Experimental study on the resonance Raman effect and absorption spectrum of ClO2 in solution

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Abstract
Chlorine dioxide dissolved in inert solvents [CCl4 and CFCl3 (Freon ll)] has been investigated by means of u.v./visual‐absorption spectroscopy and Raman‐spectroscopy. The vibrational constants for the 2B1, ground state and the2A2 excited state have been redetermined. While the ground state constants are in good agreement with gas state data, the excited state constants differ considerably from previous data. The Raman excitation profile is given for the v1 fundamental and its first harmonic in the region of excitation from 6471 Å to 4579 Å. Dispersion of the depolarization ratio (ρ = 0.16(6471 Å); ρ = 0.23(4765 Å))shows the contribution of two electronic state to the polarizability tensor. Expermental evidence is given that the decomposition of ClO2 in solution is not sensitive to vislble light.