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Octahedron-shaped three-shell Ln14-substituted polyoxotungstogermanates encapsulating a W4O15 cluster: luminescence and frequency dependent magnetic properties.
- Source :
- Chemical Communications; 3/7/2019, Vol. 55 Issue 19, p2857-2860, 4p
- Publication Year :
- 2019
-
Abstract
- A series of new Ln<subscript>14</subscript>-substituted polyoxometalates, H<subscript>27</subscript>Na<subscript>16</subscript>[(Ln<subscript>14</subscript>(H<subscript>2</subscript>O)W<subscript>4</subscript>(OH)O<subscript>14</subscript>)(WO<subscript>4</subscript>)<subscript>4</subscript>(GeW<subscript>10</subscript>O<subscript>38</subscript>)<subscript>6</subscript>]·nH<subscript>2</subscript>O (nā 86) (1-Ln, Ln = Eu, Gd, Tb, Dy, Ho, Er), which contain 14 Ln<superscript>3+</superscript> and 6 {Ī±(1,5)-[GeW<subscript>10</subscript>O<subscript>38</subscript>]<superscript>12ā</superscript>} units, has been synthesized in one-pot reactions. As the first 14-Ln-containing polyoxometalates, the octahedron-shaped three-shell structure of the [(Ln<subscript>14</subscript>(H<subscript>2</subscript>O)W<subscript>4</subscript>(OH)O<subscript>14</subscript>)(WO<subscript>4</subscript>)<subscript>4</subscript>(GeW<subscript>10</subscript>O<subscript>38</subscript>)<subscript>6</subscript>]<superscript>43ā</superscript> polyanion is made up of a W<subscript>4</subscript> tetrahedron, a Ln<subscript>14</subscript>W<subscript>4</subscript> tetrahedron and a Ge<subscript>6</subscript>W<subscript>60</subscript> octahedron. Compound 1-Dy exhibits frequency dependent magnetic properties. Compounds 1-Eu, 1-Tb and 1-Dy exhibit the characteristic emission bands of the Ln<superscript>3+</superscript> ion. [ABSTRACT FROM AUTHOR]
- Subjects :
- POLYOXOMETALATES
CHEMICAL synthesis
POLYANIONS
TETRAHEDRA
MAGNETIC properties
Subjects
Details
- Language :
- English
- ISSN :
- 13597345
- Volume :
- 55
- Issue :
- 19
- Database :
- Complementary Index
- Journal :
- Chemical Communications
- Publication Type :
- Academic Journal
- Accession number :
- 135010805
- Full Text :
- https://doi.org/10.1039/c9cc00073a