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Ahmad W, Ahmad N, Wang K, Aftab S, Hou Y, Wan Z, Yan B, Pan Z, Gao H, Peung C, Junke Y, Liang C, Lu Z, Yan W, Ling M. Electron-Sponge Nature of Polyoxometalates for Next-Generation Electrocatalytic Water Splitting and Nonvolatile Neuromorphic Devices. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304120. [PMID: 38030565 PMCID: PMC10837383 DOI: 10.1002/advs.202304120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 09/23/2023] [Indexed: 12/01/2023]
Abstract
Designing next-generation molecular devices typically necessitates plentiful oxygen-bearing sites to facilitate multiple-electron transfers. However, the theoretical limits of existing materials for energy conversion and information storage devices make it inevitable to hunt for new competitors. Polyoxometalates (POMs), a unique class of metal-oxide clusters, have been investigated exponentially due to their structural diversity and tunable redox properties. POMs behave as electron-sponges owing to their intrinsic ability of reversible uptake-release of multiple electrons. In this review, numerous POM-frameworks together with desired features of a contender material and inherited properties of POMs are systematically discussed to demonstrate how and why the electron-sponge-like nature of POMs is beneficial to design next-generation water oxidation/reduction electrocatalysts, and neuromorphic nonvolatile resistance-switching random-access memory devices. The aim is to converge the attention of scientists who are working separately on electrocatalysts and memory devices, on a point that, although the application types are different, they all hunt for a material that could exhibit electron-sponge-like feature to realize boosted performances and thus, encouraging the scientists of two completely different fields to explore POMs as imperious contenders to design next-generation nanodevices. Finally, challenges and promising prospects in this research field are also highlighted.
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Affiliation(s)
- Waqar Ahmad
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Nisar Ahmad
- School of MicroelectronicsUniversity of Science and Technology of ChinaHefei230026China
| | - Kun Wang
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Sumaira Aftab
- CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei230027China
| | - Yunpeng Hou
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Zhengwei Wan
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Bei‐Bei Yan
- CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei230027China
| | - Zhao Pan
- CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei230027China
| | - Huai‐Ling Gao
- CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei230027China
| | - Chen Peung
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
| | - Yang Junke
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
| | - Chengdu Liang
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Zhihui Lu
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Wenjun Yan
- School of AutomationHangzhou Dianzi UniversityHangzhou310018China
| | - Min Ling
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
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2
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Thompson JA, Vilà-Nadal L. Computation of 31P NMR chemical shifts in Keggin-based lacunary polyoxotungstates. Dalton Trans 2024; 53:564-571. [PMID: 38054391 DOI: 10.1039/d3dt02694a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Density Functional Theory (DFT) calculations were employed to systematically study the accuracy of various exchange-correlation functionals in reproducing experimental 31P NMR chemical shifts, δExp(31P) for Keggin, [PW12O40]3- and corresponding lacunary clusters: [PW11O39]7-, [A-PW9O34]9-, and [B-PW9O34]9-. Initially, computed chemical shifts, δCalc(31P) were obtained with without neutralising their charge in which associated error, δError(31P), decreased as a function of Hartree-Fock (HF) exchange, attributed to constriction of the P-O tetrahedron. By comparison, δCalc(31P) performed with explicitly located counterions to render the system charge neutral, reduced discrepancies, δError(31P) by 1-2 ppm. However, uncertainties in δCalc(31P) remain, particularly for [B-PW9O34]9- anions attributed to direct electrostatic interactions between the counterions and the central tetrahedron. Optimal results were achieved using the PBE/TZP//PBE0/TZP method, achieving a mean absolute error (MAE) and a mean squared error (MSE) of 4.03 ppm. Our results emphasize that understanding the nature of the electrolyte and solvent environment is essential to obtaining reasonable agreement between theoretical and experimental results.
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3
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Yang M, Zhang Y, Ji S, Li H, Ma X, Jin Y, Ma P, Wang J, Niu J. A heteropolytungstate based 2D layered porous framework with high proton conductivity. Chem Commun (Camb) 2023; 59:13627-13630. [PMID: 37902595 DOI: 10.1039/d3cc04517j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
A heteropolytungstate cluster [{Ru2O(bpy)2}2{Bi2W32O110}]10- (bpy = C10H8N2) was incorporated into a 2 : 1 type layered porous framework by interweaving the Na+ bridged cluster chains through the hydrogen bonding ability of the bpy ligands. It features multiple pore channels rich in hydrogen-bond network, contributing high conductivities > 10-2 S cm-1 at 298-358 K and 85% RH.
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Affiliation(s)
- Mengnan Yang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Yao Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Shiyan Ji
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Huafeng Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Xinyi Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Yuzhen Jin
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
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4
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Liu S, He Y, Ma X, Liu J, Ma P, Wang J, Niu J. Synthesis and Structure of High-Nuclearity Carboxylate-Modified Heteropolyoxovanadate Serving as a Heterogeneous Catalyst for Selective Oxidation of Alkylbenzenes. Inorg Chem 2023; 62:18384-18390. [PMID: 37906517 DOI: 10.1021/acs.inorgchem.3c01802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
A high-nuclearity carboxylic-modified heteropolyoxovanadate, Na2K10H15[P8VIV24(tart)15(H2O)15(OH)O51]·58H2O [1, tart = C4H2O6], has been successfully synthesized by a conventional aqueous method under mild conditions. The crystallographic study reveals that compound 1 crystallizes in the tetragonal I41/a space group and is composed by a trilayer saddle-like polyoxoanion {P8V24}. Two {V3(tart)(H2O)O11} as linking units bridge the top {P4VIV9(tart)7(H2O)4(OH)O23} and the bottom {P4VIV9(tart)6(H2O)9O22} layers via tartrate ligands and {PO4} tetrahedra, resulting in a 24-nuclearity POV skeleton structure. More interestingly, compound 1 serves as a heterogeneous catalyst for the selective oxidation of diphenylmethanes with 96.2% conversion and 93.6% selectivity under the optimized conditions.
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Affiliation(s)
- Siyu Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Yuzan He
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Xinyi Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Jiayu Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, Henan, P. R. China
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5
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Petrus E, Garay-Ruiz D, Reiher M, Bo C. Multi-Time-Scale Simulation of Complex Reactive Mixtures: How Do Polyoxometalates Form? J Am Chem Soc 2023; 145:18920-18930. [PMID: 37496164 DOI: 10.1021/jacs.3c05514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Understanding the dynamics of reactive mixtures still challenges both experiments and theory. A relevant example can be found in the chemistry of molecular metal-oxide nanoclusters, also known as polyoxometalates. The high number of species potentially involved, the interconnectivity of the reaction network, and the precise control of the pH and concentrations needed in the synthesis of such species make the theoretical/computational treatment of such processes cumbersome. This work addresses this issue relying on a unique combination of recently developed computational methods that tackle the construction, kinetic simulation, and analysis of complex chemical reaction networks. By using the Bell-Evans-Polanyi approximation for estimating activation energies, and an accurate and robust linear scaling for correcting the computed pKa values, we report herein multi-time-scale kinetic simulations for the self-assembly processes of polyoxotungstates that comprise 22 orders of magnitude, from tens of femtoseconds to months of reaction time. This very large time span was required to reproduce very fast processes such as the acid/base equilibria (at 10-12 s), relatively slow reactions such as the formation of key clusters such as the metatungstate (at 103 s), and the very slow assembly of the decatungstate (at 106 s). Analysis of the kinetic data and of the reaction network topology shed light onto the details of the main reaction mechanisms, which explains the origin of kinetic and thermodynamic control followed by the reaction. Simulations at alkaline pH fully reproduce experimental evidence since clusters do not form under those conditions.
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Affiliation(s)
- Enric Petrus
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avenida Països Catalans, 16, Tarragona 43007, Spain
| | - Diego Garay-Ruiz
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avenida Països Catalans, 16, Tarragona 43007, Spain
| | - Markus Reiher
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, Zürich 8093, Switzerland
| | - Carles Bo
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avenida Països Catalans, 16, Tarragona 43007, Spain
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel•li Domingo s/n, Tarragona 43007, Spain
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6
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Thompson JA, González-Cabaleiro R, Vilà-Nadal L. Reducing Systematic Uncertainty in Computed Redox Potentials for Aqueous Transition-Metal-Substituted Polyoxotungstates. Inorg Chem 2023; 62:12260-12271. [PMID: 37489885 PMCID: PMC10410613 DOI: 10.1021/acs.inorgchem.3c01115] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Indexed: 07/26/2023]
Abstract
Polyoxometalates have attracted significant interest owing to their structural diversity, redox stability, and functionality at the nanoscale. In this work, density functional theory calculations have been employed to systematically study the accuracy of various exchange-correlation functionals in reproducing experimental redox potentials, U0Red in [PW11M(H2O)O39]q- M = Mn(III/II), Fe(III/II), Co(III/II), and Ru(III/II). U0Red calculations for [PW11M(H2O)O39]q- were calculated using a conductor-like screening model to neutralize the charge in the cluster. We explicitly located K+ counterions which induced positive shifting of potentials by > 500 mV. This approximation improved the reproduction of redox potentials for Kx[XW11M(H2O)O39]q-x M = Mn(III/II)/Co(III/II). However, uncertainties in U0Red for Kx[PW11M(H2O)O39]q-x M = Fe(III/II)/Ru(III/II) were observed because of the over-stabilization of the ion-pairs. Hybrid functionals exceeding 25% Hartree-Fock exchange are not recommended because of large uncertainties in ΔU0Red attributed to exaggerated proximity of the ion-pairs. Our results emphasize that understanding the nature of the electrode and electrolyte environment is essential to obtain a reasonable agreement between theoretical and experimental results.
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Affiliation(s)
- Jake A. Thompson
- School
of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K.
| | | | - Laia Vilà-Nadal
- School
of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K.
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7
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Anticancer, antimicrobial and biomedical features of polyoxometalate as advanced materials: A review study. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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Mishra N, Bansal D, Supriya S. Polyoxometalate-Supported Copper(I)-Pyrazole Complex: Unusual Stability, Geometrical Isomers, Organic Transformation, and Computation. ACS OMEGA 2022; 7:31403-31412. [PMID: 36092552 PMCID: PMC9454276 DOI: 10.1021/acsomega.2c03795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
We have described the synthesis and characterization of a polyoxometalate (POM)-supported copper(I)-pyrazole complex, [CuI(C15H12N2)2] [PW12O40{CuI(C15H12N2)2}2]·CH3OH (1). There are three Cu(I)-pyrazole coordination complexes in compound 1, out of which two are supported by the {PW12O40}3- Keggin POM by coordinate covalent bonds from the POM surface through oxygen donors to the Cu(I) centers of two Cu(I) complexes and one remains uncoordinated to the POM surface, acting as a cationic complex species in the crystals of 1. The POM-coordinated Cu(I) complexes have a T-shaped geometry, and the uncoordinated Cu(I) complex is a linear one. During the solvothermal synthesis of compound 1, remarkably, the associated 1,5-diphenylpyrazole ligand is formed from cinnamaldehyde phenylhydrazone through oxidative cyclization at the cost of Cu(II) reduction to Cu(I), and then, these two (copper(I) and pyrazole ligand) form the coordination complex. Compound 1 undergoes desolvation on heating the single crystals of compound 1 at 55 °C in the aerial atmosphere with the formation of the desolvated compound [CuI(C15H12N2)2][PW12O40{CuI(C15H12N2)2}2] (2). Interestingly, when an aqueous suspension of compound 1 is bubbled with O2 gas at room temperature, it undergoes solid-to-solid transformation, resulting in the formation of the compound [CuI(C15H12N2)2]3[PW12O40] (3). Compounds 1, 2, and 3 have been characterized by routine spectral analyses (including cyclic voltammetry and X-ray photoelectron spectroscopy (XPS) studies) and unambiguously by single-crystal X-ray crystallography. We have performed density functional theory (DFT) calculations on compound 1 to understand the rationale of its unusual stability toward oxidation.
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Affiliation(s)
- Neeraj
Kumar Mishra
- School
of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Deepak Bansal
- Materials
Research and Technology, Luxembourg Institute
of Science and Technology, 4362 Esch-sur-Alzette, Luxembourg
| | - Sabbani Supriya
- School
of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
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Saad RA, Younes G, El-Dakdouki MH, Al-Oweini R. Vanadium-Substituted Polyoxomolybdates for Methylene Blue Adsorption from Aqueous Solutions. J CLUST SCI 2022. [DOI: 10.1007/s10876-021-02130-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Zhao Y, Wan R, Li H, Zhao R, Chen W, Song H, Ma P, Niu J, Wang J. 183W Nuclear Magnetic Resonance and Photocatalysis Studies of Two Ruthenium-Decorated Isopolyoxometalates {Ru 2W 10} and {Ru 2W 13} via pH-Induced Assemblies. Inorg Chem 2022; 61:12097-12105. [DOI: 10.1021/acs.inorgchem.2c00664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yujie Zhao
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Rong Wan
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Huafeng Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Ruikun Zhao
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Wenjing Chen
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Haoming Song
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, P. R. China
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11
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Synthesis, structure and properties of three novel transition-metal-containing tantalum-phosphate clusters. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.12.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Chen X, Wang P, Wang T, Xu L. Improved Photocatalytic Performance of the First Polyoxometalate Electron Acceptor-Modified Cu2ZnSnS4 Photocatalyst for Cr(VI) Reduction. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421120050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Chen W, Tan CH, Wang H, Ye X. Molybdenum/Tungsten-Based Heteropoly Salts in Oxidations. Chem Asian J 2021; 16:2753-2772. [PMID: 34286908 DOI: 10.1002/asia.202100686] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/13/2021] [Indexed: 11/12/2022]
Abstract
Oxidation represents one of the most important and practical chemical transformations for both organic synthesis, material science and pharmaceutical area. Among the existing strategies, molybdenum/tungsten-based heteropoly salts involved oxidations with low-cost and environmentally benign terminal oxidant and thus have attracted considerable attention in recent years. In this review, we have summarized the recent development of heteropoly salts utilized in oxidations, mainly the peroxomolybdates and peroxotungstates. We wish to highlight the progress made in the past 20 years of this field. Three categories are classified according to the aggregation state of metal oxides. Special attention is paid to the catalytically active peroxometalate species generated during the oxidation process. It is helpful to shed light on the common features that enable highly efficient and selective oxidations. We aim to inspire fellow chemists to explore more functional metalates for catalytic oxidations, especially asymmetric versions. Meanwhile, we attempt to understand the design principles for the discovery of more efficient, selective and economical catalytic systems.
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Affiliation(s)
- Wenchao Chen
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, 310014, P. R. China
| | - Choon-Hong Tan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Hong Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, 310014, P. R. China.,Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou, 310014, P. R. China
| | - Xinyi Ye
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, 310014, P. R. China
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14
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Wan R, Liu Z, Ma X, Li H, Ma P, Zhang C, Niu J, Wang J. Discovery of two Na +-centered Silverton-type polyoxometalates {NaM 12O 42} (M = Mo, W). Chem Commun (Camb) 2021; 57:2172-2175. [PMID: 33524095 DOI: 10.1039/d0cc07590f] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new members of highly charged Silverton archetype [NaM12O42]11- were demonstrated in the 3D POM-based frameworks Na3[NaM12O42(Ru(DMSO)3)4]·13H2O (M = Mo (1), W (2)), where the unusual icosahedron coordination of a Na+ ion incubated as a heteroatom is reported for the first time in topical POMs. Furthermore, 23Na NMR was applied to certify the interpretation of X-ray diffraction data concerning Na localization. Additionally, the porous nature of the frameworks 1 and 2 has also been investigated.
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Affiliation(s)
- Rong Wan
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Zhen Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Xinyi Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Huafeng Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Chao Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
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15
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Niu JQ, Zhao Q, Xin X, Zhang YQ, Hu N, Ma YY, Han ZG. Krebs-type polyoxometalate-based crystalline materials: synthesis, characterization and catalytic performance. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1802650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Jia-Qi Niu
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei, P. R. China
| | - Qing Zhao
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei, P. R. China
| | - Xing Xin
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei, P. R. China
| | - Ya-Qi Zhang
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei, P. R. China
| | - Na Hu
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei, P. R. China
| | - Yuan-Yuan Ma
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei, P. R. China
| | - Zhan-Gang Han
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei, P. R. China
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16
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Kaledin AL, Yin Q, Hill CL, Lian T, Musaev DG. Ion-pairing in polyoxometalate chemistry: impact of fully hydrated alkali metal cations on properties of the keggin [PW 12O 40] 3- anion. Dalton Trans 2020; 49:11170-11178. [PMID: 32748937 DOI: 10.1039/d0dt02239j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The counterions of polyoxometalates (POMs) impact properties and applications of this growing class of inorganic clusters. Here, we used density functional theory (DFT) to elucidate the impact of fully hydrated alkali metal cations on the geometry, electronic structure, and chemical properties of the polyoxotungstate anion [PW12O40]3-. The calculations show that the HOMO of the free anion [PW12O40]3- is a linear combination of the 2p AOs of the bridging oxygens, and the first few LUMOs are the 5d orbitals of the tungsten atoms. The S0→ S1 electron excitation, near 3 eV, is associated with the O(2p) → W(5d) transition. Anion/cation complexation leads to formation of [PW12O40]3-[M+(H2O)16]3 ion-pair complexes, where with the increase of atomic number of M, the M+(H2O)16 cluster releases several water molecules and interacts strongly with the polyoxometalate anion. For M = Li, Na and K, [PW12O40]3-[M+(H2O)16]3 is characterized as a "hydrated" ion-pair complex. However, for M = Rb and Cs, it is a "contact" ion-pair complex, where the strong anion-cation interaction makes it a better electron acceptor than the "hydrated" ion-pair complexes. Remarkably, the electronic excitations in the visible part of the absorption spectrum of these complexes are predominantly solvent-to-POM charge transfer transitions (i.e. intermolecular CT). The ratio of the number of intermolecular charge transfer transitions to the number of O(2p)-to-W(5d) valence (i.e. intramolecular) transitions increases with the increasing atomic number of the alkali metals.
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Affiliation(s)
- Alexey L Kaledin
- Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA.
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17
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Petrus E, Segado M, Bo C. Nucleation mechanisms and speciation of metal oxide clusters. Chem Sci 2020; 11:8448-8456. [PMID: 34123104 PMCID: PMC8163382 DOI: 10.1039/d0sc03530k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 07/31/2020] [Indexed: 11/24/2022] Open
Abstract
The self-assembly mechanisms of polyoxometalates (POMs) are still a matter of discussion owing to the difficult task of identifying all the chemical species and reactions involved. We present a new computational methodology that identifies the reaction mechanism for the formation of metal-oxide clusters and provides a speciation model from first-principles and in an automated manner. As a first example, we apply our method to the formation of octamolybdate. In our model, we include variables such as pH, temperature and ionic force because they have a determining effect on driving the reaction to a specific product. Making use of graphs, we set up and solved 2.8 × 105 multi-species chemical equilibrium (MSCE) non-linear equations and found which set of reactions fitted best with the experimental data available. The agreement between computed and experimental speciation diagrams is excellent. Furthermore, we discovered a strong linear dependence between DFT and empirical formation constants, which opens the door for a systematic rescaling.
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Affiliation(s)
- Enric Petrus
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 43007 Tarragona Spain
| | - Mireia Segado
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 43007 Tarragona Spain
| | - Carles Bo
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 43007 Tarragona Spain
- Departament de Química Física i Inorgánica, Universitat Rovira i Virgili Marcel·lí Domingo s/n 43007 Tarragona Spain
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18
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Tanuhadi E, Al-Sayed E, Novitchi G, Roller A, Giester G, Rompel A. Cation-Directed Synthetic Strategy Using 4f Tungstoantimonates as Nonlacunary Precursors for the Generation of 3d-4f Clusters. Inorg Chem 2020; 59:8461-8467. [PMID: 32442371 PMCID: PMC7298720 DOI: 10.1021/acs.inorgchem.0c00890] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
![]()
The first synthetic
pathway using a series of four nonlacunary
4f-heterometal-substituted polyoxotungstate clusters Na21[(Ln(H2O)(OH)2(CH3COO))3(WO4)(SbW9O33)3]·nH2O (NaLnSbW9; Ln = TbIII, DyIII, HoIII, ErIII, YIII) as precursors for the directed
preparation of nine new 3d–4f heterometallic tungstoantimonates
K5Na12H3[TM(H2O)Ln3(H2O)5(W3O11)(SbW9O33)3]·nH2O (KTMLnSbW9; TM = CoII, NiII; Ln = TbIII, DyIII, HoIII, ErIII, YIII) has been developed.
Systematic studies revealed an increased K content in the aqueous
acidic reaction mixture to be the key step in the cation-directed
preparation of 3d–4f compounds; among those, the Co-containing
members represent the first examples of KCoLnSbW9 (Ln = TbIII, DyIII, HoIII, ErIII, YIII) heterometallic tungstoantimonates
exhibiting the SbW9 building
block. All 13 compounds have been characterized thoroughly in the
solid state by powder and single-crystal X-ray diffraction (XRD),
revealing a cyclic trimeric polyoxometalate architecture with three SbW9 units encapsulating a planar
triangle of LnIII ions in the case of NaLnSbW9 and a heterometallic core of one TMII and three LnIII for KTMLnSbW9 (TM = CoII, NiII; Ln =
TbIII, DyIII, HoIII, ErIII, YIII). The results obtained by XRD are supplemented
by complementary characterization methods in the solid state such
as IR spectroscopy, thermogravimetric analysis, and elemental analysis
as well as in solution by UV–vis spectroscopy. Detailed magnetic
studies on the representative compounds KTMDySbW9 (TM = CoII, NiII) and KCoYSbW9 of the series revealed field-induced
slow magnetic relaxation. The first step-by-step
synthetic protocol using preformed
4f tungstoantimonate clusters as nonlacunary precursors for the controlled
preparation and thorough characterization of a family of nine new
3d−4f heterometallic polyoxometalates [TM(H2O)Ln3(H2O)5(W3O11)(SbW9O33)3]20- (KTMLnSbW9) (TM = CoII, NiII; Ln = TbIII, DyIII, HoIII, ErIII, YIII) is reported. Magnetic studies on the
DyIII-containing representatives [TM(H2O)Dy3(H2O)5(W3O11)(SbW9O33)3]20− (TM = CoII, NiII) show single-molecule-magnet behavior.
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Affiliation(s)
- Elias Tanuhadi
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien, 1090 Wien, Austria
| | - Emir Al-Sayed
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien, 1090 Wien, Austria
| | - Ghenadie Novitchi
- Laboratoire National des Champs Magnetiques IntensesCNRS, 25 rue des Martyrs, 38042 Grenoble Cedex 9, France
| | - Alexander Roller
- Fakultät für Chemie, Zentrum für Röntgenstrukturanalyse, Universität Wien, 1090 Wien, Austria
| | - Gerald Giester
- , Fakultät für Geowissenschaften, Geographie und Astronomie, Institut für Mineralogie und KristallographieUniversität Wien, 1090 Wien, Austria
| | - Annette Rompel
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien, 1090 Wien, Austria
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Pirdosti SF, Khoshnavazi R, Naseri E. Solid-state rearrangement of sandwich-type polyoxometalate-dopamine nanohybrid to the nanoflower Keggin polyoxometalate: synthesis, characterization, and catalytic efficiency. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1753713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | | | - Elham Naseri
- Department of Chemistry, University of Kurdistan, Sanandaj, Iran
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20
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Misra A, Kozma K, Streb C, Nyman M. Beyond Charge Balance: Counter-Cations in Polyoxometalate Chemistry. Angew Chem Int Ed Engl 2020; 59:596-612. [PMID: 31260159 PMCID: PMC6972580 DOI: 10.1002/anie.201905600] [Citation(s) in RCA: 219] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Indexed: 12/13/2022]
Abstract
Polyoxometalates (POMs) are molecular metal-oxide anions applied in energy conversion and storage, manipulation of biomolecules, catalysis, as well as materials design and assembly. Although often overlooked, the interplay of intrinsically anionic POMs with organic and inorganic cations is crucial to control POM self-assembly, stabilization, solubility, and function. Beyond simple alkali metals and ammonium, chemically diverse cations including dendrimers, polyvalent metals, metal complexes, amphiphiles, and alkaloids allow tailoring properties for known applications, and those yet to be discovered. This review provides an overview of fundamental POM-cation interactions in solution, the resulting solid-state compounds, and behavior and properties that emerge from these POM-cation interactions. We will explore how application-inspired research has exploited cation-controlled design to discover new POM materials, which in turn has led to the quest for fundamental understanding of POM-cation interactions.
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Affiliation(s)
- Archismita Misra
- Institute of Inorganic Chemistry IUlm UniversityAlbert-Einstein-Allee 1189081UlmGermany
| | - Karoly Kozma
- Department of ChemistryOregon State UniversityCorvallisOR97331USA
| | - Carsten Streb
- Institute of Inorganic Chemistry IUlm UniversityAlbert-Einstein-Allee 1189081UlmGermany
| | - May Nyman
- Department of ChemistryOregon State UniversityCorvallisOR97331USA
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21
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Floquet S, Abramov PA, Cadot E. Synthesis of giant Mo2O2S2-containing seleno-tungstate architectures: New multisite cation receptors. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Misra A, Kozma K, Streb C, Nyman M. Jenseits von Ladungsausgleich: Gegenkationen in der Polyoxometallat‐Chemie. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905600] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Archismita Misra
- Anorganische Chemie I Universtität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Karoly Kozma
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
| | - Carsten Streb
- Anorganische Chemie I Universtität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - May Nyman
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
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23
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Yang Z, Mu Q, Liang Z, Ma P, Niu J, Wang J. A novel peroxopolyoxoniobate incorporating mixed heteroatoms: [P 2Se 2Nb 6(O 2) 6O 22] 8- . Dalton Trans 2019; 48:13135-13138. [PMID: 31424470 DOI: 10.1039/c9dt02860a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel hetero selenato-phosphato-peroxopolyoxoniobate with the formula Cs4H4[P2Se2Nb6(O2)6O22]·10H2O has been successfully isolated in an acidified aqueous hydrogen peroxide solution. The synthesized cluster represents the first example of a selenium-containing polyoxoniobate. Furthermore, the ESI-MS spectra show that the polyoxoanion structural unit [P2Se2Nb6(O2)6O22]8- remains intact in aqueous solution.
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Affiliation(s)
- Zongfei Yang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
| | - Qiushui Mu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
| | - Zhijie Liang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
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24
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Chen WC, Jiao CQ, Wang XL, Shao KZ, Su ZM. Self-Assembly of Nanoscale Lanthanoid-Containing Selenotungstates: Synthesis, Structures, and Magnetic Studies. Inorg Chem 2019; 58:12895-12904. [PMID: 31532221 DOI: 10.1021/acs.inorgchem.9b01830] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of mid-lanthanide (Ln) ions with the preformed {Se6W39} precursor under reasonably acidic aqueous conditions in the presence of organic amine cations results in an unprecedented nanoscale lanthanide-functionalized polyoxotungstate family, which are rare examples of mid-lanthanide-containing selenotungstates. (C4H10NO)9Na3[Dy3Se3.5W30O107.5(H2O)10]·22H2O (1) and (NH4)3(C2H8N)Na2[Dy4Se6W38O132(H2O)26(OH)6]·18H2O (2) reveal a trimeric Keggin assembly and a cyclic {Se6W38}-based chain, respectively, whereas (NH4)4Na8[Gd4Se6W48O166(H2O)20(OH)4]·21H2O (3) and (NH4)9(C2H8N)4Na5[Ln6Se6W58O202(H2O)20(OH)4]·58H2O (4; Ln = Gd, Tb, or Dy) are a few examples of polyoxometalates consisting of both classical Keggin and Wells-Dawson building blocks, and (NH4)4(C2H8N)5Na13[Ln4Se8W56O196(H2O)x(OH)10]·40H2O (5; Ln = Gd, Tb, or Dy; x = 12 for Gd and Tb and 10 for Dy) features the largest "pure" Wells-Dawson selenotungstate {Se8W56} bearing a length of 3.73 nm. A library of Se-templated species involving the first reported Keggin {α-SeW8} and Wells-Dawson {α-Se2W16} building blocks as well as some decisive assembly factors during the synthesis is responsible for these architectures. All of the compounds were structurally characterized in the solid and solution by single-crystal X-ray diffraction, IR, thermogravimetric-differential thermal analysis, and electrospray ionization mass spectrometry. Magnetic properties indicate that 1 and 4-Dy show probable single-molecule-magnet behavior with obvious frequency dependence, whereas 3 and 4-Gd present the antiferromagnetic interactions between the GdIII centers.
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Affiliation(s)
- Wei-Chao Chen
- Key Laboratory of Polyoxometalate Science of Ministry of Education Institute of Functional Materials Chemistry, Department of Chemistry , Northeast Normal University , Changchun , Jilin 130024 , China
| | - Cheng-Qi Jiao
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , Dalian 116024 , China
| | - Xin-Long Wang
- Key Laboratory of Polyoxometalate Science of Ministry of Education Institute of Functional Materials Chemistry, Department of Chemistry , Northeast Normal University , Changchun , Jilin 130024 , China
| | - Kui-Zhan Shao
- Key Laboratory of Polyoxometalate Science of Ministry of Education Institute of Functional Materials Chemistry, Department of Chemistry , Northeast Normal University , Changchun , Jilin 130024 , China
| | - Zhong-Min Su
- Key Laboratory of Polyoxometalate Science of Ministry of Education Institute of Functional Materials Chemistry, Department of Chemistry , Northeast Normal University , Changchun , Jilin 130024 , China.,Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, School of Chemistry and Environmental Engineering , Changchun University of Science and Technology , Changchun 130024 , China
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25
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Wan R, Li H, Ma X, Liu Z, Singh V, Ma P, Zhang C, Niu J, Wang J. Preparation, characterization and electrocatalysis performance of a trimeric ruthenium-substituted isopolytungstate. Dalton Trans 2019; 48:10327-10336. [DOI: 10.1039/c9dt01615e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The ruthenium-containing isopolytungstate Rb10K3H6[SeO3(H9Ru5.5W30.5O114)]Cl3·48H2O was isolated and then served as a catalyst, showing electrochemical catalytic activity towards the oxidation reaction of nitrite.
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Affiliation(s)
- Rong Wan
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Huafeng Li
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Xinyi Ma
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Zhen Liu
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Vikram Singh
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Chao Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
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26
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Anjass MH, Deisböck M, Greiner S, Fichtner M, Streb C. Differentiating Molecular and Solid-State Vanadium Oxides as Active Materials in Battery Electrodes. ChemElectroChem 2018. [DOI: 10.1002/celc.201801406] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Montaha H. Anjass
- Institute of Inorganic Chemistry I; Ulm University; Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU); Helmholtzstr. 11 89081 Ulm Germany
| | - Max Deisböck
- Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU); Helmholtzstr. 11 89081 Ulm Germany
| | - Simon Greiner
- Institute of Inorganic Chemistry I; Ulm University; Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU); Helmholtzstr. 11 89081 Ulm Germany
| | - Maximilian Fichtner
- Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU); Helmholtzstr. 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT); Institute of Nanotechnology P.O. Box 3640; 76021 Karlsruhe Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I; Ulm University; Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU); Helmholtzstr. 11 89081 Ulm Germany
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27
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Paul S, Sreejith SS, Roy S. pH-induced phase transition and crystallization of soft-oxometalates (SOMs) into polyoxometalates (POMs): a study on crystallization from colloids. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:1274-1283. [PMID: 30398179 DOI: 10.1107/s2053229618007143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/11/2018] [Indexed: 11/10/2022]
Abstract
In this work, we demonstrate a simple approach for growing 1D (one-dimensional) inorganic chains of K(C6H16N)3Mo8O26·H2O polyoxometalates (POMs) from its colloidal soft-oxometalate (SOM) phase through the variation of pH. The structure is composed mainly of a 1D inorganic chain with a β-Mo8O264- binding node linked using K+ via Mo-O-K linkages, which results in a cuboctahedral geometry for the K+ ions. Crystal structure and Hirshfeld surface studies reveal the role of triethylammonium cations in restricting the growth of the 1D chain into 2D/3D (two-/three-dimensional) structures. During the nucleation process from the heterogeneous SOM phase, some of the intermolecular interactions in the dispersion phase are retained in the crystal structure, which was evidenced from residual O...O interactions. The crystallization of the species from its colloidal form as a function of pH was studied by the use of Raman spectroscopy and it was found that the increase in volume fraction of the β-Mo8O264- species in the crystallizing colloidal mixture with the decrease in pH is responsible for the nucleation. This was monitored by time-dependent DLS (dynamic light scattering) measurement and zeta-potential studies, revealing the co-existence of both the crystal and the colloidal forms at pH 3-2. This brings us to the conclusion that in the crystallization of POMs, the colloidal SOM phase precedes the crystalline POM phase which occurs via a phase transition. This work could open up avenues for the study of POM formation from the stand-point of colloidal chemistry and SOMs.
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Affiliation(s)
- Shounik Paul
- EFAML, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, Hubei, People's Republic of China
| | - S S Sreejith
- EFAML, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, Hubei, People's Republic of China
| | - Soumyajit Roy
- EFAML, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, Hubei, People's Republic of China
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28
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Mesomorphic Behavior in Silver(I) N-(4-Pyridyl) Benzamide with Aromatic π⁻π Stacking Counterions. MATERIALS 2018; 11:ma11091666. [PMID: 30205605 PMCID: PMC6163786 DOI: 10.3390/ma11091666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/03/2018] [Accepted: 09/03/2018] [Indexed: 01/22/2023]
Abstract
Organic semiconductor materials composed of π–π stacking aromatic compounds have been under intense investigation for their potential uses in flexible electronics and other advanced technologies. Herein we report a new family of seven π–π stacking compounds of silver(I) bis-N-(4-pyridyl) benzamide with varying counterions, namely [Ag(NPBA)2]X, where NPBA is N-(4-pyridyl) benzamine, X = NO3− (1), ClO4− (2), CF3SO3− (3), PF6− (4), BF4− (5), CH3PhSO3− (6), and PhSO3− (7), which form extended π−π stacking networks in one-dimensional (1D), 2D and 3D directions in the crystalline solid-state via the phenyl moiety, with average inter-ring distances of 3.823 Å. Interestingly, the counterions that contain π–π stacking-capable groups, such as in 6 and 7, can induce the formation of mesomorphic phases at 130 °C in dimethylformamide (DMF), and can generate highly branched networks at the mesoscale. Atomic force microscopy studies showed that 2D interconnected fibers form right after nucleation, and they extend from ~30 nm in diameter grow to reach the micron scale, which suggests that it may be possible to stop the process in order to obtain nanofibers. Differential scanning calorimetry studies showed no remarkable thermal behavior in the complexes in the solid state, which suggests that the mesomorphic phases originate from the mechanisms that occur in the DMF solution at high temperatures. An all-electron level simulation of the band gaps using NRLMOL (Naval Research Laboratory Molecular Research Library) on the crystals gave 3.25 eV for (1), 3.68 eV for (2), 1.48 eV for (3), 5.08 eV for (4), 1.53 eV for (5), and 3.55 eV for (6). Mesomorphic behavior in materials containing π–π stacking aromatic interactions that also exhibit low-band gap properties may pave the way to a new generation of highly branched organic semiconductors.
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29
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Xin X, Tian X, Yu H, Han Z. Synthesis of Hybrid Phosphomolybdates and Application as Highly Stable and Effective Catalyst for the Reduction of Cr(VI). Inorg Chem 2018; 57:11474-11481. [DOI: 10.1021/acs.inorgchem.8b01321] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xing Xin
- College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei 050024, PR China
| | - Xuerui Tian
- College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei 050024, PR China
| | - Haitao Yu
- College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei 050024, PR China
| | - Zhangang Han
- College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei 050024, PR China
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30
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Sharifironizi M, Szymanowski JES, Qiu J, Castillo S, Hickam S, Burns PC. Charge Density Influence on Enthalpy of Formation of Uranyl Peroxide Cage Cluster Salts. Inorg Chem 2018; 57:11456-11462. [DOI: 10.1021/acs.inorgchem.8b01300] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Melika Sharifironizi
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jennifer E. S. Szymanowski
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jie Qiu
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Sarah Castillo
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Sarah Hickam
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Peter C. Burns
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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31
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Kibler AJ, Martín C, Cameron JM, Rogalska A, Dupont J, Walsh DA, Newton GN. Physical and Electrochemical Modulation of Polyoxometalate Ionic Liquids via Organic Functionalization. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800578] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Alexander J. Kibler
- GSK Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus NG7 2GA Nottingham UK
| | - Carmen Martín
- GSK Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus NG7 2GA Nottingham UK
| | - Jamie M. Cameron
- GSK Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus NG7 2GA Nottingham UK
| | - Agata Rogalska
- GSK Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus NG7 2GA Nottingham UK
| | - Jairton Dupont
- GSK Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus NG7 2GA Nottingham UK
- UFRGS; Institute of Chemistry; Av. Bento Gonçalves, 9500 91501-970 Porto Alegre Rio Grande do Sul Brazil
| | - Darren A. Walsh
- GSK Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus NG7 2GA Nottingham UK
| | - Graham N. Newton
- GSK Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus NG7 2GA Nottingham UK
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32
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Hsu LC, Cho YL, Liu YT, Tzou YM, Teah HY. Capacity and recycling of polyoxometalate applied in As(III) oxidation by Fe(II)-Amended zero-valent aluminum. CHEMOSPHERE 2018; 200:1-7. [PMID: 29471163 DOI: 10.1016/j.chemosphere.2018.02.071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 01/24/2018] [Accepted: 02/10/2018] [Indexed: 06/08/2023]
Abstract
Arsenic remediation is often initiated by oxidizing As(III) to As(V) to alleviate its toxicity and mobility. Due to the easy availability, zero-valent Al (ZVAl) like Al can was considered as potential alternatives to facilitate As(III) oxidation. This study determined the capability and recycling of polyoxometalate (POM) to catalyze As(III) oxidation in Fe(II)-amended ZVAl systems. POM acquired electrons from ZVAl more effectively at pH 1 than at pH 2. While 76% of the reduced POM [POM(e-)] reacted with O2(g) to generate H2O2 at pH 1, only 60% of POM(e-) was used to produce H2O2 at pH 2. The remaining POM(e-) was oxidized by the generated H2O2. Such additional consumption of POM(e-) and H2O2 led to the incomplete As(III) oxidation in the system without residual ZVAl and emphasized the need for a continuous electron supply from ZVAl to compensate the depletion of POM(e-). After the hydrolyzation at pH 6.0, the XANES data evidenced that not only As(V) but WO4 released from the POM retained on surfaces of Al/Fe hydroxides. The competition for sorption sites on Al/Fe hydroxides between As(V) and WO4 led to the incomplete As removal. Despite the loss of WO4, the POM re-polymerized at pH 1 still showed the comparable capability to catalyze As(III) oxidation with original POM. This study revealed electron transfer pathways from ZVAl to As(III) as catalyzed by POM and evidenced the effective POM recycling after As removal, which lowers the cost of POM application and turns the ZVAl/Fe(II)/POM/O2 system into a practical strategy for As remediation.
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Affiliation(s)
- Liang-Ching Hsu
- Scientific Research Division, National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu 300, Taiwan
| | - Yen-Lin Cho
- Department of Soil and Environmental Sciences, National Chung-Hsing University, 145 Xingda Rd., Taichung 402, Taiwan
| | - Yu-Ting Liu
- Department of Soil and Environmental Sciences, National Chung-Hsing University, 145 Xingda Rd., Taichung 402, Taiwan.
| | - Yu-Min Tzou
- Department of Soil and Environmental Sciences, National Chung-Hsing University, 145 Xingda Rd., Taichung 402, Taiwan
| | - Heng Yi Teah
- Division of Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo, 332 Building of Environmental Studies, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8563, Japan
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33
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Jin GB, Lin J, Estes SL, Skanthakumar S, Soderholm L. Influence of Countercation Hydration Enthalpies on the Formation of Molecular Complexes: A Thorium–Nitrate Example. J Am Chem Soc 2017; 139:18003-18008. [DOI: 10.1021/jacs.7b09363] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Geng Bang Jin
- Chemical Sciences and Engineering
Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Jian Lin
- Chemical Sciences and Engineering
Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Shanna L. Estes
- Chemical Sciences and Engineering
Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - S. Skanthakumar
- Chemical Sciences and Engineering
Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - L. Soderholm
- Chemical Sciences and Engineering
Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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34
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Kumar A, Gupta AK, Devi M, Gonsalves KE, Pradeep CP. Engineering Multifunctionality in Hybrid Polyoxometalates: Aromatic Sulfonium Octamolybdates as Excellent Photochromic Materials and Self-Separating Catalysts for Epoxidation. Inorg Chem 2017; 56:10325-10336. [DOI: 10.1021/acs.inorgchem.7b01143] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ashwani Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand 175 005, Himachal Pradesh, India
| | - Abhishek Kumar Gupta
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand 175 005, Himachal Pradesh, India
| | - Manisha Devi
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand 175 005, Himachal Pradesh, India
| | - Kenneth E. Gonsalves
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand 175 005, Himachal Pradesh, India
| | - Chullikkattil P. Pradeep
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand 175 005, Himachal Pradesh, India
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35
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Farhadi S, Dusek M, Siadatnasab F, Eigner V, Mokhtari andani A. First organic–inorganic hybrid nanomaterial constructed from a Keggin-type polyoxometallate and a copper-dithiocarbamate complex: Sonochemical synthesis, crystal structure and its adsorption performance for organic dye pollutants. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.01.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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36
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Santos F, Nogueira H, Cavaleiro A, de Matos Gomes E, Belsley M. A new synthetic route for compounds prepared from Keggin heteropolyacids and pyridine derivatives. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.05.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Jassal AK, Rana LK, Hundal G. Structure directing role of amines and water molecules in the self-assembly of polyoxomolybdates. CrystEngComm 2017. [DOI: 10.1039/c6ce02640k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Exploring Self-Assembly and the Self-Organization of Nanoscale Inorganic Polyoxometalate Clusters. ADVANCES IN INORGANIC CHEMISTRY 2017. [DOI: 10.1016/bs.adioch.2016.12.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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39
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Sun S, Liu X, Yang L, Tan H, Wang E. Capillary Zone Electrophoresis as a Tool to Monitor the Stability and Hydrolytic Equilibria of Strandberg‐Type Polyoxometalates in Aqueous Solution. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600409] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Shucheng Sun
- Department of ChemistryNortheast Normal University5268 Renmin Street130024ChangchunJilin ProvinceP. R. China
| | - Xin Liu
- Department of ChemistryNortheast Normal University5268 Renmin Street130024ChangchunJilin ProvinceP. R. China
| | - Li Yang
- Department of ChemistryNortheast Normal University5268 Renmin Street130024ChangchunJilin ProvinceP. R. China
| | - Huaqiao Tan
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of ChemistryNortheast Normal University5268 Renmin Street130024ChangchunJilin ProvinceP. R. China
| | - EnBo Wang
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of ChemistryNortheast Normal University5268 Renmin Street130024ChangchunJilin ProvinceP. R. China
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40
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AlDamen MA, Atta SB, Haddad SF. Inorganic architecture based on a {[Ca(H2O)]6[P4W6O34]2}12– building block: Countercation effect on the lattice symmetry. J STRUCT CHEM+ 2016. [DOI: 10.1134/s0022476616040132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Cao J, Xu C, Liu C, Liu W. Cation-Anion Interactions and Synergistic Catalysis by Supramolecular Polyoxometalate Complexes [C10H18N]n[XM12O40]. ChemistrySelect 2016. [DOI: 10.1002/slct.201600325] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jie Cao
- School of Chemistry; Beijing Institute of Technology; Zhonguancun South Street 5th Beijing 100081 PR China
| | - Chong Xu
- School of Chemistry; Beijing Institute of Technology; Zhonguancun South Street 5th Beijing 100081 PR China
| | - Chang Liu
- School of Chemistry; Beijing Institute of Technology; Zhonguancun South Street 5th Beijing 100081 PR China
| | - WeiQi Liu
- School of Chemistry; Beijing Institute of Technology; Zhonguancun South Street 5th Beijing 100081 PR China
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42
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Co-crystallization of Keggin type polyoxometalates [HL]3[PW12O40] and [Ln(DMF)8][PW12O40] (Ln=La, Dy, Yb) (L=N-(2-hydroxyphenyl)-3-methoxy-salicylideneamine): Syntheses, structures and magnetic properties. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.11.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Li N, Fang S, Sun Z, Liu R, Xu L. Investigation on the photoconductivity of polyoxometalates. RSC Adv 2016. [DOI: 10.1039/c6ra15544h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The Keggin-type tungsten-series polyoxometalates photoconductivities and gas sensing performance for ethanol.
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Affiliation(s)
- Na Li
- Key Laboratory of Polyoxometalates Science of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Shuna Fang
- Key Laboratory of Polyoxometalates Science of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Zhixia Sun
- Key Laboratory of Polyoxometalates Science of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Ran Liu
- Key Laboratory of Polyoxometalates Science of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Lin Xu
- Key Laboratory of Polyoxometalates Science of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun 130024
- P.R. China
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44
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Jangir R, Antony R, Murugavel R. New sterically encumbered arylimido hexamolybdates for organic oxidation reactions. NEW J CHEM 2016. [DOI: 10.1039/c5nj02330k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Surface modification of the parent hexamolybdate by aryl amines results in useful catalysts for the oxidation of cyclohexene to cyclohexene epoxide and benzyl alcohol to benzaldehyde and benzoic acid.
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Affiliation(s)
- Ritambhara Jangir
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- India
| | - Rajendran Antony
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- India
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45
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Matsuki Y, Hoshino T, Takaku S, Matsunaga S, Nomiya K. Synthesis and Molecular Structure of a Water-Soluble, Dimeric Tri-Titanium(IV)-Substituted Wells-Dawson Polyoxometalate Containing Two Bridging (C5Me5)Rh2+ Groups. Inorg Chem 2015; 54:11105-13. [PMID: 26565933 DOI: 10.1021/acs.inorgchem.5b01206] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel trititanium(IV)-substituted Wells-Dawson polyoxometalate (POM)-based organometallic complex, i.e., a dimeric POM containing two bridging Cp*Rh(2+) groups (Cp* = C5Me5) or [{α-P2W15Ti3O60(OH)2}2(Cp*Rh)2](16-) (D-1) with Ci symmetry, was synthesized in an analytically pure form by a 1:2 -molar ratio reaction of the organometallic precursor [Cp*RhCl2]2 with the separately prepared, monomeric trititanium(IV)-substituted Wells-Dawson POM, "[P2W15Ti3O59(OH)3](9-)" (M-1). The crystalline sample (NaK-D-1) of the water-soluble, mixed sodium/potassium salt of D-1 was obtained in the 14.7% yield, which has been characterized by complete elemental analysis, TG/DTA, FTIR, single-crystal X-ray structure analysis, and solution ((183)W, (31)P, (1)H and (13)C{(1)H}) NMR spectroscopy. Single-crystal X-ray structure analysis revealed that the two species of the protonated Wells-Dawson subunits, "[P2W15Ti3O60(OH)2](10-)" were bridged by the two Cp*Rh(2+) groups, resulting in the an overall Ci symmetry. The Cp*Rh(2+) groups were linked to the two terminal oxygen atoms of the titanium(IV) sites and one edge-sharing oxygen atom of the surface Ti-O-Ti bond. The (183)W NMR of D-1 dissolved in D2O showed that its solution structure was represented as a dimeric POM with a formula of [{α-P2W15Ti3O60(OH)3}2{Cp*Rh(OH)}2](16-) (D-2) with Ci (or S2) symmetry. A trititanium(IV)-substituted Wells-Dawson POM-supported organometallic complex has never been reported so far, and thus D-1 in the solid state and D-2 in solution are the first example of this type of complex.
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Affiliation(s)
- Yusuke Matsuki
- Department of Chemistry, Faculty of Science, Kanagawa University , Hiratsuka, Kanagawa 259-1293, Japan
| | - Takahiro Hoshino
- Department of Chemistry, Faculty of Science, Kanagawa University , Hiratsuka, Kanagawa 259-1293, Japan
| | - Shoko Takaku
- Department of Chemistry, Faculty of Science, Kanagawa University , Hiratsuka, Kanagawa 259-1293, Japan
| | - Satoshi Matsunaga
- Department of Chemistry, Faculty of Science, Kanagawa University , Hiratsuka, Kanagawa 259-1293, Japan
| | - Kenji Nomiya
- Department of Chemistry, Faculty of Science, Kanagawa University , Hiratsuka, Kanagawa 259-1293, Japan
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46
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KHANDOLKAR SAVITAS, RAGHAVAIAH PALLEPOGU, SRINIVASAN BIKSHANDARKOILR. Synthesis, characterization and photochemistry of a new heptamolybdate supported magnesium-aqua coordination complex. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0918-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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47
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Affiliation(s)
- Sa-Sa Wang
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Guo-Yu Yang
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- MOE
Key Laboratory of Cluster Science, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
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48
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Nakamura I, Miras HN, Fujiwara A, Fujibayashi M, Song YF, Cronin L, Tsunashima R. Investigating the formation of "molybdenum blues" with gel electrophoresis and mass spectrometry. J Am Chem Soc 2015; 137:6524-30. [PMID: 25897816 DOI: 10.1021/ja512758j] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The reduction of solutions of acidified molybdate leads to the formation of a family of nanostructured molybdenum blue (MB) wheels which are linked together in a series of complex reaction networks. These networks are complex because the species which define the nodes are extremely labile, unstable, and common to many different networks. Herein, we combine gel electrophoresis and electrospray ionization mass spectrometry (ESI-MS) to investigate the effect of the pH and the ratio of reactants and reducing agents, R (R = [S2O4(2-)]/[MoO4(2-)]), on the complex underlying set of equilibria that make up MBs. By mapping the reaction parameter space given by experimental variables such as pH, R, solvent medium, and type of counterion, we show that the species present range from nanostructured MB wheels (comprising ca. 154 Mo atoms) to smaller molecular capsules, [(SO3)2Mo(V)2Mo(VI)16O54](6-) ({S2Mo18}), and templated hexameric [(μ6-SO3)Mo(V)6O15(μ2-SO3)3](8-)({S4Mo6}) anions. The parallel effects of templation and reduction on the self-assembly process are discussed, taking into consideration the Lewis basicity of the template, the oxidation state of the Mo centers, and the polarity of the reaction medium. Finally, we report a new type of molecular cage (TBA)5[Na(SO3)2(PhPO3)4Mo(V)4Mo(VI)14O49]·nMeCN (1), templated by SO3(2-) anions and decorated by organic ligands. This discovery results from the exploration of the cooperative effect of two anions possessing comparable Lewis basicity, and we believe this constitutes a new synthetic approach for the design of new nanostructured molecular metal oxides and will lead to a greater understanding of the complex reaction networks underpinning the assembly of this family of nanoclusters.
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Affiliation(s)
| | - Haralampos N Miras
- §School of Chemistry, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | | | | | - Yu-Fei Song
- ∥State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029 Beijing, P. R. China
| | - Leroy Cronin
- §School of Chemistry, University of Glasgow, Glasgow G12 8QQ, United Kingdom
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49
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González-Riopedre G, Bermejo MR, Fernández-García MI, González-Noya AM, Pedrido R, Rodríguez-Doutón MJ, Maneiro M. Alkali-Metal-Ion-Directed Self-Assembly of Redox-Active Manganese(III) Supramolecular Boxes. Inorg Chem 2015; 54:2512-21. [DOI: 10.1021/ic501842x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Gustavo González-Riopedre
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - Manuel R. Bermejo
- Centro de Investigación en Química
Biolóxica e Materiais Moleculares, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - M. Isabel Fernández-García
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - Ana M. González-Noya
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
- Centro de Investigación en Química
Biolóxica e Materiais Moleculares, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Rosa Pedrido
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
- Centro de Investigación en Química
Biolóxica e Materiais Moleculares, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - M. Jesús Rodríguez-Doutón
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - Marcelino Maneiro
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
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50
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Fan L, Cao J, Hu C. What can electrospray mass spectrometry of paratungstates in an equilibrating mixture tell us? RSC Adv 2015. [DOI: 10.1039/c5ra18059g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
[W7O24]6−, the main species in an aqueous solution of Na2WO4at pH ≤ 7 proved by NMR and Raman spectroscopy, fails to be detected in ESI-MS due to its ESI-induced dissociation into Lindqvist [W6O19]2−.
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Affiliation(s)
- Linyuan Fan
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- School of Chemistry
- Beijing Institute of Technology
| | - Jie Cao
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- School of Chemistry
- Beijing Institute of Technology
| | - Changwen Hu
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- School of Chemistry
- Beijing Institute of Technology
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