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Record High-Nuclearity Polyoxoniobates: Discrete Nanoclusters {Nb114}, {Nb81}, and {Nb52}, and Extended Frameworks Based on {Cu3Nb78} and {Cu4Nb78}.
- Source :
- Angewandte Chemie International Edition; 12/18/2017, Vol. 56 Issue 51, p16288-16292, 5p
- Publication Year :
- 2017
-
Abstract
- A series containing the highest nuclearity polyoxoniobate (PONb) nanoclusters, ranging from dimers to tetramers, has been obtained. They include one 114-nuclear {Li<subscript>8</subscript>⊂Nb<subscript>114</subscript>O<subscript>316</subscript>}, one 81-nuclear {Li<subscript>3</subscript>K⊂Nb<subscript>81</subscript>O<subscript>225</subscript>}, and one 52-nuclear {H<subscript>4</subscript>Nb<subscript>52</subscript>O<subscript>150</subscript>}. The Nb nuclearity of these PONbs is remarkably larger than those of all known high-nuclearity PONbs (≤32). Furthermore, the introduction of 3d Cu<superscript>2+</superscript> ions can lead to the generation of extended inorganic-organic hybrid frameworks built from novel, high-nuclearity, nanoscale heterometallic PONb building blocks {H<subscript>3</subscript>Cu<subscript>3</subscript>Nb<subscript>78</subscript>O<subscript>222</subscript>} or {H<subscript>3</subscript>Cu<subscript>4</subscript>(en)Nb<subscript>78</subscript>O<subscript>222</subscript>}. These building blocks also contain the largest number of Nb centers of any heterometallic PONbs reported to date. The synthesis of new-type PONbs has long been a challenging subject in PONb chemistry. [ABSTRACT FROM AUTHOR]
- Subjects :
- POLYOXOMETALATES
NIOBIUM compounds
COPPER ions
BRIDGING ligands
PHOTOCATALYSIS
Subjects
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 56
- Issue :
- 51
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 126749245
- Full Text :
- https://doi.org/10.1002/anie.201709565