Polarized emission from Ba[Pt(CN)4]·4H2O single crystals under high pressure |
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Authors: | Manfred Stock Hartmut Yersin |
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Abstract: | The emission spectra of single crystal BaPt(CN)4]·4H2O were measured from 0 to 23 kbar for the two electronic transitions which are polarized with Ec and E;c. They exhibit a red-shift of −280 cm−1/kbar and −195 cm−1/kbar, respectively. 3he red-shift is explained by a pressure induced reduction of the intermolecular separation R in the direction of the linear chain (c-axis). The emission energies obtained at different pressures are compared with the results under normal conditions for various MePt(CN)4]·xH2O salts (with different R). The close analogy between these two methods of R-reduction supports the importance of one-dimensional interaction for the interpretation of electronic properties of the tetracyano-platinates. BaPt(CN)4]·4H2O shows a structural transition region in the pressure range studied here. |
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