Ca2RhD5.4 – Strukturbestimmung über Neutronenbeugungsexperimente

Ca₂RhH_5.4 – Structure Determination via Neutron Diffraction Experiments The structure of Ca₂RhH₅ described by Moyer et al. is only known respective to the arrangement of the metal atoms. Elastic neutron diffraction experiments on the deuterated compound led to the complete structure, which corresponds to that of the K₂PtCl₆ type structure with the chloride sites statistically occupied in accordance with the formula of the mixed valent compound Ca₂RhD_5.4. A neutron diffraction diagram of a high resolution T–O–F spectrometer led to the up to now unknown compound Ca₈Rh₅D₂₃ which crystallises isotypic to the analogous strontium compound in an atomic arrangement representing a transition from the K₂PtCl₆ type to the perovskite type structure.