Abstract
197Au Mössbauer effect spectroscopy and specific heat measurements have been performed as a function of temperature on three gold polynuclear cluster compounds, [Au9(PPh3)8](NO3)3, Au11(PPh3)7(SCN)3, and Au55(PPh3)12Cl6. The Mössbauer data yield information on the vibrational motions of the various distinguishable Au sites, as well as on the motion of the clusters as a whole. The Mössbauer and the specific heat data are successfully described by a superposition of inter- and intra-cluster vibrations. The latter are determined by calculating numerically the normal modes of vibration of the metal cores.
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Smit, H.H.A., Thiel, R.C. & de Jongh, L.J. The thermal motion of gold atoms in metal cluster compounds as determined by Mössbauer and specific heat. Z Phys D - Atoms, Molecules and Clusters 12, 193–197 (1989). https://doi.org/10.1007/BF01426936
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DOI: https://doi.org/10.1007/BF01426936