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Icosahedral gold cage clusters: M@Au12- (M=V, Nb, and Ta).
- Source :
-
Journal of Chemical Physics . 11/1/2004, Vol. 121 Issue 17, p8369-8374. 6p. 1 Diagram, 3 Charts, 4 Graphs. - Publication Year :
- 2004
-
Abstract
- We report the observation and characterization of a series of stable bimetallic 18-valence-electron clusters containing a highly symmetric 12-atom icosahedral Au cage with an encapsulated central heteroatom of Group VB transition metals, M@Au12- (M=V,Nb,Ta). Electronic and structural properties of these clusters were probed by anion photoelectron spectroscopy and theoretical calculations. Characteristics of the M@Au12- species include their remarkably high binding energies and relatively simple spectral features, which reflect their high symmetry and stability. The adiabatic electronic binding energies of M@Au12- were measured to be 3.70±0.03, 3.77±0.03, and 3.76±0.03 eV for M=V, Nb, and Ta, respectively. Comparison of density-functional calculations with experimental data established the highly symmetric icosahedral structures for the 18-electron cluster anions, which may be promising building blocks for cluster-assembled nanomaterials in the form of stoichiometric [M@Au12-]X+ salts. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 121
- Issue :
- 17
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 14842445
- Full Text :
- https://doi.org/10.1063/1.1799574