Vibronic interaction in europium nitrates Eu(NO3)3 x 4SOR2 |
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Authors: | Tsaryuk V I Savchenko V D Zolin V F Kudryashova V A |
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Institution: | Molecular Engineering Laboratory, Institute of Radioengineering and Electronics of RAS, Fryazino Moscow reg., Russia. vit225@ire216.msk.su |
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Abstract: | Luminescence and excitation of luminescence vibronic spectra of europium nitrates Eu(NO3)3 x 4SOR2 containing sulphoxide derivatives were obtained and analysed. Some factors influencing the intensity distribution in vibronic sidebands are discussed. Significant variation of the intensity distribution in antiStokes sidebands of Eu3+ electronic transitions in series of nitrates results from the difference in effective charges on coordinated oxygen atoms of ligands. Another important detail of the vibronic spectra is a redistribution of intensity in the region of 5D0, 5D1-->7F2 transitions of luminescence spectra originated in overlap of different vibronic transitions. Mixing between the 7F2 electronic state of Eu3+ and vibronic satellites of 7F0 electronic state was studied both under conditions of resonance and in case of significant detuning. |
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