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Polyoxometalate

About: Polyoxometalate is a research topic. Over the lifetime, 3493 publications have been published within this topic receiving 94123 citations. The topic is also known as: POM.


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Journal ArticleDOI
TL;DR: Four 3D POM-based silver coordination polymers, namely, Ag17(ptz)11(PW12O40)2]n (1), [Ag17(PTz) 11(PMo12O 40)2[n (2], [Ag12(ptZ)6(CN)2(SiW 12O40)]n (3), and [Ag19(pttz)8(H2ptz)(H3ptz),
Abstract: Four 3D POM-based silver coordination polymers, namely, [Ag17(ptz)11(PW12O40)2]n (1), [Ag17(ptz)11(PMo12O40)2]n (2), [Ag12(ptz)6(CN)2(SiW12O40)]n (3), and [Ag19(ptz)8(H2ptz)(H3ptz)(AgP5W30O110)·7H2O]n (4), have been obtained by solvothermal reaction of AgNO3 and 5-phenyl-1H-tetrazole (Hptz) ligand in the presence of four types of polyoxometalates. Structural analysis shows that four types of Ag(I)···π interactions, m-η1, m/p-η2, o/m-η2, and o/m/p-η3, were observed in compounds 1–4, depending on the polyoxometalates used. The in situ generated CN– ion in compound 3 shows unprecedented mixed σ and π bonding modes, similar to the C22- ion in well-studied silver acetylides. For 4, the Na+ ion in the Preyssler heteropolyoxoanion, [NaP5W30O110]14-, was exchanged by Ag(I) under solvothermal conditions, generating a novel [AgP5W30O110]14- anion. In addition, the photoluminescence behavior of 1–4 was also investigated.

52 citations

Journal ArticleDOI
TL;DR: In this paper, the main structural feature to these two compounds is the presence of different copper−Phen complex moieties which compose new multinuclear copper−phen complexes linked by a Cu−Cl bond.
Abstract: Two novel hybrid compounds, [Cu2(Phen)4Cl][Cu2(Phen)3(H2O)Cl][P2W18O62]·H2O (1) and [Cu7(Phen)7(H2O)4Cl8] [P2W18O62]·6H2O (2) (Phen = 1,10-phenanthroline), containing multinuclear CuII complex cations, have been obtained in hydrothermal conditions and characterized by IR, elemental, thermogravimetric, magnetic, electrochemical and single-crystal X-ray diffraction analyses. The main structural feature to these two compounds is the presence of different copper−Phen complex moieties which compose new multinuclear copper−Phen complexes linked by a Cu−Cl bond. The binuclear cations [Cu2(Phen)4Cl]3+ and [Cu2(Phen)3(H2O)Cl]3+ of 1 indicate a special chiral arrangement. The 2 contains a heptanuclear copper chain [Cu7(phen)7(H2O)4Cl8]6+ formed by a one-Cl bridge and a two-Cl bridge. Magnetic studies prove that Cu−Cl−Cu angles result in different magnetic behaviors in 1 and 2. Furthermore, a compound 2-modiffied carbon paste electrode (2-CPE) displays good electrocatalytic activity toward the reduction of nitrite.

52 citations

Journal ArticleDOI
TL;DR: In this paper, a sandwich-type polyoxometalate (Co4(H2O)2(PW9O34)2) was immobilized for the first time into the three-dimensional porous metal-organic framework, MIL-101.

52 citations

Journal ArticleDOI
TL;DR: In this article, a 1D chain organic-inorganic polymer H1.5[Sm(H2O)8]0.5 [SmCl3, DMF and α-H6P2W18O62·n H2O with Dawson-type polyoxometalates as building blocks has been synthesized by reaction of SmCl3 and DMF in the mixed solution of acetonitrile and water in the bulk ratio of 1:1.

52 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023246
2022566
2021213
2020218
2019187
2018216