Abstract

The phosphorescence lifetimes of [Cr(CN) 6] 3- in KCl have been measured in the temperature range 10–300 K. The data were compared with a model that assumes that the frequencies of odd parity promoting modes determine the activation energies of the Arrhenius relationship. We find that the odd parity modes ν 8, responsible for the most intensive band in the vibronic spectrum, determine the temperature dependence of the 2E g→ 4A 2g phosphorescence.

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