Abstract
Two compounds of EuII with benzo-18-crown-6, triaqua(benzo-18-crown-6)europium(II) diperchlorate (1) and triaqua(benzo-18-crown-6)europium(II) perchlorate hydrate benzo-18-crown-6 solvate (2), were synthesized by electrochemical reduction. The coordination environment of the metal cation in both cases contains six O atoms of the crown ligand and three water molecules. The first complex display strong blue luminescence with a maximum at 425 nm. The excitation spectra do not show any significant energy transfer from the benzo rings to europium. (© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)
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