" Raman Spectra of Mass-Selected
Cobalt Dimers in Argon
Matrices "
Jian-Guo Dong, Zhendong Hu, Robert Craig, John
R. Lombardi, and D. M. Lindsay,
J. Chem. Phys., 101, 9280, (1994).
Abstract
We report absorption and Raman spectra for cobalt dimers
in an argon matrix prepared by the mass-selected ion deposition technique.
A weak dimer absorption band was found between 425 and 485 nm. Resonance
Raman spectra (obtained by exciting between 457.9-488.0 nm) give we"
= 296.8(54) cm-1 with wece"
= 2.2(8) cm-1 .The dicobalt data are discussed in terms of results
from recent photodetachment experiments which suggest a changeover from
d-d bonding to s-s bonding along the series Fe2-->Cu2.
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