Photoelectron spectroscopy of yttrium oxide cluster anions: Effects of oxygen and metal atom addition

Axel Pramann, Yoshiaki Nakamura, Atsushi Nakajima, Koji Kaya

Research output: Contribution to journalArticle

33 Citations (Scopus)

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 languageEnglish
Pages (from-to)7534-7540
Number of pages7
JournalJournal of Physical Chemistry A
Volume105
Issue number32
DOIs
Publication statusPublished - 2001 Aug 16

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yttrium oxides
Photoelectron spectroscopy
Anions
oxygen atoms
Photoelectrons
Metals
photoelectron spectroscopy
Oxygen
anions
Yttrium
Atoms
Binding energy
photoelectrons
metals
atoms
oxygen
yttrium
Electron affinity
binding energy
Electrons

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

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 journalArticle

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