Excitation Energy Transfer Chromium–Chromium from the Cation to the Anion in [Cr urea6][Cr(CN)6]·3H2O

Abstract
Luminescence measurements with crystalline [Cr urea6][Cr(CN)6]·3H2O using light of 580 mμ and 435 mμ for excitation clearly indicate an excitation energy transfer from chromium(III) in the cation to chromium(III) in the anion.
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