A banana-shaped iron(III)-substituted tungstogermanate containing two types of lacunary polyoxometalate units

Li, Bing; Zhao, Junwei; Zheng, Shou‐Tian; Yang, Guo‐Yu

doi:10.1016/j.inoche.2008.11.011

Cited by 34 publications

(8 citation statements)

References 40 publications

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“…In the case of compounds I and II, such rearrangement results in the formation of [Fe3O12] 15− units; this is most probably explained by the high stability of such trinuclear geometry. To some extent, that statement could be confirmed by the observation of the same clusters in the composition of some other complexes [30][31][32][33][34]. On the other hand, the [FexOy]n species could be formed in solution from FeCl3 and the base that is always present in such media (OHin equilibrium with OEt -).…”

Section: Syntheses and Structures Of Catalystsmentioning

confidence: 66%

High Catalytic Activity of Heterometallic (Fe6Na7 and Fe6Na6) Cage Silsesquioxanes in Oxidations with Peroxides

et al. 2017

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Section: Syntheses and Structures Of Catalystsmentioning

confidence: 66%

High Catalytic Activity of Heterometallic (Fe6Na7 and Fe6Na6) Cage Silsesquioxanes in Oxidations with Peroxides

et al. 2017

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“…Our group has already reported the transformations of {A-α-GeW 9 O 34 } → {α 1 -GeW 10 O 37 } in [Zr 4 (μ 3 -O) 2 (Tris) 2 (α-GeW 10 O 37 ) 2 ] 12– and {A-α-GeW 9 O 34 } → {α 2 -GeW 10 O 38 } in [KFe 3 Sm 3 (H 2 O) 6 (α-GeW 10 O 38 ) 3 ] 17– . As the case stands, structural transformation from {A-α-GeW 9 } to {α-GeW 6 }, {α-GeW 8 }, {B-α-GeW 9 }, or {α-GeW 11 } fragments has also been observed (Figure ). However, there is no report for the transformation of {A-α-GeW 9 O 34 } → {β 2 -GeW 10 O 37 }, which is first observed in the structure of 2 .…”

Section: Results and Discussionmentioning

confidence: 95%

“…The structural transformations of {A-α-GeW 9 } → {α 1 -GeW 10 }, {A-α-GeW 9 } → {β 2 -GeW 10 }, and {A-α-GeW 9 } → {α 2 -GeW 10 } should happen during the synthetic process of 1− 3, respectively. Our group has already reported the trans- 15 As the case stands, structural transformation from {A-α-GeW 9 } to {α-GeW 6 }, 16 {α-GeW 8 }, 3h {B-α-GeW 9 }, 3h or {α-GeW 11 } 17 fragments has also been observed (Figure 5). However, there is no report for the transformation of {A-α-GeW 9 O 34 } → {β 2 -GeW 10 O 37 }, which is first observed in the structure of 2.…”

Section: Inorganic Chemistrymentioning

confidence: 81%

Syntheses, Structures, and Electrochemical Properties of Three New Acetate-Functionalized Zirconium-Substituted Germanotungstates: From Dimer to Tetramer

Zhang

Wang

et al. 2019

Inorg. Chem.

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Under hydrothermal conditions, three new acetate-functionalized zirconium-substituted polyoxometalates, H 4 Na 2 [Na 6 (H 2 O) 22 ][Zr 4 3), were synthesized and characterized. In 1, the sandwiched dimer [Zr 4 (μ 3 -O) 2 (OH) 2 (OAc) 2 (α-GeW 10 O 37 ) 2 ] 12− was linked to a hexameric [Na 6 (H 2 O) 22 ] 6+ cluster to form a 1D chain. In 2, the trimer was constructed from three [β 2 -GeW 10 O 37 ] 10− units and a new [Zr 6 O 3 (OH) 3 (OAc)(H 2 O)] 14+ cluster. In 3, the tetramer was built by two novel sandwich-type dimers [Zr 2 (OAc) 2 (α 2 -GeW 10 O 38 ) 2 ] 18− and one unique [Zr 5 (μ 3 -OH) 4 (OH) 2 ] 14+ core in an approximately orthogonal fashion, showing a staggered tetrahedral polyanion. Also, the electrochemistry and electrocatalytic properties of 3 were studied, exhibiting good catalytic activities toward the reduction of H 2 O 2 , BrO 3 − , and NO 2 − .

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“…5c,7 Several mixed addenda Keggin structures have been characterized with the general aim of creating new magnetic materials. The works of Xue, 8 Hill, 9 Yang, 10 Niu, 11 Nadjo, 12 and others have brought considerable advances to the field. The latter two papers are of interest since they assign magnetic exchange coupling constants to these complexes from magnetic susceptibility measurements.…”

Section: ■ Introductionmentioning

confidence: 99%

Magneto-Structural Analysis of Iron(III) Keggin Polyoxometalates

et al. 2017

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A computational study and magnetic susceptibility measurements of three homonuclear Fe(III) Keggin structures are herein presented: the [FeO 4 @Fe 12 F 24 (μ− OCH 3 ) 12 ] 5− anion (1), the [Bi 6 {FeO 4 @Fe 12 O 12 (OH) 12 }(μ-O 2 CCCl 3 ) 12 ] + cation (2) and its polymorph [Bi 6 {FeO 4 @ Fe 12 O 12 (OH) 10 (H 2 O) 2 }(μ-O 2 CCF 3 ) 10 ] 3+ (3). These results are contrasted with the exchange interactions present in the previously characterized [Fe 6 (OH) 3 Ge 2 W 18 O 68 (OH) 6 ] 11− and [H 12 As 4 Fe 8 W 30 O 120 (H 2 O) 2 ] 4− anions. The computational analysis shows that the most significant antiferromagnetic spin coupling takes place at the junction between each of the {Fe 3 O 6 (OH) 3 }/{Fe 3 F 6 (OCH 3 ) 3 } framework motifs, a possibility that had been previously discarded in the literature on the basis of the Fe−Fe distances. For all the examined iron(III) Keggin structures, it is found that the magnitude of the magnetic couplings within each structural subunit follows the same trend.

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A banana-shaped iron(III)-substituted tungstogermanate containing two types of lacunary polyoxometalate units

Cited by 34 publications

References 40 publications

High Catalytic Activity of Heterometallic (Fe6Na7 and Fe6Na6) Cage Silsesquioxanes in Oxidations with Peroxides

High Catalytic Activity of Heterometallic (Fe6Na7 and Fe6Na6) Cage Silsesquioxanes in Oxidations with Peroxides

Syntheses, Structures, and Electrochemical Properties of Three New Acetate-Functionalized Zirconium-Substituted Germanotungstates: From Dimer to Tetramer

Magneto-Structural Analysis of Iron(III) Keggin Polyoxometalates

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