Luminescence and crystal field analysis of Eu in Eu[Co(CN)6]·4H2O |
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Authors: | Xianju Zhou Chang-Kui Duan Peter A Tanner |
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Institution: | a Institute of Modern Physics, Chongqing University of Post and Telecommunications, Chongqing 400065, PR China b Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong S.A.R., PR China |
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Abstract: | The vibrational spectra of EuCo(CN)6]·4H2O and luminescence spectra of Eu3+ in this compound, using 355 nm excitation at temperatures down to 10 K, have been assigned. A clear distinction is made between the n=5 and 4 members of the LnM(CN)6]·nH2O series from the vibrational spectra. The electronic spectra show prominent vibronic structures, particularly for the 5D0→7F2 sideband. A resonance occurs between the transitions 5D0→7F1(III) and 5D0→7F0+ν(Eu−N). A crystal field analysis of the derived energy data set is presented for Eu3+ in eight coordination geometry. |
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Keywords: | A Inorganic compounds C Infrared spectroscopy D Crystal field D Luminescence D Phonons |
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