Finely dispersed platinum and platinum–ruthenium particles, characterized initially by transmission electron microscopy, are shown by X-ray absorption and X-ray scattering techniques to retain their face centred cubic structure. The electron density of these particles of colloidal dimension, judging from white-line intensities, seems to be enhanced by the polymeric macro-ligand to which they are bound.
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Richard et al. (1991) studied this question.