A Model Description of the Thermal Behavior at Low Temperature

A recent recalculation [43], utilizing the interatomic distance obtained from EXAFS [39,40] and the spring constant corrected for the higher binding energy extracted from the DSC results [57] reduced the ditference between the calculated and measured s to about 2%. 

The success of this simple four site model in predicting the relative site intensities using only one free parameter, taken together with the calculated linear dependence of the f-factors on the coordination number, is yet another confirmation of the assumed structure of AU55. 

As an additional point, the f-factors calculated for the four sites of Aujj [25], as well as those for several smaller and larger magic-number and non-magic number cuboctahedra, for most of which no real examples of gold cluster compounds exist, exhibit a linear dependence on the coordination number of each site. Several of these are shown in Fig. 5. Thus, the coordination numbers of 

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