Abstract
The photoelectron spectra of small gas-phase YnOm- clusters (n = 2-10, m = 1-3) are measured at photon energies of 3.49 and 4.66 eV. Cluster generation is performed with the aid of laser vaporization, whereas the kinetic energy of electrons is measured using a magnetic bottle photoelectron spectrometer. The evolution of the electronic structure of neutral yttrium oxide clusters is discussed in terms of both sequential oxygen addition to the metal cluster core and sequential metal atom increase. Electron affinities and vertical detachment energies are measured and compared to ionization potentials of the monoxide cluster series [Knickelbein, M. J. Chem. Phys. 1995, 102, 1]. A general trend in the observed photoelectron spectra is a shifting of threshold energies to higher binding energies with increasing cluster size n. At low electron binding energies, main spectral features are contributed from metal d-band orbitals whereas the O 2p contribution becomes apparent with increasing oxygen content due to a higher degree of hybridization of yttrium s, d, and oxygen 2p orbitals. The differences of yttrium-oxygen dissociation energies are determined and compared.
| Original language | English |
|---|---|
| Pages (from-to) | 7534-7540 |
| Number of pages | 7 |
| Journal | Journal of Physical Chemistry A |
| Volume | 105 |
| Issue number | 32 |
| DOIs | |
| Publication status | Published - 2001 Aug 16 |
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- Physical and Theoretical Chemistry
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Photoelectron spectroscopy of yttrium oxide cluster anions : Effects of oxygen and metal atom addition. / Pramann, Axel; Nakamura, Yoshiaki; Nakajima, Atsushi; Kaya, Koji.
In: Journal of Physical Chemistry A, Vol. 105, No. 32, 16.08.2001, p. 7534-7540.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Photoelectron spectroscopy of yttrium oxide cluster anions
T2 - Effects of oxygen and metal atom addition
AU - Pramann, Axel
AU - Nakamura, Yoshiaki
AU - Nakajima, Atsushi
AU - Kaya, Koji
PY - 2001/8/16
Y1 - 2001/8/16
N2 - The photoelectron spectra of small gas-phase YnOm- clusters (n = 2-10, m = 1-3) are measured at photon energies of 3.49 and 4.66 eV. Cluster generation is performed with the aid of laser vaporization, whereas the kinetic energy of electrons is measured using a magnetic bottle photoelectron spectrometer. The evolution of the electronic structure of neutral yttrium oxide clusters is discussed in terms of both sequential oxygen addition to the metal cluster core and sequential metal atom increase. Electron affinities and vertical detachment energies are measured and compared to ionization potentials of the monoxide cluster series [Knickelbein, M. J. Chem. Phys. 1995, 102, 1]. A general trend in the observed photoelectron spectra is a shifting of threshold energies to higher binding energies with increasing cluster size n. At low electron binding energies, main spectral features are contributed from metal d-band orbitals whereas the O 2p contribution becomes apparent with increasing oxygen content due to a higher degree of hybridization of yttrium s, d, and oxygen 2p orbitals. The differences of yttrium-oxygen dissociation energies are determined and compared.
AB - The photoelectron spectra of small gas-phase YnOm- clusters (n = 2-10, m = 1-3) are measured at photon energies of 3.49 and 4.66 eV. Cluster generation is performed with the aid of laser vaporization, whereas the kinetic energy of electrons is measured using a magnetic bottle photoelectron spectrometer. The evolution of the electronic structure of neutral yttrium oxide clusters is discussed in terms of both sequential oxygen addition to the metal cluster core and sequential metal atom increase. Electron affinities and vertical detachment energies are measured and compared to ionization potentials of the monoxide cluster series [Knickelbein, M. J. Chem. Phys. 1995, 102, 1]. A general trend in the observed photoelectron spectra is a shifting of threshold energies to higher binding energies with increasing cluster size n. At low electron binding energies, main spectral features are contributed from metal d-band orbitals whereas the O 2p contribution becomes apparent with increasing oxygen content due to a higher degree of hybridization of yttrium s, d, and oxygen 2p orbitals. The differences of yttrium-oxygen dissociation energies are determined and compared.
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U2 - 10.1021/jp010749b
DO - 10.1021/jp010749b
M3 - Article
AN - SCOPUS:0035899765
VL - 105
SP - 7534
EP - 7540
JO - Journal of Physical Chemistry A
JF - Journal of Physical Chemistry A
SN - 1089-5639
IS - 32
ER -