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Efficient Epoxidation of Olefins by Silica Supported Dioxidomolybdenum(VI) Coordination Compounds. Catal Letters 2023. [DOI: 10.1007/s10562-023-04300-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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2
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Monika, Ansari A. Effect of the ring size of TMC ligands in controlling C-H bond activation by metal-superoxo species. Dalton Trans 2022; 51:5878-5889. [PMID: 35347335 DOI: 10.1039/d2dt00491g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Metal-superoxo species play a very important role in many metal-mediated catalytic transformation reactions. Their catalytic reactivity is affected by many factors such as the nature of metal ions and ring size of ligands. Herein, for the first time, we report DFT calculations on the electronic structures of a series of metal-superoxo species (M = V, Cr, Mn, Fe, and Co) with two ring size ligands, i.e., 13-TMC/14-TMC, and a detailed mechanistic study on the C-H bond activation of cyclohexa-1,4-diene followed by the effect of the ring size of ligands. Our DFT results showed that the electron density at the distal oxygen plays an important role in C-H bond activation. By computing the energetics of C-H bond activation and mapping the potential energy surface, it was found that the initial hydrogen abstraction is the rate-determining step with both TMC rings and all the studied metal-superoxo species. The significant electron density at the cyclohex-1,4-diene carbon indicates that the reaction proceeds via the proton-coupled electron transfer mechanism. By mapping the potential energy surfaces, we found that the 13-TMC ligated superoxo with the anti-isomer are more reactive than the 14-TMC superoxo species except for the iron-superoxo species where the 14-TMC ligated superoxo species is more reactive i.e. smaller ring size TMC is more reactive towards C-H bond activation. This is also supported by the structural correlation, i.e., the greater contraction in the smaller ring results in the metal being pushed out of plane along the z-axis, which reduces the steric hindrance. Thus, the ring size can help in designing catalysts with better efficiency for catalytic reactions.
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Affiliation(s)
- Monika
- Department of Chemistry, Central University of Haryana, India, 123031.
| | - Azaj Ansari
- Department of Chemistry, Central University of Haryana, India, 123031.
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3
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Heydari N, Bikas R, Shaterian M, Lis T. Green solvent free epoxidation of olefins by a heterogenised hydrazone-dioxidotungsten(vi) coordination compound. RSC Adv 2022; 12:4813-4827. [PMID: 35425511 PMCID: PMC8981271 DOI: 10.1039/d1ra09217k] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 01/27/2022] [Indexed: 12/19/2022] Open
Abstract
A new mononuclear tungsten coordination compound, [WO2L(CH3OH)] (1), was synthesized by the reaction of WCl6 and H2L (H2L = (E)-4-amino-N′-(5-bromo-2-hydroxybenzylidene)benzohydrazide) in methanol. Both the H2L and compound 1 were characterized by elemental analysis and UV-Vis, FT-IR and NMR spectroscopic methods. The molecular structure of compound 1 was also determined by single crystal X-ray analysis which confirmed the compound is a mononuclear coordination compound of cis-dioxidotungsten(vi) containing a free amine functionality on the ligand. Compound 1 was supported on propionyl chloride-functionalized silica gel by amidification reaction to obtain a heterogeneous catalyst. The obtained heterogeneous catalyst was characterized by FT-IR spectroscopy, thermal gravimetric analysis (TGA), diffuse-reflectance spectroscopy (DRS), X-ray diffraction analysis (XRD), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) and its catalytic activity was investigated in the epoxidation of olefins with hydrogen peroxide under solvent free conditions. The catalyst was successfully recovered several times and the recovered catalyst was also characterized by various methods including FT-IR, DRS, TGA, SEM and EDX analyses. The results indicated this heterogeneous catalytic system is an effective and selective catalyst for epoxidation of olefins and can be reused several times without significant change in its catalytic activity. In this study the solvent free catalytic oxidation of olefins by a new silica supported hydrazone-dioxidotungsten(vi) coordination compound is investigated.![]()
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Affiliation(s)
- Neda Heydari
- Department of Chemistry, Faculty of Science, University of Zanjan, 45371-38791, Zanjan, Iran
| | - Rahman Bikas
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, 34148-96818, Qazvin, Iran
| | - Maryam Shaterian
- Department of Chemistry, Faculty of Science, University of Zanjan, 45371-38791, Zanjan, Iran
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, Wroclaw 50-383, Poland
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Nayak P, Nayak M, Meena K, Kar S. Oxo(corrolato)vanadium( iv) catalyzed epoxidation: oxo(peroxo)(corrolato)vanadium( v) is the true catalytic species. NEW J CHEM 2022. [DOI: 10.1039/d1nj06015e] [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
Oxo(corrolato)vanadium(iv) complexes are highly efficient oxidizers in the presence of H2O2 and KHCO3, and oxo(peroxo)(corrolato)vanadium(v) complexes are the catalytic intermediate.
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Affiliation(s)
- Panisha Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar – 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
| | - Manisha Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar – 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
| | - Kiran Meena
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar – 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
| | - Sanjib Kar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar – 752050, India
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
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5
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Liu X, Huang J, Tao L, Yu H, Zhou X, Xue C, Han Q, Zou W, Ji H. Oxygen Atom Transfer Mechanism for
Vanadium‐Oxo
Porphyrin Complexes Mediated Aerobic Olefin Epoxidation. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiao‐Hui Liu
- Fine Chemical Industry Research Institute, School of Chemical Engineering and Technology, Sun Yat‐sen University Zhuhai Guangdong 519082 China
| | - Jia‐Ying Huang
- Fine Chemical Industry Research Institute, School of Chemical Engineering and Technology, Sun Yat‐sen University Zhuhai Guangdong 519082 China
| | - Lei‐Ming Tao
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat‐sen University Guangzhou Guangdong 510275 China
| | - Hai‐Yang Yu
- Fine Chemical Industry Research Institute, School of Chemical Engineering and Technology, Sun Yat‐sen University Zhuhai Guangdong 519082 China
| | - Xian‐Tai Zhou
- Fine Chemical Industry Research Institute, School of Chemical Engineering and Technology, Sun Yat‐sen University Zhuhai Guangdong 519082 China
| | - Can Xue
- Fine Chemical Industry Research Institute, School of Chemical Engineering and Technology, Sun Yat‐sen University Zhuhai Guangdong 519082 China
| | - Qi Han
- Fine Chemical Industry Research Institute, School of Chemical Engineering and Technology, Sun Yat‐sen University Zhuhai Guangdong 519082 China
| | - Wen Zou
- Fine Chemical Industry Research Institute, School of Chemical Engineering and Technology, Sun Yat‐sen University Zhuhai Guangdong 519082 China
| | - Hong‐Bing Ji
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat‐sen University Guangzhou Guangdong 510275 China
- School of Chemical Engineering Guangdong University of Petrochemical Technology Maoming Guangdong 525000 China
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6
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Maurya MR, Prakash V, Avecilla F, Sankar M. Selective Bromination of
β
‐Positions of Porphyrin by Self‐Catalytic Behaviour of VOTPP: Facile Synthesis, Electrochemical Redox Properties and Catalytic Application. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100116] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mannar R. Maurya
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
| | - Ved Prakash
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
| | - Fernando Avecilla
- Grupo Xenomar, Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Química, Facultade de Ciencias Universidade da Coruña Campus de A Coruña 15071 A Coruña Spain
| | - Muniappan Sankar
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
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7
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Wang Q, Xiong ZD, Liu L, Cai YJ. Syntheses, X-ray crystal structures and catalytic epoxidation of oxidovanadium(V) and dioxidomolybdenum(VI) complexes derived from N′-(4-Bromo-2-hydroxybenzylidene)benzohydrazide. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2020.1749658] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Qian Wang
- Institute of Technology, Wuhan Textile University, Wuhan, People’s Republic of China
| | - Zhong-Duo Xiong
- Institute of Technology, Wuhan Textile University, Wuhan, People’s Republic of China
| | - Liu Liu
- Institute of Technology, Wuhan Textile University, Wuhan, People’s Republic of China
| | - Ya-Jun Cai
- Institute of Technology, Wuhan Textile University, Wuhan, People’s Republic of China
- School of Environmental Engineering, Wuhan Textile University, Wuhan, People’s Republic of China
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Androš Dubraja L, Žilić D, Olujić K, Pavić L, Molčanov K, Pajić D. Targeted synthesis of a Cr III–O–V V core oxo-bridged complex: spectroscopic, magnetic and electrical properties. NEW J CHEM 2021. [DOI: 10.1039/d1nj00430a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The results of vibrational, electronic, structural, thermal, magnetic and impedance spectroscopy studies are presented in the first reported compound with a CrIII–O–VV bridge.
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Affiliation(s)
| | - Dijana Žilić
- Ruđer Bošković Institute
- Bijenička Cesta 54
- 10000 Zagreb
- Croatia
| | - Kristina Olujić
- Ruđer Bošković Institute
- Bijenička Cesta 54
- 10000 Zagreb
- Croatia
| | - Luka Pavić
- Ruđer Bošković Institute
- Bijenička Cesta 54
- 10000 Zagreb
- Croatia
| | | | - Damir Pajić
- Department of Physics
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
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9
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Mubarak MQE, Gérard EF, Blanford CF, Hay S, de Visser SP. How Do Vanadium Chloroperoxidases Generate Hypochlorite from Hydrogen Peroxide and Chloride? A Computational Study. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03490] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- M. Qadri E. Mubarak
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
- Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Emilie F. Gérard
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
- Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Christopher F. Blanford
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
- Department of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Sam Hay
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Sam P. de Visser
- Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
- Department of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
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10
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Competitive behavior of nitrogen based axial ligands in the oxovanadium(IV)-salen catalyzed sulfoxidation of phenylmercaptoacetic acid. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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