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Matono T, Ueno S, Kato Y, Umehara N, Lang Z, Li Y, Ninomiya W, Elhallal M, Gonzales-Yañez EO, Capron M, Ishikawa S, Ueda W, Sano T, Sadakane M. Preparation and isolation of mono-Nb substituted Keggin-type phosphomolybdic acid and its application as an oxidation catalyst for isobutylaldehyde and Wacker-type oxidation. Dalton Trans 2023. [PMID: 37971057 DOI: 10.1039/d3dt02451b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
The potassium and proton mixed salt of mono-Nb substituted Keggin-type phosphomolybdate, KH3[PMo11NbO40], was isolated in a pure form by reacting Keggin-type phosphomolybdic acid (H3[PMo12O40]) and potassium hexaniobate (K8Nb6O19) in water, followed by freeze-drying. The all protonic form, H4[PMo11NbO40], was isolated via proton exchange with H-resin and subsequent freeze-drying. The most crucial factor to isolate KH3[PMo11NbO40] and H4[PMo11NbO40] in pure forms is the evaporation of water using the freeze-drying method. Using a similar procedure, the potassium salt of the di-Nb substituted compound K5[PMo10Nb2O40] was isolated. H4[PMo11NbO40] exhibited high catalytic activity for oxidizing isobutylaldehyde to methacrolein and moderate catalytic activity for the Wacker-type oxidation of allyl phenyl ether when combined with Pd(OAc)2.
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Affiliation(s)
- Takashi Matono
- Department of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, 739-8527, Japan.
| | - Shinsuke Ueno
- Department of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, 739-8527, Japan.
| | - Yuki Kato
- MMA R&D Center, Mitsubishi Chemical Corporation, 20-1, Miyuki-cho, Ootake, Hiroshima 739-0693, Japan
| | - Naoya Umehara
- Department of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, 739-8527, Japan.
| | - Zhongling Lang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yangguang Li
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Wataru Ninomiya
- MMA R&D Center, Mitsubishi Chemical Corporation, 20-1, Miyuki-cho, Ootake, Hiroshima 739-0693, Japan
| | - Maher Elhallal
- Université de Lille, CNRS, Centrale Lille, ENSCL, Université Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Edgar Osiris Gonzales-Yañez
- Université de Lille, CNRS, Centrale Lille, ENSCL, Université Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Mickael Capron
- Université de Lille, CNRS, Centrale Lille, ENSCL, Université Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Satoshi Ishikawa
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27, Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Wataru Ueda
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27, Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Tsuneji Sano
- Department of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, 739-8527, Japan.
| | - Masahiro Sadakane
- Department of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, 739-8527, Japan.
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2
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Auvray T, Nachtigall O, Brennessel WW, Jones WD, Matson EM. Development of sterically hindered siloxide-functionalized polyoxotungstates for the complexation of 5d-metals. Dalton Trans 2021; 50:4300-4310. [PMID: 33688900 DOI: 10.1039/d1dt00256b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we extend the family of organosilyl-functionalized trivacant Keggin polyoxotungstates, [PW9O34(RSiOH)3]3- (R = nPr, iPr, tBu), through the introduction of bulky aryl and aliphatic silanol substituents, namely phenyl, cyclohexyl and biphenyl. This work was performed in order to study the impact of these large functional groups on the accessibility of the well-defined tridentate coordination site. Coordination of hafnium to these type II hybrid polyoxotungstates was conducted in order to study the ability of the bulkier ligand pockets to support larger cations in comparison to those previously reported (e.g. Ti4+, V3+, V5+, Ge4+). Increased steric hindrance around the coordination site from the biphenyl groups resulted in much longer reaction times for the complexation reaction compared to the other functional groups used, but the impact of our design toward stabilizing reactive species proved limited, as all complexes easily undergo hydrolysis of the Hf-OtBu bond in the presence of water. Electrochemical investigations of the ligands and hafnium complexes reveal that the redox events centered on the polyoxotungstate core can be tuned by varying the substituents on the silyl fragment, and exhibit a cathodic shift after coordination of the redox inactive tetravalent cation.
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Affiliation(s)
- Thomas Auvray
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA.
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Shmakova AA, Berezin AS, Abramov PA, Sokolov MN. Self-Assembly of Ag +/[PW 11NbO 40] 4- Complexes in Nonaqueous Solutions. Inorg Chem 2020; 59:1853-1862. [PMID: 31967809 DOI: 10.1021/acs.inorgchem.9b03064] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Self-assembly between Ag+ and [PW11NbO40]4- in N- and O-donor solvents (nitriles and amides) has been studied. In the case of dimethylformamide (DMF), formation of a yellow [Ag4(DMF)12][PW11NbO40] (1a) metastable phase and a colorless [Ag4(DMF)10][PW11NbO40] (1) stable phase was observed. In acetonitrile (CH3CN), the product was [Ag(CH3CN)4]2{[Ag(CH3CN)3]2[PW11NbO40]} (2a). By contrast, [SiW12O40]4- of the same size and charge as [PW11NbO40]4- produces [Ag(CH3CN)3]4[SiW12O40] (3a). Partial desolvation of 2a and 3a leads to Ag4[PW11NbO40]·7.5CH3CN (2) and Ag4[SiW12O40]·7.5CH3CN (3), respectively. The CH3CN molecules in the structure of 2 are labile, and this compound was used as the starting material to study solvent-exchange processes in N-methyl-2-pyrrolidone (NMP), dimethylacetamide (DMA), diethylformamide (DEF), and benzonitrile (PhCN) solutions. These solvent reactions yield [Ag(DMA)4][Ag3(DMA)6][PW11NbO40] (4), [Ag2(NMP)4(CH3CN)]2[PW11NbO40]·1.3NMP (5a), [Ag2(NMP)5]2[PW11NbO40] (5b), Ag4[PW11NbO40]·9.5DEF (6), and [Ag(PhCN)4]2[{Ag(PhCN)3}2PW11NbO40] (7). All products were isolated and characterized by single-crystal X-ray diffraction (except for 2 and 3), IR, elemental analysis, and thermogravimetric analysis techniques. The O-donor solvents favor polynuclear, solvent-bridged cationic aggregates. In the case of DMF, DMA, and DEF discrete, tri- and tetranuclear polycations are observed, while in the case of NMP, the formation of infinite polycationic structures takes place. By contrast, the N-donor solvents (CH3CN and PhCN) favor mononuclear cations, which can exist either as distorted tetrahedral, isolated [Ag(Solv)4]+ cations or as pseudotriangular {Ag(Solv)3}+ units, additionally coordinated to a polyoxometalate. Screening of the luminescent properties for solid samples of 1-7 revealed that only 5a/5b and 7 are emissive. In particular, the sample containing 5a and 5b demonstrates long-lived phosphorescence with a 30 ms lifetime.
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Affiliation(s)
- Alexandra A Shmakova
- Nikolaev Institute of Inorganic Chemistry , 3 Akad. Lavrentiev Avenue , 630090 Novosibirsk , Russia
| | - Alexey S Berezin
- Nikolaev Institute of Inorganic Chemistry , 3 Akad. Lavrentiev Avenue , 630090 Novosibirsk , Russia
| | - Pavel A Abramov
- Nikolaev Institute of Inorganic Chemistry , 3 Akad. Lavrentiev Avenue , 630090 Novosibirsk , Russia.,South Ural State University , Prospekt Lenina 76 , 454080 Chelyabinsk , Russia
| | - Maxim N Sokolov
- Nikolaev Institute of Inorganic Chemistry , 3 Akad. Lavrentiev Avenue , 630090 Novosibirsk , Russia.,Novosibirsk State University , 2 Pirogova strasse , 630090 Novosibirsk , Russia
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4
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Singh V, Liu S, Ma P, Drew MGB, Wang J, Niu J. Versatile {Cp2Ti} Grafted Hetero-Polyoxotungstate Clusters: Synthesis, Crystal Structure, and Photocurrent Properties. Inorg Chem 2020; 59:1125-1136. [DOI: 10.1021/acs.inorgchem.9b02743] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vikram Singh
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Shuang Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 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, Henan 475004, P.R. China
| | - Michael G. B. Drew
- Department of Chemistry, University of Reading, White Knights, Reading RG6 6AD, U.K
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 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, Henan 475004, P.R. China
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5
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Wakizaka M, Imaoka T, Yamamoto K. Composition-defined nanosized assemblies that contain heterometallic early 4d/5d-transition-metals. Dalton Trans 2019; 48:14261-14268. [PMID: 31408064 DOI: 10.1039/c9dt03094h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The controlled assembly of early transition metals remains a challenging research target, especially with respect to the generation of heterometallic molecules and nanomaterials. In this study, metal chlorides of the early 4d/5d-transition-metals, i.e., ZrCl4, NbCl5, MoCl5, HfCl4, TaCl5, and WCl6, were stoichiometrically introduced into a tetraphenylmethane-core dendritic-phenylazomethine generation 4 dendrimer in the presence of an optimal amount of organic ligands such as pyridine and 3-chloropyridine. The coordinative interactions between the metal chlorides and the imines in the dendrimers indicated a positive correlation for the Lewis acidity of the metals. Moreover, it was clearly demonstrated for the first time that heterometallic assemblies of defined composition contain four kinds of early 4d/5d-transition-metals, such as TaV, NbV, MoV, and ZrIV, which was confirmed by UV-vis titration, XPS, and HAADF-STEM/EDS measurements. The results of this study should provide access to new routes to produce nanomaterials composed of heterometallic early 4d/5d-transition metals.
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Affiliation(s)
- Masanori Wakizaka
- Laboratory for Chemistry and Life Science Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan.
| | - Takane Imaoka
- Laboratory for Chemistry and Life Science Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan.
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan.
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6
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Ni ZH, Li HL, Li XY, Yang GY. Zr4-Substituted polyoxometalate dimers decorated by d-tartaric acid/glycolic acid: syntheses, structures and optical/electrochemical properties. CrystEngComm 2019. [DOI: 10.1039/c8ce01936c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two Zr4-sandwiched Keggin polyoxometalates functionalized by chiral d-tartaric acid and glycolic acid were hydrothermally synthesized and structurally characterized. Their optical and electrochemical properties have been investigated in detail.
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Affiliation(s)
- Zhi-Hui Ni
- MOE Key Laboratory of Cluster Science
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Hai-Lou Li
- MOE Key Laboratory of Cluster Science
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Xu-Yan Li
- MOE Key Laboratory of Cluster Science
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Guo-Yu Yang
- MOE Key Laboratory of Cluster Science
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
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8
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Shmakova AA, Akhmetova MM, Volchek VV, Romanova TE, Korolkov I, Sheven DG, Adonin SA, Abramov PA, Sokolov MN. A HPLC-ICP-AES technique for the screening of [XW11NbO40]n− aqueous solutions. NEW J CHEM 2018. [DOI: 10.1039/c7nj04702a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this research combined HPLC-ICP-AES technique was used to study formation of mixed [XW11O40]n− (X = P, Ge, B) complexes.
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Affiliation(s)
- Alexandra A. Shmakova
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Maria M. Akhmetova
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Victoria V. Volchek
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Tamara E. Romanova
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Ilya Korolkov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Dmitri G. Sheven
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
| | - Sergey A. Adonin
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Pavel A. Abramov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Maxim N. Sokolov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
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Organozirconium Complex with Keggin-Type Mono-Aluminum-Substituted Silicotungstate: Synthesis, Molecular Structure, and Catalytic Performance for Meerwein–Ponndorf–Verley Reduction. Catal Letters 2016. [DOI: 10.1007/s10562-016-1813-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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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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Nomiya K, Ohta K, Sakai Y, Hosoya TA, Ohtake A, Takakura A, Matsunaga S. Tetranuclear Hafnium(IV) and Zirconium(IV) Cationic Complexes Sandwiched between Two Di-Lacunary Species of α-Keggin Polyoxometalates: Lewis Acid Catalysis of the Mukaiyama–Aldol Reaction. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2013. [DOI: 10.1246/bcsj.20130016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kenji Nomiya
- Department of Chemistry, (formerly Department of Materials Science), Faculty of Science, Kanagawa University
| | - Kazuaki Ohta
- Department of Chemistry, (formerly Department of Materials Science), Faculty of Science, Kanagawa University
| | - Yoshitaka Sakai
- Department of Chemistry, (formerly Department of Materials Science), Faculty of Science, Kanagawa University
| | - Taka-aki Hosoya
- Department of Chemistry, (formerly Department of Materials Science), Faculty of Science, Kanagawa University
| | - Atsushi Ohtake
- Department of Chemistry, (formerly Department of Materials Science), Faculty of Science, Kanagawa University
| | - Akira Takakura
- Department of Chemistry, (formerly Department of Materials Science), Faculty of Science, Kanagawa University
| | - Satoshi Matsunaga
- Department of Chemistry, (formerly Department of Materials Science), Faculty of Science, Kanagawa University
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12
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Osada H, Ishikawa A, Saku Y, Sakai Y, Matsuki Y, Matsunaga S, Nomiya K. 2:2-Type complexes of zirconium(IV)/hafnium(IV) centers with mono-lacunary Keggin polyoxometalates: Syntheses and molecular structures of [(α-SiW11O39M)2(μ-OH)2]10− (M=Zr, Hf) with edge-sharing octahedral units and [(α-SiW11O39M)2(μ-OH)3]11− with face-sharing octahedral units. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.08.062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Kato CN, Makino Y, Unno W, Uno H. Synthesis, molecular structure, and stability of a zirconocene derivative with α-Keggin mono-aluminum-substituted polyoxotungstate. Dalton Trans 2013; 42:1129-35. [DOI: 10.1039/c2dt32107f] [Citation(s) in RCA: 14] [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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14
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Li SJ, Liu SX, Ma NN, Qiu YQ, Miao J, Li CC, Tang Q, Xu L. Constructing nanosized polyanions with diverse structures by the self-assembly of W/Nb mixed-addendum polyoxometalate and lanthanide ion. CrystEngComm 2012. [DOI: 10.1039/c1ce06225e] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Zhang W, Liu S, Zhang C, Tan R, Ma F, Li S, Zhang Y. An Acetate‐Functionalized Tetranuclear Zirconium Sandwiching Polyoxometalate Complex. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wei Zhang
- Key Laboratory of Polyoxometalates Science of Ministry of Education, College of Chemistry, Northeast Normal University, Changchun City, JiLin 130024, P. R. China, Fax: +86‐43185099328
| | - Shu‐Xia Liu
- Key Laboratory of Polyoxometalates Science of Ministry of Education, College of Chemistry, Northeast Normal University, Changchun City, JiLin 130024, P. R. China, Fax: +86‐43185099328
| | - Chun‐Dan Zhang
- Key Laboratory of Polyoxometalates Science of Ministry of Education, College of Chemistry, Northeast Normal University, Changchun City, JiLin 130024, P. R. China, Fax: +86‐43185099328
| | - Rui‐Kang Tan
- Key Laboratory of Polyoxometalates Science of Ministry of Education, College of Chemistry, Northeast Normal University, Changchun City, JiLin 130024, P. R. China, Fax: +86‐43185099328
| | - Feng‐Ji Ma
- Key Laboratory of Polyoxometalates Science of Ministry of Education, College of Chemistry, Northeast Normal University, Changchun City, JiLin 130024, P. R. China, Fax: +86‐43185099328
| | - Shu‐Jun Li
- Key Laboratory of Polyoxometalates Science of Ministry of Education, College of Chemistry, Northeast Normal University, Changchun City, JiLin 130024, P. R. China, Fax: +86‐43185099328
| | - Yuan‐Yuan Zhang
- Key Laboratory of Polyoxometalates Science of Ministry of Education, College of Chemistry, Northeast Normal University, Changchun City, JiLin 130024, P. R. China, Fax: +86‐43185099328
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16
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Sokolov MN, Izarova NV, Peresypkina EV, Virovets AV, Fedin VP. Synthesis and structures of dinuclear ZrIV and HfIV hydroxo complexes with the monolacunar Keggin and Dawson anions. Russ Chem Bull 2010. [DOI: 10.1007/s11172-009-0048-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Relation among the 2:2-, 1:1- and 1:2-type complexes of hafnium(IV)/zirconium(IV) with mono-lacunary α2-Dawson polyoxometalate ligands: Synthesis and structure of the 2:2-type complexes [{α2-P2W17O61M(μ-OH)(H2O)}2]14− (M=Hf, Zr). Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.12.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Mal SS, Nsouli NH, Carraro M, Sartorel A, Scorrano G, Oelrich H, Walder L, Bonchio M, Kortz U. Peroxo-Zr/Hf-Containing Undecatungstosilicates and -Germanates. Inorg Chem 2009; 49:7-9. [DOI: 10.1021/ic902203p] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sib Sankar Mal
- School of Engineering and Science, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Nadeen H. Nsouli
- School of Engineering and Science, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Mauro Carraro
- Department of Chemical Sciences, ITM-CNR, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Andrea Sartorel
- Department of Chemical Sciences, ITM-CNR, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Gianfranco Scorrano
- Department of Chemical Sciences, ITM-CNR, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Holger Oelrich
- Institute of Chemistry, University of Osnabrück, Barbarastrasse 7, 49069 Osnabrück, Germany
| | - Lorenz Walder
- Institute of Chemistry, University of Osnabrück, Barbarastrasse 7, 49069 Osnabrück, Germany
| | - Marcella Bonchio
- Department of Chemical Sciences, ITM-CNR, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Ulrich Kortz
- School of Engineering and Science, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
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19
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Sokolov MN, Izarova NV, Peresypkina EV, Mainichev DA, Fedin VP. Zirconium and hafnium aqua complexes [(H2O)3M(P2W17O61)]6−: Synthesis, characterization and substitution of water by chiral ligand. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.04.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Luo Z, Kögerler P, Cao R, Hill CL. Synthesis, Structure, and Magnetism of a Polyoxometalate with Coordinatively Unsaturated d-Electron-Transition Metal Centers. Inorg Chem 2009; 48:7812-7. [DOI: 10.1021/ic9007729] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhen Luo
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Paul Kögerler
- Institut für Anorganische Chemie, RWTH Aachen University, 52074 Aachen, Germany
| | - Rui Cao
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Craig L. Hill
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
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21
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Saku Y, Sakai Y, Shinohara A, Hayashi K, Yoshida S, Kato CN, Yoza K, Nomiya K. Sandwich-type HfIVand ZrIVcomplexes composed of tri-lacunary Keggin polyoxometalates: structure of [M3(μ-OH)3(A-α-PW9O34)2]9−(M = Hf and Zr). Dalton Trans 2009:805-13. [DOI: 10.1039/b813710m] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Nomiya K, Saku Y, Yamada S, Takahashi W, Sekiya H, Shinohara A, Ishimaru M, Sakai Y. Synthesis and structure of dinuclear hafnium(IV) and zirconium(IV) complexes sandwiched between 2 mono-lacunary α-Keggin polyoxometalates. Dalton Trans 2009:5504-11. [DOI: 10.1039/b902296a] [Citation(s) in RCA: 34] [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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23
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Bannani F, Thouvenot R, Debbabi M. Synthesis and Characterization of New Organosilyl Derivatives of Polyoxometalates (nBu4N)2[NbW5O19SiRR′2] (R = R′ = Et,iPr, OtBu, Ph;R =tBu and R′ = Me) – X-ray Crystal Structure of (nBu4N)2[NbW5O19SiPh3]. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700357] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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López X, Weinstock IA, Bo C, Sarasa JP, Poblet JM. Structural evolution in polyoxometalates: a DFT study of dimerization processes in Lindqvist and Keggin cluster anions. Inorg Chem 2007; 45:6467-73. [PMID: 16878960 DOI: 10.1021/ic060112c] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Density functional theory (DFT) calculations are used to investigate dimerization, by acid condensation, between Lindvist and Keggin cluster anions. When specific addendum atoms are present (notably, Ti, V, Nb, and Cr), these clusters dimerize in the presence of acid via the formation of mu-O linkages. These processes may be viewed as molecular models for the formation of metal-oxygen bonds in the active sites of metalloenzymes, or in materials chemistry, and we here provide detailed information concerning these reactions. For this, DFT calculations are used to provide insight into the mechanism(s) associated with dimerization of Lindqvist clusters, W5MO19(n-) (M = W, Mo, V, Nb, and Ti) in acidic media. In full accord with experimental data, our calculations show that dimerization of Nb and Ti derivatives is thermodynamically favored and that this is not the case for dimerization between Mo, V, and W addendum atoms. In addition, dimerization of PW11TiO40(5-) and SiW11NbO40(5-) to give the corresponding dimers was also calculated to be exothermic. Two possible mechanisms, involved in two competing pathways, are evaluated and discussed. Conclusions are presented concerning the role played by the nature of the metal atoms taking part in M-mu-O-M bond formation. A correlation is established between the relative strengths of specific terminal M=O bonds in monomeric precursors and the tendency of these to form M-mu-O-M bonds.
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Affiliation(s)
- Xavier López
- Laboratoire de Chimie Quantique, UMR 7551, CNRS, and Université Louis Pasteur, 4 rue Blaise Pascal, F-67000 Strasbourg, France
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25
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26
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Kato CN, Shinohara A, Hayashi K, Nomiya K. Syntheses and X-ray Crystal Structures of Zirconium(IV) and Hafnium(IV) Complexes Containing Monovacant Wells−Dawson and Keggin Polyoxotungstates. Inorg Chem 2006; 45:8108-19. [PMID: 16999408 DOI: 10.1021/ic060656e] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The syntheses and crystal structures of a series of zirconium(IV) and hafnium(IV) complexes with Dawson monovacant phosphotungstate [alpha2-P2W17O61](10-) and in situ-generated Keggin monovacant phosphotungstate [alpha-PW11O39](7-), which was obtained by a reaction of [alpha-PW12O40](3-) with Na2CO3, are described. K15H[Zr(alpha2-P2W17O61)2].25H2O (K-1), K16[Hf(alpha2-P2W17O61)2].19H2O (K-2), (Et2NH2)10[Zr(alpha-PW11O39)2].7H2O (Et2NH2-3), and (Et2NH2)10[Hf(alpha-PW11O39)2].2H2O (Et2NH2-4), being afforded by reactions in aqueous solutions of monolacunary Dawson and Keggin polyoxotungstates with ZrCl2O.8H2O and HfCl2O.8H2O followed by exchanging countercations, were obtained as analytically pure, homogeneous colorless crystals. Single-crystal X-ray structure analyses revealed that the Zr(IV) and Hf(IV) ions are in a square antiprismatic coordination environment with eight oxygen atoms, four of them being provided from each of the two monovacant polyanion ligands. Although the total molecular shapes and the 8-coordinate zirconium and hafnium centers of complexes 1-4 are identical, the bonding modes (bond lengths and bond angles) around the zirconium(IV) and hafnium(IV) centers were dependent on the monovacant structures of the polyanion ligands. Additionally, the characterization of complexes 1-4 was accomplished by elemental analysis, TG/DTA, FTIR, and solution (31P and 183W) NMR spectroscopy.
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Affiliation(s)
- Chika Nozaki Kato
- Department of Materials Science, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa 259-1293, Japan
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27
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Gaunt AJ, May I, Collison D, Fox OD. A novel zirconium polyoxometalate complex that contains both a coordinated saturated anion, [PMo12O40]3-, and a coordinated unsaturated anion, [PMo11O39]7-. Inorg Chem 2003; 42:5049-51. [PMID: 12924875 DOI: 10.1021/ic034273h] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The novel 8-coordinate zirconium compound (NH(4))(6)[Zr(PMo(12)O(40))(PMo(11)O(39))].26H(2)O (1) has been synthesized and characterized by single-crystal X-ray diffraction, elemental analysis, and vibrational and (31)P NMR spectroscopy. It is the first example of a metal complex containing both parent, [PMo(12)O(40)](3)(-), and monovacant lacunary, [PMo(11)O(39)](7)(-), anions. Furthermore, this is the first crystallographic determination of the [PMo(11)O(39)](7)(-) anion.
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Affiliation(s)
- Andrew J Gaunt
- Centre for Radiochemistry Research, Department of Chemistry, The University of Manchester, Manchester M13 9PL, U.K
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28
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Gaunt AJ, May I, Collison D, Travis Holman K, Pope MT. Polyoxometal cations within polyoxometalate anions. Seven-coordinate uranium and zirconium heteroatom groups in [(UO2)12(μ3-O)4(μ2-H2O)12(P2W15O56)4]32− and [Zr4(μ3-O)2(μ2-OH)2(H2O)4 (P2W16O59)2]14−. J Mol Struct 2003. [DOI: 10.1016/s0022-2860(03)00272-2] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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