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Abstract
X-ray structure analysis of the [(NH4)1−xRbx]3H(SO4)2 mixed crystals with x = 0.57 was performed at 180 K in order to study the hydrogen bond character. The measurements were performed with the KUMA-4 single crystal diffractometer. The crystal structure was refined by using SHELXL93 program. At the room temperature and at 180 K the crystals are isostructural and belong to monoclinic system C2/c. The hydrogen bond distance R(O…O) at 180 K is 2.558(5)Å. The electron density of split hydrogen atoms in R(O…O) bonds has been observed on a differential Fourier map.