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Research on Polyoxometalate Materials

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Applied Chemistry".

Deadline for manuscript submissions: closed (20 November 2022) | Viewed by 19501

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Guest Editor
College of Chemistry and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130021, Jilin, China
Interests: polyoxometalate; crystal structure; coordination compounds based on polyoxometalates; catalysis of polyoxometalates; electrode material based on polyoxometalates

Special Issue Information

Dear Colleagues,

Polyoxometalates (POMs) are a large and rapidly growing class of early transition metal oxide clusters. POMs are formed via acid-involved condensation reactions from monomeric oxometalate units, thus holding a special position (intermediate state) between monomeric oxometalate units and infinite metal oxide frameworks. Though the first compound of what we term a polyoxometalate was reported about two centuries ago by Berzelius (1826), POMs continue to show remarkable advances and unexpected surprises in both their fundamentals and applications. POMs exhibit a large diversity of structures including saturated structures such as the famous Keggin, Well–Dawson, Anderson, etc., and unsaturated structures such as the vacant Keggin, vacant Well–Dawson, etc. Especially, the unsaturated POMs can act as robust and pure inorganic ligands to coordinate with almost all the transition metals, and then be integrated into the frameworks of POM clusters. The chemical compositions of POMs are mainly Mo, W, V, Nb and Ta. The heteroatom of POMs are more variable, including P, As, B, Al, Si, Ge, S, and so on. It is well known that there is a general correlation between the complexity of the structure of a compound and the functionality that it displays. The wide range of chemical composition variability and a large amount of unusual structural types of POMs can thus exhibit a large number of different properties such as rich solution equilibria, significant chemical and thermal stability, strong acidity, and the ability to act as proton–electron sinks due to their fast and reversible proton-coupled redox processes. Virtually all of the molecular properties of these POMs can be altered by fine-tuning the structure and chemical composition of the POMs at the atomic level. Based on their intrinsic multifunctional nature, POMs have significant applications in catalysis, medicine, and materials science, etc. POMs can not only be used widely in different disciplines, but can also be combined with polymers, oxides, ionic liquids or carbonaceous supports to construct new and advanced composite (hybrid) materials, which have important, extensive applications in catalysis, electrode materials, electrocatalysis, photocatalysis and so on. This Special Issue focuses on the fundamentals of POMs and POM-based materials, including synthetic methods, reactivity, spectroscopic or spectrometric studies, structures, mechanistic insights and DFT calculations, and potential applications, such as redox- and acid-base catalysis, photo- and electrochemistry, magnetism, electronics, optics, bio-medicine, energy conversion and storage, sorption and separation, environmental remediation and medicine. Full papers, communications, and reviews on these topics are welcome.

Dr. Xiaobing Cui
Guest Editor

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Keywords

  • polyoxometalate
  • crystal materials of polyoxometalates
  • coordination compounds based on polyoxometalates
  • catalysis of polyoxometalates
  • electrode material based on polyoxometalates
  • DFT calculations of polyoxometalates
  • composites based on polyoxometalates

Published Papers (12 papers)

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Editorial

Jump to: Research, Review

3 pages, 192 KiB  
Editorial
Special Issue: Research on Polyoxometalate Materials
by Xiao-Bing Cui
Molecules 2023, 28(12), 4662; https://doi.org/10.3390/molecules28124662 - 09 Jun 2023
Cited by 1 | Viewed by 1082
Abstract
The science of polyoxometalates (POMs) has come a long way since molybdenum blue was first described in 1778 [...] Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)

Research

Jump to: Editorial, Review

15 pages, 4414 KiB  
Article
Proton Affinity in the Chemistry of Beta-Octamolybdate: HPLC-ICP-AES, NMR and Structural Studies
by Victoria V. Volchek, Nikolay B. Kompankov, Maxim N. Sokolov and Pavel A. Abramov
Molecules 2022, 27(23), 8368; https://doi.org/10.3390/molecules27238368 - 30 Nov 2022
Cited by 1 | Viewed by 1124
Abstract
The affinity of [β-Mo8O26]4− toward different proton sources has been studied in various conditions. The proposed sites for proton coordination were highlighted with single crystal X-ray diffraction (SCXRD) analysis of (Bu4N)3[β-{Ag(py-NH2)Mo8 [...] Read more.
The affinity of [β-Mo8O26]4− toward different proton sources has been studied in various conditions. The proposed sites for proton coordination were highlighted with single crystal X-ray diffraction (SCXRD) analysis of (Bu4N)3[β-{Ag(py-NH2)Mo8O26]}] (1) and from analysis of reported structures. Structural rearrangement of [β-Mo8O26]4− as a direct response to protonation was studied in solution with 95Mo NMR and HPLC-ICP-AES techniques. A new type of proton transfer reaction between (Bu4N)4[β-Mo8O26] and (Bu4N)4H2[V10O28] in DMSO results in both polyoxometalates transformation into [V2Mo4O19]4−, which was confirmed by the 95Mo, 51V NMR and HPLC-ICP-AES techniques. The same type of reaction with [H4SiW12O40] in DMSO leads to metal redistribution with formation of [W2Mo4O19]2−. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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21 pages, 49737 KiB  
Article
Grafting of Anionic Decahydro-Closo-Decaborate Clusters on Keggin and Dawson-Type Polyoxometalates: Syntheses, Studies in Solution, DFT Calculations and Electrochemical Properties
by Manal Diab, Ana Mateo, Joumada El Cheikh, Zeinab El Hajj, Mohamed Haouas, Alireza Ranjbari, Vincent Guérineau, David Touboul, Nathalie Leclerc, Emmanuel Cadot, Daoud Naoufal, Carles Bo and Sébastien Floquet
Molecules 2022, 27(22), 7663; https://doi.org/10.3390/molecules27227663 - 08 Nov 2022
Cited by 5 | Viewed by 1457
Abstract
Herein we report the synthesis of a new class of compounds associating Keggin and Dawson-type Polyoxometalates (POMs) with a derivative of the anionic decahydro-closo-decaborate cluster [B10H10]2− through aminopropylsilyl ligand (APTES) acting as both a linker and [...] Read more.
Herein we report the synthesis of a new class of compounds associating Keggin and Dawson-type Polyoxometalates (POMs) with a derivative of the anionic decahydro-closo-decaborate cluster [B10H10]2− through aminopropylsilyl ligand (APTES) acting as both a linker and a spacer between the two negatively charged species. Three new adducts were isolated and fully characterized by various NMR techniques and MALDI-TOF mass spectrometry, notably revealing the isolation of an unprecedented monofunctionalized SiW10 derivative stabilized through intramolecular H-H dihydrogen contacts. DFT as well as electrochemical studies allowed studying the electronic effect of grafting the decaborate cluster on the POM moiety and its consequences on the hydrogen evolution reaction (HER) properties. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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13 pages, 1777 KiB  
Article
Organic/Inorganic Species Synergistically Supported Unprecedented Vanadomolybdates
by Tian Chang, Di Qu, Bao Li and Lixin Wu
Molecules 2022, 27(21), 7447; https://doi.org/10.3390/molecules27217447 - 02 Nov 2022
Cited by 6 | Viewed by 1126
Abstract
Vanadomolybdates (VMos), comprised of Mo and V in high valences with O bridges, are one of the most important types of polyoxometalates (POMs), which have high activity due to their strong capabilities of gaining/losing electrons. Compared with other POMs, the preparation of VMos [...] Read more.
Vanadomolybdates (VMos), comprised of Mo and V in high valences with O bridges, are one of the most important types of polyoxometalates (POMs), which have high activity due to their strong capabilities of gaining/losing electrons. Compared with other POMs, the preparation of VMos is difficult due to their relatively low structural stability, especially those with unclassical architectures. To overcome this shortcoming, in this study, triol ligands were applied to synthesize VMos through a beaker reaction in the presence of V2O5, Na2MoO4, and organic species in the aqueous solution. The single-crystal X-ray diffraction results indicate that two VMo clusters, Na4{V5Mo2O19[CH3C(CH2O)3]}∙13H2O and Na4{V5Mo2O19[CH3CH2C(CH2O)3]}∙13H2O, with a similar architecture, were synthesized, which were both stabilized by triol ligand and {MoO6} polyhedron. Both clusters are composed of five V ions and one Mo ion in a classical Lindqvist arrangement with an additional Mo ion, showing an unprecedented hepta-nuclear VMo structure. The counter Na+ cations assemble into one-dimensional channels, which facilitates the transport of protons and was further confirmed by proton conductivity experiments. The present results provide a new strategy to prepare and stabilize VMos, which is applicable for developing other compounds, especially those with untraditional architectures. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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16 pages, 4861 KiB  
Article
First Organic–Inorganic Hybrid Compounds Formed by Ge-V-O Clusters and Transition Metal Complexes of Aromatic Organic Ligands
by Hai-Yang Guo, Hui Qi, Xiao Zhang and Xiao-Bing Cui
Molecules 2022, 27(14), 4424; https://doi.org/10.3390/molecules27144424 - 11 Jul 2022
Cited by 3 | Viewed by 1556
Abstract
Three compounds based on Ge-V-O clusters were hydrothermally synthesized and characterized by IR, UV-Vis, XRD, ESR, elemental analysis and X-ray crystal structural analysis. Both [Cd(phen)(en)]2[Cd2(phen)2V12O40Ge8(OH)8(H2O)]∙12.5H2O [...] Read more.
Three compounds based on Ge-V-O clusters were hydrothermally synthesized and characterized by IR, UV-Vis, XRD, ESR, elemental analysis and X-ray crystal structural analysis. Both [Cd(phen)(en)]2[Cd2(phen)2V12O40Ge8(OH)8(H2O)]∙12.5H2O (1) and [Cd(DETA)]2[Cd(DETA)2]0.5[Cd2(phen)2V12O41Ge8(OH)7(0.5H2O)]∙7.5H2O (2) (1,10-phen = 1,10-phenanthroline, en = ethylenediamine, DETA = diethylenetriamine) are the first Ge-V-O cluster compounds containing aromatic organic ligands. Compound 1 is the first dimer of Ge-V-O clusters, which is linked by a double bridge of two [Cd(phen)(en)]2+. Compound 2 exhibits an unprecedented 1-D chain structure formed by Ge-V-O clusters and [Cd2(DETA)2]4+ transition metal complexes (TMCs). [Cd(en)3]{[Cd(η2-en)2]3[Cd(η2-en)(η22-en)(η2-en)Cd][Ge6V15O48(H2O)]}∙5.5H2O (3) is a novel 3-D structure which is constructed from [Ge6V15O48(H2O)]12− and four different types of TMCs. We also synthesized [Zn2(enMe)3][Zn(enMe)]2[Zn(enMe)2(H2O)]2[Ge6V15O48(H2O)]∙3H2O (4) and [Cd(en)2]2{H8[Cd(en)]2Ge8V12O48(H2O)}∙6H2O (5) (enMe = 1,2-propanediamine), which have been reported previously. In addition, the catalytic properties of these five compounds for styrene epoxidation have been assessed. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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12 pages, 2327 KiB  
Article
Designed Syntheses of Three {Ni6PW9}-Based Polyoxometalates, from Isolated Cluster to Cluster-Organic Helical Chain
by Chong-An Chen, Yan Liu and Guo-Yu Yang
Molecules 2022, 27(13), 4295; https://doi.org/10.3390/molecules27134295 - 04 Jul 2022
Cited by 2 | Viewed by 1601
Abstract
Three new hexa-Ni-substituted Keggin-type polyoxometalates (POMs), [Ni6(OH)3- (DACH)3(H2O)6(PW9O34)]·31H2O (1), [Ni(DACH)2][Ni6(OH)3(DACH)3(HMIP)2(H2O)2(PW9 [...] Read more.
Three new hexa-Ni-substituted Keggin-type polyoxometalates (POMs), [Ni6(OH)3- (DACH)3(H2O)6(PW9O34)]·31H2O (1), [Ni(DACH)2][Ni6(OH)3(DACH)3(HMIP)2(H2O)2(PW9O34)]·56 H2O (2), and [Ni(DACH)2][Ni6(OH)3(DACH)2(AP)(H2O)5(PW9O34)]·2H2O (3) (DACH = 1,2-Diami- nocyclohexane, MIP = 5-Methylisophthalate, AP = Adipate) were successfully made in the presence of DACH under hydrothermal conditions. 1 is an isolated hexa-Ni-substituted Keggin unit decorated by DACH. In order to further construct POM cluster-organic frameworks (POMCOFs) on the basis of 1, by analyzing the steric hindrances and orientations of the POM units, the rigid HMIP and flexible AP ligands were successively incorporated, and another anionic monomeric POM 2 and the new 1D POM cluster organic chain (POMCOC) 3 were obtained. HMIP ligand still acts as a decorating group on the Ni6 core of 2 but results in the different spatial arrangement of the {Ni6PW9} units. AP ligands in 3 successfully bridge adjacent isolated POM cluster units to 1D POMCOC with left-hand helices. The AP in 3 is the longest aliphatic carboxylic acid ligand in POMs, and the 1D POM cluster-AP helical chain represents the first 1D POMCOC with a helical feature. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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12 pages, 3068 KiB  
Article
Vanadium-Substituted Dawson-Type Polyoxometalate–TiO2 Nanowire Composite Film as Advanced Cathode Material for Bifunctional Electrochromic Energy-Storage Devices
by Yu Fu, Yanyan Yang, Dongxue Chu, Zefeng Liu, Lili Zhou, Xiaoyang Yu and Xiaoshu Qu
Molecules 2022, 27(13), 4291; https://doi.org/10.3390/molecules27134291 - 04 Jul 2022
Cited by 4 | Viewed by 1587
Abstract
Polyoxometalates (POMs) demonstrate potential for application in the development of integrated smart energy devices based on bifunctional electrochromic (EC) optical modulation and electrochemical energy storage. Herein, a nanocomposite thin film composed of a vanadium-substituted Dawson-type POM, i.e., K7[P2W17 [...] Read more.
Polyoxometalates (POMs) demonstrate potential for application in the development of integrated smart energy devices based on bifunctional electrochromic (EC) optical modulation and electrochemical energy storage. Herein, a nanocomposite thin film composed of a vanadium-substituted Dawson-type POM, i.e., K7[P2W17VO62]·18H2O, and TiO2 nanowires were constructed via the combination of hydrothermal and layer-by-layer self-assembly methods. Through scanning electron microscopy and energy-dispersive spectroscopy characterisations, it was found that the TiO2 nanowire substrate acts as a skeleton to adsorb POM nanoparticles, thereby avoiding the aggregation or stacking of POM particles. The unique three-dimensional core−shell structures of these nanocomposites with high specific surface areas increases the number of active sites during the reaction process and shortens the ion diffusion pathway, thereby improving the electrochemical activities and electrical conductivities. Compared with pure POM thin films, the composite films showed improved EC properties with a significant optical contrast (38.32% at 580 nm), a short response time (1.65 and 1.64 s for colouring and bleaching, respectively), an excellent colouration efficiency (116.5 cm2 C−1), and satisfactory energy-storage properties (volumetric capacitance = 297.1 F cm−3 at 0.2 mA cm−2). Finally, a solid-state electrochromic energy-storage (EES) device was fabricated using the composite film as the cathode. After charging, the constructed device was able to light up a single light-emitting diode for 20 s. These results highlight the promising features of POM-based EES devices and demonstrate their potential for use in a wide range of applications, such as smart windows, military camouflage, sensors, and intelligent systems. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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9 pages, 1879 KiB  
Communication
Detecting the Subtle Photo-Responsive Conformational Bistability of Monomeric Azobenzene Functionalized Keggin Polyoxometalates by Using Ion-Mobility Mass Spectrometry
by Bo Qi, Luran Jiang, Sai An, Wei Chen and Yu-Fei Song
Molecules 2022, 27(12), 3927; https://doi.org/10.3390/molecules27123927 - 19 Jun 2022
Cited by 1 | Viewed by 1197
Abstract
Accurately characterizing the conformational variation of novel molecular assemblies is important but often ignored due to limited characterization methods. Herein, we reported the use of ion-mobility mass spectrometry (IMS/MS) to investigate the conformational changes of four azobenzene covalently functionalized Keggin hybrids (azo-Keggins, compounds [...] Read more.
Accurately characterizing the conformational variation of novel molecular assemblies is important but often ignored due to limited characterization methods. Herein, we reported the use of ion-mobility mass spectrometry (IMS/MS) to investigate the conformational changes of four azobenzene covalently functionalized Keggin hybrids (azo-Keggins, compounds 14). The as-prepared azo-Keggins showed the general molecular formula of [C16H36N]4[SiW11O40(Si(CH2)3NH–CO(CH2)nO–C6H4N=NC6H4–R)2] (R = H, n = 0 (1); R = NO2, n = 0 (2); R = H, n = 5 (3); R = H, n = 10 (4)). The resultant azo-Keggins maintained stable monomeric states in the gas phase with intact molecular structures. Furthermore, the subtle photo-responsive trans-cis conformational variations of azo-Keggins were clearly revealed by the molecular shape-related collision cross-section value difference ranging from 2.44 Å2 to 6.91 Å2. The longer the alkyl chains linkers were, the larger the conformational variation was. Moreover, for compounds 1 and 2, higher stability in trans-conformation can be observed, while for compounds 3 and 4, bistability can be achieved for both of them. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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14 pages, 3415 KiB  
Article
Cations Modulated Assembly of Triol-Ligand Modified Cu-Centered Anderson-Evans Polyanions
by Yiran Wang, Fengxue Duan, Xiaoting Liu and Bao Li
Molecules 2022, 27(9), 2933; https://doi.org/10.3390/molecules27092933 - 04 May 2022
Cited by 8 | Viewed by 1373
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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13 pages, 39391 KiB  
Article
Controllable Assembly of Vanadium-Containing Polyoxoniobate-Based Materials and Their Electrocatalytic Activity for Selective Benzyl Alcohol Oxidation
by Xiaoxia Li, Ni Zhen, Chengpeng Liu, Di Zhang, Jing Dong, Yingnan Chi and Changwen Hu
Molecules 2022, 27(9), 2862; https://doi.org/10.3390/molecules27092862 - 30 Apr 2022
Cited by 6 | Viewed by 1650
Abstract
During the controllable synthesis of two vanadium-containing Keggin-type polyoxoniobates (PONbs), [Ni(en)2]5[PNb12O40(VO)5](OH)5·18H2O (1) and [Ni(en)3]5[PNb12O40(VO)2]∙17H2O ( [...] Read more.
During the controllable synthesis of two vanadium-containing Keggin-type polyoxoniobates (PONbs), [Ni(en)2]5[PNb12O40(VO)5](OH)5·18H2O (1) and [Ni(en)3]5[PNb12O40(VO)2]∙17H2O (2, en = ethylenediamine) are realized by changing the vanadium source and hydrothermal temperature. Compounds 1 and 2 have been thoroughly characterized by single-crystal X-ray diffraction analysis, FT-IR spectra, X-ray photoelectron spectrum (XPS), powder X-ray diffraction (PXRD), etc. Compound 1 contains a penta-capped Keggin-type polyoxoniobate {PNb12O40(VO)5}, which is connected by adjacent [Ni(en)2]2+ units into a three-dimensional (3D) organic-inorganic framework, representing the first nickel complexes connected vanadoniobate-based 3D material. Compound 2 is a discrete di-capped Keggin-type polyoxoniobate {PNb12O40(VO)2} with [Ni(en)3]2+ units as counter cations. Compounds 1 and 2 have poor solubility in common solvents and can keep stable in the pH range of 4 to 14. Notably, both 1 and 2 as electrode materials are active for the selective oxidation of benzyl alcohol to benzaldehyde. Under ambient conditions without adding an alkaline additive, compound 1 as a noble metal free electrocatalyst can achieve 92% conversion of benzyl alcohol, giving a Faraday efficiency of 93%; comparatively, 2 converted 79% of the substrate with a Faraday efficiency of 84%. The control experiments indicate that both the alkaline polyoxoniobate cluster and the capped vanadium atoms play an important role during the electrocatalytic oxidation process. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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Review

Jump to: Editorial, Research

17 pages, 4076 KiB  
Review
Recent Advances of Ti/Zr-Substituted Polyoxometalates: From Structural Diversity to Functional Applications
by Zhihui Ni, Hongjin Lv and Guoyu Yang
Molecules 2022, 27(24), 8799; https://doi.org/10.3390/molecules27248799 - 12 Dec 2022
Cited by 5 | Viewed by 1833
Abstract
Polyoxometalates (POMs), a large family of anionic polynuclear metal–oxo clusters, have received considerable research attention due to their structural versatility and diverse physicochemical properties. Lacunary POMs are key building blocks for the syntheses of functional POMs due to their highly active multidentate O-donor [...] Read more.
Polyoxometalates (POMs), a large family of anionic polynuclear metal–oxo clusters, have received considerable research attention due to their structural versatility and diverse physicochemical properties. Lacunary POMs are key building blocks for the syntheses of functional POMs due to their highly active multidentate O-donor sites. In this review, we have addressed the structural diversities of Ti/Zr-substituted POMs based on the polymerization number of POM building blocks and the number of Ti and Zr centers. The synthetic strategies and relevant catalytic applications of some representative Ti/Zr-substituted POMs have been discussed in detail. Finally, the outlook on the future development of this area is also prospected. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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13 pages, 3589 KiB  
Review
Recent Advances of Anderson-Type Polyoxometalates as Catalysts Largely for Oxidative Transformations of Organic Molecules
by Zheyu Wei, Jingjing Wang, Han Yu, Sheng Han and Yongge Wei
Molecules 2022, 27(16), 5212; https://doi.org/10.3390/molecules27165212 - 16 Aug 2022
Cited by 23 | Viewed by 2634
Abstract
Anderson-type ([XM6O24]n−) polyoxometalates (POMs) are a class of polymetallic-oxygen cluster inorganic compounds with special structures and properties. They have been paid extensive attention by researchers now, due to their chemical modification and designability, which have been widely [...] Read more.
Anderson-type ([XM6O24]n−) polyoxometalates (POMs) are a class of polymetallic-oxygen cluster inorganic compounds with special structures and properties. They have been paid extensive attention by researchers now, due to their chemical modification and designability, which have been widely applied in the fields of materials, catalysis and medicine. In contemporary years, the application of Anderson-type POMs in catalytic organic oxidation reaction has gradually shown great significance for the research of green catalytic process. In this paper, we investigate the application of Anderson-type POMs in organic synthesis reaction, and these works are summarized according to the different structure of POMs. This will provide a new strategy for further investigation of the catalytic application of Anderson-type POMs and the study of green catalysis. Full article
(This article belongs to the Special Issue Research on Polyoxometalate Materials)
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