonate with active P–H and P–OH groups have been synthesized from 2,6-dimethylphenol and their aggregation behavior has been investigated.
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Affiliation(s)
- Sazzat Hossain
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076, India
| | - Sandeep K. Gupta
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076, India
| | - Ramaswamy Murugavel
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076, India
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26
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Hill MS, Johnson AL, Manning TD, Molloy KC, Wickham BJ. Single-source AACVD of composite cobalt-silicon oxide thin films. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.07.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Chyba J, Moravec Z, Necas M, Mathur S, Pinkas J. Construction of Larger Molecular Aluminophosphate Cages from the Cyclic Four-Ring Building Unit. Inorg Chem 2014; 53:3753-62. [DOI: 10.1021/ic500083a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jan Chyba
- Department
of Chemistry, Faculty of Science, Masaryk University, Kotlarska
2, CZ-61137 Brno, Czech Republic
- Central
European Institute of Technology (CEITEC), Masaryk University, CZ-62500 Brno, Czech Republic
| | - Zdenek Moravec
- Department
of Chemistry, Faculty of Science, Masaryk University, Kotlarska
2, CZ-61137 Brno, Czech Republic
- Central
European Institute of Technology (CEITEC), Masaryk University, CZ-62500 Brno, Czech Republic
| | - Marek Necas
- Department
of Chemistry, Faculty of Science, Masaryk University, Kotlarska
2, CZ-61137 Brno, Czech Republic
- Central
European Institute of Technology (CEITEC), Masaryk University, CZ-62500 Brno, Czech Republic
| | - Sanjay Mathur
- Institute
of Inorganic Chemistry, University of Cologne, Greinstrasse 6, D-50939, Cologne, Germany
| | - Jiri Pinkas
- Department
of Chemistry, Faculty of Science, Masaryk University, Kotlarska
2, CZ-61137 Brno, Czech Republic
- Central
European Institute of Technology (CEITEC), Masaryk University, CZ-62500 Brno, Czech Republic
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28
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Huerta-Lavorie R, Solis-Ibarra D, Báez-Rodríguez DV, Reyes-Lezama M, de las Nieves Zavala-Segovia M, Jancik V. Heterometallic Alumo- and Gallodisilicates with M(O–Si–O)2M′ and [M(O–Si–O)2]2M′ Cores (M = Al, Ga; M′ = Ti, Zr, Hf). Inorg Chem 2013; 52:6934-43. [DOI: 10.1021/ic400156n] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raúl Huerta-Lavorie
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - Diego Solis-Ibarra
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - Dana Victoria Báez-Rodríguez
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - Marisol Reyes-Lezama
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - M. de las Nieves Zavala-Segovia
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - Vojtech Jancik
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
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29
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Rumberger EMW, Ahn HS, Bell AT, Tilley TD. Water oxidation catalysis via immobilization of the dimanganese complex [Mn2(μ-O)2Cl(μ-O2CCH3)(bpy)2(H2O)](NO3)2 onto silica. Dalton Trans 2013; 42:12238-47. [DOI: 10.1039/c3dt51472b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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30
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Epoxidation catalysts derived from introduction of titanium centers onto the surface of mesoporous aluminophosphate: Comparisons with analogous catalysts based on mesoporous silica. J Catal 2012. [DOI: 10.1016/j.jcat.2011.09.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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31
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Hao P, Yang Z, Ma X, Wang X, Liu Z, Roesky HW, Sun K, Li J, Zhong M. Synthesis and characterization of compounds with the Al–O–X (X = Si, P, C) structural motif. Dalton Trans 2012; 41:13520-4. [DOI: 10.1039/c2dt31872e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Richards AF, Beavers CM. Synthesis and structures of a pentanuclear Al(iii) phosphonate cage, an In(iii) phosphonate polymer, and coordination compounds of the corresponding phosphonate ester with GaI3 and InCl3. Dalton Trans 2012; 41:11305-10. [DOI: 10.1039/c2dt31280h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Yoon CW, Hirsekorn KF, Neidig ML, Yang X, Tilley TD. Mechanism of the Decomposition of Aqueous Hydrogen Peroxide over Heterogeneous TiSBA15 and TS-1 Selective Oxidation Catalysts: Insights from Spectroscopic and Density Functional Theory Studies. ACS Catal 2011. [DOI: 10.1021/cs2003774] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chang Won Yoon
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Kurt F. Hirsekorn
- Core R&D-Chemistry and Catalysis, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Michael L. Neidig
- Core R&D-Chemistry and Catalysis, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Xinzheng Yang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - T. Don Tilley
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
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34
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Choi YS, Moschetta EG, Miller JT, Fasulo M, McMurdo MJ, Rioux RM, Tilley TD. Highly Dispersed Pd-SBA15 Materials from Tris(tert-butoxy)siloxy Complexes of Pd(II). ACS Catal 2011. [DOI: 10.1021/cs2002719] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Eric G. Moschetta
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jeffrey T. Miller
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Meg Fasulo
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Meredith J. McMurdo
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Robert M. Rioux
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - T. Don Tilley
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
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35
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Cordeiro PJ, Tilley TD. Enhancement of epoxidation efficiencies for Ta-SBA15 catalysts. The influence of modification with -EMe3 (E = Si, Ge, Sn) groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6295-6304. [PMID: 21517024 DOI: 10.1021/la200090u] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Site-isolated Ta(V) centers were introduced onto the surface of a mesoporous SBA-15 support via the thermolytic molecular precursor method. After thermal treatment under oxygen, the resulting Si-OH and Ta-OH sites of TaSBA15-O(2)were modified with a series of trimethyl group 14 species, Me(3)E-, by treatment with Me(3)E-NMe(2) (E = Si, Ge, Sn) reagents. The resulting surface-modified catalysts (Me(3)E)(cap)TaSBA15 exhibit a significantly increased rate of cyclohexene epoxidation with H(2)O(2) as an oxidant, and provided a decreased amount of allylic oxidation products with respect to the unmodified material, TaSBA15-O(2). The rate of nonproductive H(2)O(2) decomposition, as monitored via (1)H NMR spectroscopy, significantly decreased after the surface modification. The structure of the TaSBA15 catalysts and potential Ta(V) epoxidation intermediates (formed upon treatment of Ta(V) materials with H(2)O(2)) were probed using UV-visible absorbance and diffuse-reflectance UV-visible spectroscopy. A Ta(V)(η(2)-O(2)) intermediate species is proposed for the TaSBA15-O(2), (Me(3)Si)(cap)TaSBA15, and (Me(3)Ge)(cap)TaSBA15 catalysts, while intermediate species for the (Me(3)Sn)(cap)TaSBA15 catalysts could not be characterized.
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Affiliation(s)
- Paul J Cordeiro
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720, United States
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36
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Cordeiro PJ, Tilley TD. Enhancement of the Catalytic Activity of Titanium-Based Terminal Olefin Epoxidation Catalysts via Surface Modification with Functionalized Protic Molecules. ACS Catal 2011. [DOI: 10.1021/cs200017s] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paul J. Cordeiro
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - T. Don Tilley
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
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37
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Murugavel R, Gogoi N. Rings, chains and cages in metal phosphate chemistry: The interdependence and possible interconversion between various structural forms. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2009.10.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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38
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Edelmann A, Blaurock S, Hrib C, Edelmann FT. Double InMe2 insertion into a 12-membered Si4O6Li2 inorganic ring system coordinated to praseodymium. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2009.11.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Mensinger Z, Gatlin J, Meyers S, Zakharov L, Keszler D, Johnson D. Synthesis of Heterometallic Group 13 Nanoclusters and Inks for Oxide Thin-Film Transistors. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200803514] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Mensinger Z, Gatlin J, Meyers S, Zakharov L, Keszler D, Johnson D. Synthesis of Heterometallic Group 13 Nanoclusters and Inks for Oxide Thin-Film Transistors. Angew Chem Int Ed Engl 2008; 47:9484-6. [DOI: 10.1002/anie.200803514] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Ruddy DA, Tilley TD. Kinetics and Mechanism of Olefin Epoxidation with Aqueous H2O2 and a Highly Selective Surface-Modified TaSBA15 Heterogeneous Catalyst. J Am Chem Soc 2008; 130:11088-96. [DOI: 10.1021/ja8027313] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel A. Ruddy
- Department of Chemistry, University of California, Berkeley, California 94720, and Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720
| | - T. Don Tilley
- Department of Chemistry, University of California, Berkeley, California 94720, and Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720
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Murugavel R, Choudhury A, Walawalkar MG, Pothiraja R, Rao CNR. Metal Complexes of Organophosphate Esters and Open-Framework Metal Phosphates: Synthesis, Structure, Transformations, and Applications. Chem Rev 2008; 108:3549-655. [DOI: 10.1021/cr000119q] [Citation(s) in RCA: 278] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- R. Murugavel
- Department of Chemistry, IIT-Bombay, Powai, Mumbai-400076, India, and Chemistry and Physics of Materials Unit, Jawaharlal Nehru Center of Advanced Scientific Research, Jakkur P.O., Bangalore-560 064, India
| | - Amitava Choudhury
- Department of Chemistry, IIT-Bombay, Powai, Mumbai-400076, India, and Chemistry and Physics of Materials Unit, Jawaharlal Nehru Center of Advanced Scientific Research, Jakkur P.O., Bangalore-560 064, India
| | - M. G. Walawalkar
- Department of Chemistry, IIT-Bombay, Powai, Mumbai-400076, India, and Chemistry and Physics of Materials Unit, Jawaharlal Nehru Center of Advanced Scientific Research, Jakkur P.O., Bangalore-560 064, India
| | - R. Pothiraja
- Department of Chemistry, IIT-Bombay, Powai, Mumbai-400076, India, and Chemistry and Physics of Materials Unit, Jawaharlal Nehru Center of Advanced Scientific Research, Jakkur P.O., Bangalore-560 064, India
| | - C. N. R. Rao
- Department of Chemistry, IIT-Bombay, Powai, Mumbai-400076, India, and Chemistry and Physics of Materials Unit, Jawaharlal Nehru Center of Advanced Scientific Research, Jakkur P.O., Bangalore-560 064, India
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Samanamu CR, Olmstead MM, Montchamp JL, Richards AF. Convenient Synthesis of Aluminum and Gallium Phosphonate Cages. Inorg Chem 2008; 47:3879-87. [DOI: 10.1021/ic800023d] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christian R. Samanamu
- Departments of Chemistry, Texas Christian University, Box 298860, Fort Worth, Texas 76129, and University of California, Davis, One Shields Avenue, Davis, California 95616
| | - Marilyn M. Olmstead
- Departments of Chemistry, Texas Christian University, Box 298860, Fort Worth, Texas 76129, and University of California, Davis, One Shields Avenue, Davis, California 95616
| | - Jean-Luc Montchamp
- Departments of Chemistry, Texas Christian University, Box 298860, Fort Worth, Texas 76129, and University of California, Davis, One Shields Avenue, Davis, California 95616
| | - Anne F. Richards
- Departments of Chemistry, Texas Christian University, Box 298860, Fort Worth, Texas 76129, and University of California, Davis, One Shields Avenue, Davis, California 95616
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44
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Ruddy DA, Brutchey RL, Tilley TD. The Influence of Surface Modification on the Epoxidation Selectivity and Mechanism of TiSBA15 and TaSBA15 Catalysts with Aqueous Hydrogen Peroxide. Top Catal 2008. [DOI: 10.1007/s11244-008-9040-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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45
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Murugavel R, Kuppuswamy S. Water in Organoaluminum Chemistry! Three-in-One Aluminophosphate Clusters That Incorporate Boehmite Repeating Units. Chemistry 2008; 14:3869-73. [DOI: 10.1002/chem.200800320] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Yang S, Li G, Blake AJ, Sun J, Xiong M, Liao F, Lin J. Oxyfluorotitanophosphate cluster [Ti10P4O16F44]16-: synthesis and characterization of K16[Ti10P4O16F44]. Inorg Chem 2008; 47:1414-6. [PMID: 18237115 DOI: 10.1021/ic702214g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
One oxyfluorotitanophosphate cluster compound, K16[Ti10P4O16F44], has been synthesized and structurally characterized. As far as we know, it is the first cluster compound for titanophosphate.
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Affiliation(s)
- Sihai Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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47
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Davies RP, Giménez MA, Patel L, White AJP. Aluminium complexes with thio-phosphorus ligands: syntheses and characterisations of [Al2(CyPS3)2(CyPHS2)2] and [Al(S2PPh2)3]. Dalton Trans 2008:5705-7. [DOI: 10.1039/b813427h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Giessmann S, Blaurock S, Lorenz V, Edelmann FT. Unusual Inorganic Ring Systems of Scandium and Yttrium Containing Group 13 Metals: Coordination of Monomeric Me2InOMe to Yttrium. Inorg Chem 2007; 46:10956-8. [DOI: 10.1021/ic701909m] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stephan Giessmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Steffen Blaurock
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Frank T. Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
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49
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Veith M, Rammo A, Huch V, Biegler J. Zum Reaktionsverhalten des polycyclischen Oligoalumosiloxans [Ph2SiO]8[AlO(OH)]4 gegenüber Hexamethyldisilazan. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200600288] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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50
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Gauvin RM, Delevoye L, Hassan RA, Keldenich J, Mortreux A. Well-Defined Silica-Supported Rare-Earth Silylamides. Inorg Chem 2007; 46:1062-70. [PMID: 17249652 DOI: 10.1021/ic0610334] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rare-earth silylamides [Ln{N(SiMe3)2}3] [1a-d, Ln = Y (1a), La (1b), Nd (1c), Sm (1d)] react with partially dehydroxylated silica to generate the singly surface-bonded species [(Si-O)Ln{N(SiMe3)2}2] (2a-d). Trimethylsilylation of silanols occurs during the grafting process, affording in fine a hydroxyl-free surface. Contacting these well-defined surface species with excess triphenylphosphine oxide yields [(Si-O)Ln{N(SiMe3)2}2(OPPh3)] surface adducts 3a-d as the major (80%) species, leaving about 20% of unreacted siloxide bisamido species (20%). In addition to elemental analysis and infrared spectroscopy, solid-state NMR spectroscopy was used to characterize these new materials and proved to be a particularly efficient tool for the study of the paramagnetic Nd- and Sm-containing materials and for providing unambiguous verification of OPPh3 coordination on the rare-earth center. Silica-supported rare-earth amides 2a-d are active catalysts for 1-hexene and styrene hydrosilylation and for phenylacetylene dimerization. When compared to the molecular species 1a-d, grafting of the catalyst induces significant changes in the activity and selectivity of these systems.
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Affiliation(s)
- Régis M Gauvin
- Unité de Catalyse et de Chimie du Solide UMR 8181 CNRS, ENSCL, BP 90108, 59652 Villeneuve d'Ascq Cedex, France.
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