Tanner, P. A. and Zhou, X. J. and Wong, W. T. and Kratzer, Cornelius and Yersin, Hartmut (2005) Structure and spectroscopy of Tb[Au(CN)(2)](3)center dot 3H(2)O. JOURNAL OF PHYSICAL CHEMISTRY B, 109 (27). pp. 13083-13090. ISSN 1520-6106,
Full text not available from this repository.Abstract
The compound Tb[Au(CN)(2)](3)center dot 3H(2)O crystallizes in a layered structure in the hexagonal space group P6(3)/MCM with the 9-coordinate environment of Tb3+ Comprising six (CN)(-) and three OH2 in a tricapped trigonal prism. The shortest (AuAu)-Au-... distance is 3.31 angstrom. The vibrational spectra show that the series Ln[Au(CN)(2)](3)-3H(2)O (Ln = Y, Pr, Sm, Eu, Tb) are isostructural. The electronic spectra of Eu[Au(CN)(2)](3)center dot 3H(2)O clearly show that Eu3+ occupies one site of spectroscopic site symmetry D-3h, in agreement with the crystallographic data. The electronic emission and absorption spectra of Tb[Au(CN)(2)](3)center dot 3H(2)O have been recorded at temperatures down to 1.5 K, and the f-f pure electronic transitions are interpreted in detail as arising from the lowest electronic states (in D-3h symmetry) (F-7(6))E' in absorption and (D-5(4))E" in emission. At low energy, further bands are assigned to the vibronic structure of the C equivalent to N stretching and water stretching modes, with the latter more predominant. Although the C equivalent to N stretching vibrations show exclusive infrared or Raman activity in Tb[Au(CN)(2)](3)center dot 3H(2)O, both of these infrared and Raman active modes are observed in the two-center vibronic transitions. The reasons for this are discussed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LANTHANIDE ION COMPLEXES; AUROPHILICITY-COORDINATION INTERPLAY; 2-CENTER OPTICAL-TRANSITIONS; COOPERATIVE VIBRONIC SPECTRA; STATE ENERGY-TRANSFER; RARE-EARTH IONS; SILVER DICYANIDES; CRYSTAL-STRUCTURE; BIMETALLIC ASSEMBLIES; MAGNETIC-PROPERTIES; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Hartmut Yersin |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 04 May 2021 10:54 |
| Last Modified: | 04 May 2021 10:54 |
| URI: | https://pred.uni-regensburg.de/id/eprint/35879 |
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