Electronic spectroscopy of silver dimer rare gas complexes

Journal Article · Fri Nov 01 04:00:00 EST 1991 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.461545· OSTI ID:5132224

Willey, K F; Cheng, P Y; Yeh, C S; Robbins, D L; Duncan, M A ^[1]

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1. Department of Chemistry, University of Georgia, Athens, Georgia (USA)

Vibrationally resolved electronic spectra are reported for the metal dimer-rare gas complexes Ag{sub 2}--Ar and Ag{sub 2}--Kr. These spectra are obtained using resonant two-photon photoionization in the energy region near the Ag{sub 2} {ital B}{l arrow}{ital X} electronic transition (280--285 nm). Both complexes exhibit extensive activity in three vibrational modes, making it possible to determine vibrational constants, anharmonicities, and cross-mode couplings. An unusual cancellation of factors results in the Kr complex ({omega}{sup {prime}}{sub e} =72.6 cm{sup {minus}1}) having nearly the same metal-rare gas stretching frequency as the Ar complex ({omega}{sup {prime}}{sub e}=73.9 cm{sup {minus}1}). Progressions extending over a significant range of the excited state potential surfaces make it possible to derive the excited state dissociation energies ({ital D}{sup {prime}}{sub 0}=755 and 1205 cm{sup {minus}1} for Ar and Kr, respectively). Combination with the red-shifted electronic state origins yields the corresponding ground state dissociation energies ({ital D}{sup }{sub 0}=275 and 394 cm{sup {minus}1} for Ar and Kr, respectively). Potential energy surfaces are investigated for excited and ground states of both complexes.

• DOE Contract Number: FG09-90ER14156
• OSTI ID: 5132224
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 95:9; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ARGON COMPLEXES
CHEMICAL BONDS
COMPLEXES
COUPLING
DIMERS
DISSOCIATION
ELECTROMAGNETIC RADIATION
ELECTRON SPECTRA
ELECTRONIC STRUCTURE
ENERGY
ENERGY LEVELS
EXCITED STATES
GROUND STATES
IONIZATION
KRYPTON COMPLEXES
MULTI-PHOTON PROCESSES
PHOTOIONIZATION
POTENTIAL ENERGY
RADIATIONS
RESOLUTION
SILVER COMPLEXES
SPECTRA
TRANSITION ELEMENT COMPLEXES
ULTRAVIOLET RADIATION
VIBRATIONAL STATES