Intercombination Spectra of Chromium Acetylacetonate Crystals at Low Temperatures

Abstract
The spectra of chromium acetylacetonate and several derivatives have been recorded at 77° and 4°K. The structure in the 12 000–15 000 cm—1 region has been assigned to vibronic components of 2E4A2 and the 2T1 state located. The effect of ligand halogenation on the trigonal field splitting is small.
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