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Sun Y, Li H, Zou Y, Ma P, Niu J, Wang J. A Hexameric Ruthenium(III)-Containing Tungstoantimonate with Good Proton Conductivity Performance. Inorg Chem 2023; 62:14142-14146. [PMID: 37603397 DOI: 10.1021/acs.inorgchem.3c01342] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
A novel Ru(III)-containing tungstoantimonate Na16H22[(B-β-SbW9O33)6(W3RuO7)2(W4O11)]·118H2O (1) hexamer was successfully synthesized using the hydrothermal synthesis method. Analysis by single-crystal X-ray diffraction revealed that the polyanion comprises six trivacant Keggin-type [B-β-SbW9O33]9- units interconnected by six {WO6} and six Ru/W disorder octahedra, resulting in an intriguing cyclohexane boat-like conformation. Compound 1 exhibits favorable proton conductivity, with a measured conductivity (σ) of 5.41 × 10-3 S cm-1 at 333 K and 55% relative humidity (RH). The activation energy (Ea) of compound 1 was determined to be 0.40 eV, providing evidence that its proton conductivity conforms to the Grotthus mechanism.
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Affiliation(s)
- Yahao Sun
- 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
| | - Yan Zou
- 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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Wang Y, Xin X, Feng Y, Chi M, Wang R, Liu T, Lv H. Structurally-New Hexadecanuclear Ni-Containing Silicotungstate with Catalytic Hydrogen Generation Activity. Molecules 2023; 28:molecules28052017. [PMID: 36903264 PMCID: PMC10004391 DOI: 10.3390/molecules28052017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 02/24/2023] Open
Abstract
A structurally-new, carbon-free hexadecanuclear Ni-containing silicotungstate, [Ni16(H2O)15(OH)9(PO4)4(SiW9O34)3]19-, has been facilely synthesized using a one-pot, solution-based synthetic method systematically characterized by single-crystal X-ray diffraction and several other techniques. The resulting complex works as a noble-metal-free catalyst for visible-light-driven catalytic generation of hydrogen, by coupling with a [Ir(coumarin)2(dtbbpy)][PF6] photosensitizer and a triethanolamine (TEOA) sacrificial electron donor. Under minimally optimized conditions, a turnover number (TON) of 842 was achieved for TBA-Ni16P4(SiW9)3-catalyzed hydrogen evolution system. The structural stability of TBA-Ni16P4(SiW9)3 catalyst under photocatalytic conditions was evaluated by the mercury-poisoning test, FT-IR, and DLS measurements. The photocatalytic mechanism was elucidated by both time-solved luminescence decay and static emission quenching measurements.
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Mulkapuri S, Ravi A, Nasani R, Kurapati SK, Das SK. Barrel-Shaped-Polyoxometalates Exhibiting Electrocatalytic Water Reduction at Neutral pH: A Synergy Effect. Inorg Chem 2022; 61:13868-13882. [PMID: 36006778 DOI: 10.1021/acs.inorgchem.2c01811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two copper-based barrel-shaped polyoxometalates (POMs), namely, [{H3O}4{Na6(H2O)22}][{CuI (H2O)3}2{CuII (H2O)}3{B-α-BiIIIWVI9O33}2]·7H2O (NaCu-POM) and Li4[{NH4}2{H3O}3{Li(H2O)5}][{CuII(SH)}{(CuIICuI1.5)(B-α-BiIIIWVI9O33)}2]·9H2O (LiCu-POM) have been synthesized and structurally characterized. The single-crystal X-ray diffraction analyses of NaCu-POM and LiCu-POM reveal the presence of penta- and hexa-nuclear copper wheels per formula units, respectively; these copper wheels are sandwiched between two lacunary Keggin anions {B-α-BiIIIWVI9O33}9- (BiW9) to form the barrel-shaped title POM compounds. In both the compounds NaCu-POM and LiCu-POM, the mixed-valent copper centers are present in their respective penta- and hexa-nuclear copper wheels, established by X-ray photoelectron spectroscopy (XPS) as well as by bond valence sum (BVS) calculations. Compound LiCu-POM additionally shows the presence of a sulfhydryl ligand (SH-), coordinated to one of the copper centers of its {Cu6}-wheel, that is expected to be generated from the in situ reduction of sulfate anion present in the concerned reaction mixture (lithium-ion in ammonia solution may be the reducing agent). Interestingly, the title compounds, NaCu-POM and LiCu-POM exhibit an efficient electrocatalytic hydrogen evolution reaction (HER) by reducing water at neutral pH. Detailed electrochemical studies including controlled experiments indicate that the active sites for this electrocatalysis are the W(VI) centers of the title compounds, not the copper centers. However, a relevant tri-lacunary Keggin cluster anion {PVWVI9O33}7- (devoid of copper ion) does not show comparable HER as shown by the title compounds. The intra-cluster cooperative interactions of the mixed-valent copper centers (CuII/CuI) with the tungsten centers (W6+) make the overall system electrocatalytically active toward water reduction to molecular hydrogen at neutral pH. High Faradaic efficiencies (89 and 92%) and turnover frequencies (1.598 s-1 and 1.117 s-1) make the title compounds NaCu-POM and LiCu-POM efficient catalysts toward electrochemical water reduction to molecular hydrogen.
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Affiliation(s)
- Sateesh Mulkapuri
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
| | - Athira Ravi
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
| | - Rajendar Nasani
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
| | - Sathish Kumar Kurapati
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India.,Department of Chemistry, Chaitanya Bharathi Institute of Technology Hyderabad, Gandipet, Hyderabad 500075, India
| | - Samar K Das
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
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Gupta R, Khan I, Hussain F, Bossoh AM, Mbomekallé IM, de Oliveira P, Sadakane M, Kato C, Ichihashi K, Inoue K, Nishihara S. Two New Sandwich-Type Manganese {Mn5}-Substituted Polyoxotungstates: Syntheses, Crystal Structures, Electrochemistry, and Magnetic Properties. Inorg Chem 2017; 56:8759-8767. [DOI: 10.1021/acs.inorgchem.6b02994] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Rakesh Gupta
- Department of Chemistry, University of Delhi, North Campus, 110007 Delhi, India
| | - Imran Khan
- Department of Chemistry, University of Delhi, North Campus, 110007 Delhi, India
| | - Firasat Hussain
- Department of Chemistry, University of Delhi, North Campus, 110007 Delhi, India
| | - A. Martin Bossoh
- Laboratoire de Chimie
Physique, UMR 8000, CNRS, Université Paris-Sud, Orsay F-91405, France
- Université Félix Houphouët-Boigny, 01 BP V34 Abidjan 01, Ivory Coast
| | - Israël M. Mbomekallé
- Laboratoire de Chimie
Physique, UMR 8000, CNRS, Université Paris-Sud, Orsay F-91405, France
| | - Pedro de Oliveira
- Laboratoire de Chimie
Physique, UMR 8000, CNRS, Université Paris-Sud, Orsay F-91405, France
| | - Masahiro Sadakane
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi, Hiroshima 732-8527, Japan
| | - Chisato Kato
- Graduate School of Science & Center for Chiral Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi, Hiroshima 732-8526, Japan
| | - Katsuya Ichihashi
- Graduate School of Science & Center for Chiral Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi, Hiroshima 732-8526, Japan
| | - Katsuya Inoue
- Graduate School of Science & Center for Chiral Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi, Hiroshima 732-8526, Japan
| | - Sadafumi Nishihara
- Graduate School of Science & Center for Chiral Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi, Hiroshima 732-8526, Japan
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[{Ni4
(OH)3
AsO4
}4
(B
-α-PW9
O34
)4
]28−
: A New Polyoxometalate Structural Family with Catalytic Hydrogen Evolution Activity. Chemistry 2015; 21:17363-70. [DOI: 10.1002/chem.201503010] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Indexed: 11/07/2022]
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Self assembly of sandwich-layered 2D silver(I) coordination polymers stabilized by argentophilic interactions: Synthesis, crystal structures and ab initio intramolecular energetics. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.08.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Systematic assembly of {LnMnIII4} appended cubanes with inorganic polyoxometalate ligands and their electrocatalytic property. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.05.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Li J, Cheng YM, Ma PT, Wang JP. Synthesis and characterization of hybrid organic-inorganic, dimeric tungstoantimonate, {[Cu(En)2(H2O)]2[Cu4Na2(H2O)2(OH)2](α-SbW9O33)2}6−1. RUSS J INORG CHEM+ 2012. [DOI: 10.1134/s0036023612060162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Goldberg H, Kumar D, Sastry GN, Leitus G, Neumann R. An antimony(V) substituted Keggin heteropolyacid, H4PSbMo11O40: Why is its catalytic activity in oxidation reactions so different from that of H4PVMo11O40? ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcata.2011.12.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Han Z, Zhang Q, Gao Y, Wu J, Zhai X. Novel hexagonal {VO}6-containing sandwich-type cluster accompanied by in situcarbon–carbon bond formation of organic cations. Dalton Trans 2012; 41:1332-7. [DOI: 10.1039/c1dt11527h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Oms O, Dolbecq A, Mialane P. Diversity in structures and properties of 3d-incorporating polyoxotungstates. Chem Soc Rev 2012; 41:7497-536. [DOI: 10.1039/c2cs35148j] [Citation(s) in RCA: 272] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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From molecular to coordination complex: Two new supramolecular networks involving 4,4′-bipy, aminosalicylic acid and Co(II) ions. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.02.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chen BW, Chen WL, Li YG, Wang EB. Two New Extended Frameworks Constructed from the Sandwiching Polytungstoantimonate Clusters. J CLUST SCI 2011. [DOI: 10.1007/s10876-011-0360-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Reinoso S. Heterometallic 3d–4f polyoxometalates: still an incipient field. Dalton Trans 2011; 40:6610-5. [DOI: 10.1039/c1dt10174a] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhang YY, Liu SX, Yu CJ, Tang Q, Liang DD, Zhang CD, Ma FJ, Li SJ, Zhang W, Tan RK. A new Dawson-like tungstoantimonate related to [SbVW18O60(OH)2]9−. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2010.08.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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