Hydrothermal synthesis of polyoxotungstate clusters, surface-modified with M(II)-organonitrogen subunits

R. Nandini Devi; Eric Burkholder; Jon Zubieta

doi:10.1016/S0020-1693(02)01472-X

Hydrothermal synthesis of polyoxotungstate clusters, surface-modified with M(II)-organonitrogen subunits

R. Nandini Devi, Eric Burkholder, Jon Zubieta

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

93 Scopus citations

Abstract

The hydrothermal reactions of Na₂WO₄·2H₂O with secondary metal cation sources in the presence of an appropriate organonitrogen donor yield a series of molecular clusters. The compounds [Ni(bpy)₃]_1.5[Ni(bpy)₂(H₂O){H ₃W₁₂O₄₀}]·0.5H₂O (1·0.5H₂O), [{Ni(phen)₂(H₂O)}₂{H₄W ₁₂O₄₀}]·4H₂O (2.4H₂O) and [{Cu(phen)₂}₄{H₂W₁₂O ₄₀}] [{Cu(phen)₂}₂{H₂W₁₂O ₄₀}]·3H₂O (4.3H₂O) are constructed from the α-metatungstate cluster [H₂W₁₂O₄₀]^6- core, covalently linked through oxo-bridges to secondary metal-organonitrogen ligand subunits. In the case of 1, the tungstate cluster is decorated by a single {Ni(bpy)₂(H₂O)}²⁺ subunit yielding an anionic bimetallic cluster, while in 2, two {Ni(phen)₂(H₂O)}²⁺ moieties are linked to the tungstate core to form a neutral bimetallic cluster. It is noteworthy that 4 is constructed of a cationic cluster, exhibiting a central tungstate core linked to four {Cu(phen)₂}²⁺ units, and an anionic bimetallic polyoxoanion, featuring a tungstate core bonded to two {Cu(phen)₂}²⁺ moieties. Compound 3, [{Cu(bpy)₂}₂W₁₀O₃₂]·2H ₂O (3.2H₂O) consists of two {Cu(bpy)₂}²⁺ subunits linked to the opposite sides of a decatungstate cluster, while compound 5 contains {Co(bpy)₃}³⁺ cations and the common Keggin anion, [CoW₁₂O₄₀]^6-.

Original language	English (US)
Pages (from-to)	150-156
Number of pages	7
Journal	Inorganica Chimica Acta
Volume	348
DOIs	https://doi.org/10.1016/S0020-1693(02)01472-X
State	Published - May 15 2003

Keywords

Bimetallic oxide clusters
Copper tungstate
Hydrothermal synthesis
Nickel tungstate
Polyoxotungstates

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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@article{e17bb1d5b9104f5cb4e5c4b52dfc5206,

title = "Hydrothermal synthesis of polyoxotungstate clusters, surface-modified with M(II)-organonitrogen subunits",

abstract = "The hydrothermal reactions of Na2WO4·2H2O with secondary metal cation sources in the presence of an appropriate organonitrogen donor yield a series of molecular clusters. The compounds [Ni(bpy)3]1.5[Ni(bpy)2(H2O){H 3W12O40}]·0.5H2O (1·0.5H2O), [{Ni(phen)2(H2O)}2{H4W 12O40}]·4H2O (2.4H2O) and [{Cu(phen)2}4{H2W12O 40}] [{Cu(phen)2}2{H2W12O 40}]·3H2O (4.3H2O) are constructed from the α-metatungstate cluster [H2W12O40]6- core, covalently linked through oxo-bridges to secondary metal-organonitrogen ligand subunits. In the case of 1, the tungstate cluster is decorated by a single {Ni(bpy)2(H2O)}2+ subunit yielding an anionic bimetallic cluster, while in 2, two {Ni(phen)2(H2O)}2+ moieties are linked to the tungstate core to form a neutral bimetallic cluster. It is noteworthy that 4 is constructed of a cationic cluster, exhibiting a central tungstate core linked to four {Cu(phen)2}2+ units, and an anionic bimetallic polyoxoanion, featuring a tungstate core bonded to two {Cu(phen)2}2+ moieties. Compound 3, [{Cu(bpy)2}2W10O32]·2H 2O (3.2H2O) consists of two {Cu(bpy)2}2+ subunits linked to the opposite sides of a decatungstate cluster, while compound 5 contains {Co(bpy)3}3+ cations and the common Keggin anion, [CoW12O40]6-.",

keywords = "Bimetallic oxide clusters, Copper tungstate, Hydrothermal synthesis, Nickel tungstate, Polyoxotungstates",

author = "Devi, {R. Nandini} and Eric Burkholder and Jon Zubieta",

year = "2003",

month = may,

day = "15",

doi = "10.1016/S0020-1693(02)01472-X",

language = "English (US)",

volume = "348",

pages = "150--156",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier",

}

TY - JOUR

T1 - Hydrothermal synthesis of polyoxotungstate clusters, surface-modified with M(II)-organonitrogen subunits

AU - Devi, R. Nandini

AU - Burkholder, Eric

AU - Zubieta, Jon

PY - 2003/5/15

Y1 - 2003/5/15

N2 - The hydrothermal reactions of Na2WO4·2H2O with secondary metal cation sources in the presence of an appropriate organonitrogen donor yield a series of molecular clusters. The compounds [Ni(bpy)3]1.5[Ni(bpy)2(H2O){H 3W12O40}]·0.5H2O (1·0.5H2O), [{Ni(phen)2(H2O)}2{H4W 12O40}]·4H2O (2.4H2O) and [{Cu(phen)2}4{H2W12O 40}] [{Cu(phen)2}2{H2W12O 40}]·3H2O (4.3H2O) are constructed from the α-metatungstate cluster [H2W12O40]6- core, covalently linked through oxo-bridges to secondary metal-organonitrogen ligand subunits. In the case of 1, the tungstate cluster is decorated by a single {Ni(bpy)2(H2O)}2+ subunit yielding an anionic bimetallic cluster, while in 2, two {Ni(phen)2(H2O)}2+ moieties are linked to the tungstate core to form a neutral bimetallic cluster. It is noteworthy that 4 is constructed of a cationic cluster, exhibiting a central tungstate core linked to four {Cu(phen)2}2+ units, and an anionic bimetallic polyoxoanion, featuring a tungstate core bonded to two {Cu(phen)2}2+ moieties. Compound 3, [{Cu(bpy)2}2W10O32]·2H 2O (3.2H2O) consists of two {Cu(bpy)2}2+ subunits linked to the opposite sides of a decatungstate cluster, while compound 5 contains {Co(bpy)3}3+ cations and the common Keggin anion, [CoW12O40]6-.

AB - The hydrothermal reactions of Na2WO4·2H2O with secondary metal cation sources in the presence of an appropriate organonitrogen donor yield a series of molecular clusters. The compounds [Ni(bpy)3]1.5[Ni(bpy)2(H2O){H 3W12O40}]·0.5H2O (1·0.5H2O), [{Ni(phen)2(H2O)}2{H4W 12O40}]·4H2O (2.4H2O) and [{Cu(phen)2}4{H2W12O 40}] [{Cu(phen)2}2{H2W12O 40}]·3H2O (4.3H2O) are constructed from the α-metatungstate cluster [H2W12O40]6- core, covalently linked through oxo-bridges to secondary metal-organonitrogen ligand subunits. In the case of 1, the tungstate cluster is decorated by a single {Ni(bpy)2(H2O)}2+ subunit yielding an anionic bimetallic cluster, while in 2, two {Ni(phen)2(H2O)}2+ moieties are linked to the tungstate core to form a neutral bimetallic cluster. It is noteworthy that 4 is constructed of a cationic cluster, exhibiting a central tungstate core linked to four {Cu(phen)2}2+ units, and an anionic bimetallic polyoxoanion, featuring a tungstate core bonded to two {Cu(phen)2}2+ moieties. Compound 3, [{Cu(bpy)2}2W10O32]·2H 2O (3.2H2O) consists of two {Cu(bpy)2}2+ subunits linked to the opposite sides of a decatungstate cluster, while compound 5 contains {Co(bpy)3}3+ cations and the common Keggin anion, [CoW12O40]6-.

KW - Bimetallic oxide clusters

KW - Copper tungstate

KW - Hydrothermal synthesis

KW - Nickel tungstate

KW - Polyoxotungstates

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U2 - 10.1016/S0020-1693(02)01472-X

DO - 10.1016/S0020-1693(02)01472-X

M3 - Article

AN - SCOPUS:0038732710

VL - 348

SP - 150

EP - 156

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

ER -

Hydrothermal synthesis of polyoxotungstate clusters, surface-modified with M(II)-organonitrogen subunits

Abstract

Keywords

ASJC Scopus subject areas

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