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Ultrastable hydrido gold nanoclusters with the protection of phosphines.
- Source :
- Chemical Communications; 6/28/2020, Vol. 56 Issue 51, p7037-7040, 4p
- Publication Year :
- 2020
-
Abstract
- The identification of hydride(s) in gold nanoclusters is a challenging task, due to the instability of gold nanoclusters containing hydrides. Herein, we report two ultrastable hydrido gold nanoclusters protected by phosphine ligands: [Au<subscript>20</subscript>(PPh<subscript>3</subscript>)<subscript>12</subscript>H<subscript>3</subscript>](SbF<subscript>6</subscript>)<subscript>3</subscript> (1<subscript>H</subscript>) and [Au<subscript>20</subscript>(PPh<subscript>3</subscript>)<subscript>12</subscript>H<subscript>2</subscript>(2-COOH-PhS)](PF<subscript>6</subscript>)<subscript>3</subscript> (2<subscript>H</subscript>). The presence of hydrides in gold(0)–gold(I) nanoclusters is clearly demonstrated by ESI mass spectrometry and NMR spectroscopy. Single crystal structural determination reveals that both nanoclusters have an unprecedented Au<subscript>20</subscript> core consisting of a Au<subscript>9</subscript> unit and a Au<subscript>11</subscript> unit. Such cores derived from the connection of different basic units are important for understanding the evolution and stability of metal nanoclusters. The hydride (H<superscript>−</superscript>) was also verified by a charge distribution calculation. [ABSTRACT FROM AUTHOR]
- Subjects :
- NUCLEAR magnetic resonance spectroscopy
MASS spectrometry
SINGLE crystals
HYDRIDES
Subjects
Details
- Language :
- English
- ISSN :
- 13597345
- Volume :
- 56
- Issue :
- 51
- Database :
- Complementary Index
- Journal :
- Chemical Communications
- Publication Type :
- Academic Journal
- Accession number :
- 144240498
- Full Text :
- https://doi.org/10.1039/d0cc02339f