Photoelectron spectroscopy of C{sub 4}{sup {minus}}, C{sub 6}{sup {minus}}, and C{sub 8}{sup {minus}}

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.474715· OSTI ID:527996

Xu, C; Burton, G R; Taylor, T R; Neumark, D M ^[1]

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1. Department of Chemistry, University of California, Berkeley, California 94720 (United States)

Photoelectron spectra of C{sub 4}{sup {minus}}, C{sub 6}{sup {minus}}, and C{sub 8}{sup {minus}} were obtained at two photodetachment wavelengths, 266 nm (4.657 eV) and 213 nm (5.822 eV). The spectra reveal considerably more electronic and vibrational structure than was seen in previous studies of these species [D. W. Arnold {ital et al.}, J. Chem. Phys. {bold 95}, 8753 (1991)]. Term values for several low-lying excited electronic states of the neutral carbon clusters have been obtained, as well as new vibrational frequencies for the ground and some of the excited electronic states of the neutral clusters. The assignments of excited electronic states were aided by measurements of the photoelectron angular distributions. A new assignment of the vibrational frequencies for C{sub 6} is in considerably better agreement with {ital ab initio} results than our original assignment. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 527996
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 9 Vol. 107; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
ANIONS
ATOMIC CLUSTERS
CARBON
ELECTRONIC STRUCTURE
EXCITED STATES
GROUND STATES
PHOTOELECTRON SPECTROSCOPY
VIBRATIONAL STATES