ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The magnetic circular dichroism (MCD) of CD3I is reported in the 48 700–60 100 cm−1 region. This region embraces the 5p → 6s manifold, much of the 5p →6 p manifold, and perhaps some members of the 5p → 5d Rydberg manifold of states. The results in the 5p →6 s manifold are confirmatory of the same work in CH3I [Scott et al., J. Chem. Phys. 68, 4678 (1978)]; some questions occur concerning the conferral of absorption intensity on the highly forbidden 5p →6 s[1] state of these molecules. The MCD of part of the 5p →6 p manifold of CD3I is also reported. Five possible 5 p→6 p origins have been securely identified and a sixth has been tentatively assigned. Apart from one of these, that at 58 930 cm−1, the other five origins assigned here match none of those found by MPI spectroscopy [Dobber, Buma, and de Lange, J. Chem. Phys. 99, 836 (1993)], suggesting a degree of complementarity of both data sets. Relative magnetic moments for all six observed states in the 5p → 6p region have been determined: the 58 930 cm−1 origin has been assigned as a 1Σ+ state, possibly an interloper from the 5d manifold, and the 59 630 cm−1 origin has been assigned as a 1Π1 state. The 5p → 6p manifold of CH3I is also discussed and assignments, which are largely vested in correlations of energies, absorption intensities, and MCD specifics with the corresponding excitations of CD3I, are given. © 1996 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.470840
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