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Li AJ, Huang SL, Yang GY. Anderson-type polyoxometalates for catalytic applications. Dalton Trans 2023. [PMID: 37997776 DOI: 10.1039/d3dt03274d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Anderson-type polyoxometalates have exhibited remarkable catalytic capabilities in a wide range of reactions. This discourse delves into the distinct categories of Anderson POMs and their respective catalytic reactions, which are examined in separate segments. These encompass the straightforward {XMo6} POMs, the organic grafting {XMo6} POMs, and the integration of POMs into POM cluster organic frameworks. It is important to highlight that specific catalytic functionalities can solely be accomplished via the utilization of Anderson-type POMs, thus emphasizing their indispensable role in future explorations.
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Affiliation(s)
- Ai-Juan Li
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
| | - Sheng-Li Huang
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
| | - Guo-Yu Yang
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
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Almi M, Zhou M, Saal A, Springborg M. Mechanistic insights into aerobic oxidative cleavage of glycol catalyzed by an Anderson-type polyoxometalate [IMo 6O 24] 5. J Mol Model 2023; 29:57. [PMID: 36710274 DOI: 10.1007/s00894-023-05458-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/17/2023] [Indexed: 01/31/2023]
Abstract
A computational investigation of the aerobic oxidative C-C bond cleavage reaction of glycol catalyzed by an Anderson-type heteropolyanion HPA [IMo6O24]5- in the presence of acetonitrile as solvent has been performed at the WB97XD/6-31G(d,p)/lanl2dz level. Two reaction pathways have been identified. The catalytic cycle of each pathway consists of three steps: oxidation cleavage of a glycol molecule by the HPA, oxidation of the HPA by one dioxygen molecule, and, finally, oxidation of a second glycol and regeneration of the catalyst. These reaction pathways have been thoroughly investigated in terms of energetic, natural bond orbital (NBO), natural charges, and geometrical parameters. It is found that (i) even though the top oxygen atoms of the Anderson heteropolyanion are not the most negatively charged ones, they are more likely to react with the diol hydroxyl groups, (ii) a direct relationship between the presence of the iodine ion I(VII) and the studied oxidation reaction could not be identified, and (iii) in terms of energy, the transfer of the two hydrogen atoms is the most energetic step.
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Affiliation(s)
- Meriem Almi
- Laboratoire de Chimie Théorique Computationnelle Et Photonique, Faculté de Chimie, Université Des Sciences Et de La Technologie Houari-Boumédiène (USTHB), El Alia, BP32, 16111, Algiers, Algeria.
| | - Meijuan Zhou
- SDU-ANU Joint Science College, Shandong University, Weihai, 264209, People's Republic of China.
| | - Amar Saal
- Laboratoire de Chimie Théorique Computationnelle Et Photonique, Faculté de Chimie, Université Des Sciences Et de La Technologie Houari-Boumédiène (USTHB), El Alia, BP32, 16111, Algiers, Algeria.,LCAGC Laboratory, Université Mouloud Mammeri Tizi Ouzou, UMMTO, 15000, Tizi-Ouzou, Algeria
| | - Michael Springborg
- Laboratory of Theoretical Chemistry, Department of Chemistry, University of Namur, Rue de Bruxelles 61, 5000, Namur, Belgium.,Institute of Structured Matter (NISM), University of Namur, Rue de Bruxelles 61, 5000, Namur, Belgium
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Wang Y, Duan F, Liu X, Li B. Cations Modulated Assembly of Triol-Ligand Modified Cu-Centered Anderson-Evans Polyanions. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27092933. [PMID: 35566286 PMCID: PMC9101508 DOI: 10.3390/molecules27092933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 04/29/2022] [Accepted: 05/03/2022] [Indexed: 11/18/2022]
Abstract
Counter-cations are essential components of polyoxometalates (POMs), which have a distinct influence on the solubility, stabilization, self-assembly, and functionality of POMs. To investigate the roles of cations in the packing of POMs, as a systematic investigation, herein, a series of triol-ligand covalently modified Cu-centered Anderson-Evans POMs with different counter ions were prepared in an aqueous solution and characterized by various techniques including single-crystal X-ray diffraction. Using the strategy of controlling Mo sources, in the presence of triol ligand, NH4+, Cu2+ and Na+ were introduced successfully into POMs. When (NH4)6Mo7O24 was selected, the counter cations of the produced POMs were ammonium ions, which resulted in the existence of clusters in the discrete state. Additionally, with the modulation of the pH of the solutions, the modified sites of triol ligands on the cluster can be controlled to form δ- or χ-isomers. By applying MoO3 in the same reaction, Cu2+ ions served as linkers to connect triol-ligand modified polyanions into chains. When Na4Mo8O26 was employed as the Mo source to react with triol ligands in the presence of CuCl2, two 2-D networks were obtained with {Na4(H2O)14} or {{Na2(H2O)4} sub-clusters as linkers, where the building blocks were δ/δ- and χ/χ-isomers, respectively. The present investigation reveals that the charges, sizes and coordination manners of the counter cations have an obvious influence on the assembled structure of polyanions.
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Chen X, Wei M, Yang A, Jiang F, Li B, Kholdeeva OA, Wu L. Near-Infrared Photothermal Catalysis for Enhanced Conversion of Carbon Dioxide under Mild Conditions. ACS APPLIED MATERIALS & INTERFACES 2022; 14:5194-5202. [PMID: 35067040 DOI: 10.1021/acsami.1c18889] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Enhanced conversion of carbon dioxide (CO2) for cycloaddition with epoxide derivatives is highly desired in organic synthesis and green chemistry, yet it is still a challenge to obtain satisfactory activity under mild reaction conditions of temperature and pressure. For this purpose, an unexploited strategy is proposed here by incorporating near-infrared (NIR) photothermal properties into multicomponent catalysts. Through the electrostatic adsorption of Co- or Ce-substituted polyoxometalate (POM) clusters on the surface of graphene oxide (GO) with covalently grafted polyethyleneimine (PEI), a series of composite catalysts POMs@GO-PEI are prepared. The structural and property characterizations demonstrate the synergistic advantages of the catalysts bearing Lewis acids and bases and local NIR photothermal heating from the GO matrix for dramatically enhanced CO2 cycloaddition. Noticeably, while the turnover frequency increases up to 2718 h-1, the heterogeneous catalysts exhibit photothermal stability and recyclability. With this method, the onsite NIR photothermal transformation becomes extendable to more green reaction processes.
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Affiliation(s)
- Xiaofei Chen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Mingfeng Wei
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Aibing Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Fengrui Jiang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Oxana A Kholdeeva
- Boreskov Institute of Catalysis, 5, avenue Academy Lavrentiev, Novosibirsk 630090, Russia
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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Deng Y, Zeng X, Xu H, Liu J, Zhang J, Hu D, Xie J. Highly efficient synthesis of diselenides and ditellurides catalyzed by polyoxomolybdate-based copper. NEW J CHEM 2022. [DOI: 10.1039/d2nj04560e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A polyoxomolybdate-based copper-catalyzed synthesis of diselenides and ditellurides from organic iodides and elemental selenium or tellurium in moderate to excellent yields is developed.
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Affiliation(s)
- Yuanyuan Deng
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P. R. China
| | - Xianghua Zeng
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P. R. China
| | - Hao Xu
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P. R. China
| | - Jiawei Liu
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P. R. China
| | - Junyong Zhang
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P. R. China
| | - Dongcheng Hu
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Jingli Xie
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P. R. China
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Xu X, Zhang Y, Ying J, Jin L, Tian A, Wang X. POM-based compounds modified by mono- and bis-triazole derivatives: photocatalytic, electrochemical, and supercapacitor properties. CrystEngComm 2022. [DOI: 10.1039/d1ce01596f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Using triazole derivatives 5 POM-based compounds with electrocatalytic and capacitive properties were obtained under hydrothermal conditions. The compounds have good photocatalytic activity for the degradation of organic dyes and the reduction of Cr(vi).
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Affiliation(s)
- Xi Xu
- Department of Chemistry, Bohai University, Jinzhou, 121013, P. R. China
| | - Yanping Zhang
- Department of Chemistry, Bohai University, Jinzhou, 121013, P. R. China
| | - Jun Ying
- Department of Chemistry, Bohai University, Jinzhou, 121013, P. R. China
| | - Liang Jin
- Department of Chemistry, Bohai University, Jinzhou, 121013, P. R. China
| | - Aixiang Tian
- Department of Chemistry, Bohai University, Jinzhou, 121013, P. R. China
| | - Xiuli Wang
- Department of Chemistry, Bohai University, Jinzhou, 121013, P. R. China
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