Abstract
Complexation between europium(III) 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate Eu(Fod)3 in the ground and excited electronic states and D-(D) and L-camphor (L) in benzene was studied. The stability constants and thermodynamic parameters of formation of the complexes [Eu(Fod)3(L)] and [Eu(Fod)3(D)] were determined by chemiluminescent and polarimetric methods for the ground state and by kinetic luminescence spectroscopy for the excited state. The photoexcitation of Eu(Fod)3 was found to enhance the stabilities of [Eu(Fod)3(L)] and [Eu(Fod)3(D)]. It was concluded that the photoexcitation of the f-f transitions in Eu(Fod)3 increases the contribution from the 4f orbital to coordination bonding.
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Original Russian Text © A.S. Alyab’ev, S.S. Ostakhov, I.F. Kavsarova, V.P. Kazakov, 2007, published in Koordinatsionnaya Khimiya, 2007, Vol. 33, No. 5, pp. 386–391.
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Alyab’ev, A.S., Ostakhov, S.S., Kavsarova, I.F. et al. Complexation of Eu(Fod)3 in the ground and excited electronic states with the enantiomers of camphor in benzene: Chemiluminescence, kinetic luminescence, and polarimetric investigations. Russ J Coord Chem 33, 377–382 (2007). https://doi.org/10.1134/S1070328407050120
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DOI: https://doi.org/10.1134/S1070328407050120