2015
DOI: 10.1002/chem.201502457
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Ln12‐Containing 60‐Tungstogermanates: Synthesis, Structure, Luminescence, and Magnetic Studies

Abstract: A new class of hexameric Ln12 -containing 60-tungstogermanates, [Na(H2 O)6 ⊂Eu12 (OH)12 (H2 O)18 Ge2 (GeW10 O38 )6 ](39-) (Eu12 ), [Na(H2 O)6 ⊂Gd12 (OH)6 (H2 O)24 Ge(GeW10 O38 )6 ](37-) (Gd12 ), and [(H2 O)6 ⊂Dy12 (H2 O)24 (GeW10 O38 )6 ](36-) (Dy12 ), comprising six di-Ln-embedded {β(4,11)-GeW10 } subunits was prepared by reaction of [α-GeW9 O34 ](10-) with Ln(III) ions in weakly acidic (pH 5) aqueous medium. Depending on the size of the Ln(III) ion, the assemblies feature selective capture of two (for Eu12 )… Show more

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Cited by 48 publications
(29 citation statements)
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References 82 publications
(31 reference statements)
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“…6a). These are in good agreement with previous results 39, 48 . The 5 D 0 → 7 F 1,3 transitions are magnetic dipole transitions and insensitive to their coordination environments, while 5 D 0 → 7 F 2,4 transitions are electric dipole transitions and sensitive to their local environments 49 .…”
Section: Resultssupporting
confidence: 94%
“…6a). These are in good agreement with previous results 39, 48 . The 5 D 0 → 7 F 1,3 transitions are magnetic dipole transitions and insensitive to their coordination environments, while 5 D 0 → 7 F 2,4 transitions are electric dipole transitions and sensitive to their local environments 49 .…”
Section: Resultssupporting
confidence: 94%
“…To get insight into the precise structure of the monodispersed T4-ZnInS NC, ESI-MS measurements were performed on a NCs/piperidine colloid (piperidine was used as dispersant for improving the concentration of monodispersed T4 clusters). 38,39 Six groups of peaks were clearly observed in high-resolution ESI-MS spectra ranging from an m/z of 1016 to 1081 with decreasing signal intensity (Figure 3a). The highest signals at m/z = 1020.4 match well with the simulated curve of [Zn 4 In 16 S 30 H] 3− , suggesting that the monodispersed T4-ZnInS clusters in dispersion are available by capturing a H + cation and dissociating five surface S 2− ions (Figure 3b).…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…Polyoxometalates (POMs) constitute a wide family of inorganic compounds displaying various properties in supramolecular chemistry, medicine, magnetism, catalysis or electrocatalysis . They are also defined as heteropolyanions because of their high negative charge and the presence of heteroatom in their structure built from condensation of monomeric basic oxoanions [MO 4 ] n‐ with M being an early‐transition metal in its highest oxidation state, typically V V , Nb V , Mo VI or W IV .…”
Section: Introductionmentioning
confidence: 99%