In:
Acta Crystallographica Section E Crystallographic Communications, International Union of Crystallography (IUCr), Vol. 77, No. 12 ( 2021-12-01), p. 1327-1329
Abstract:
RhPb 2 (rhodium dilead) is a superconductor crystallizing in the CuAl 2 structure type (space group I 4/ mcm ). The Rh and Pb atoms are located at the 4 a (site symmetry 422) and 8 h ( m .2 m ) sites, respectively. The crystal structure is composed of [RhPb 8 ] antiprisms, which share their square faces along the c axis and the edges in the direction perpendicular to the c axis. We have succeeded in growing single crystals of RhPb 2 and have re-determined the crystal structure on basis of single-crystal X-ray diffraction data. In comparison with the previous structure studies using powder X-ray diffraction data [Wallbaum (1943). Z. Metallkd . 35 , 218–221; Havinga et al. (1972). J. Less-Common Met. 27 , 169–186], the current structure analysis of RhPb 2 leads to more precise unit-cell parameters and fractional coordinates, together with anisotropic displacement parameters for the two atoms. In addition and likewise different from the previous studies, we have found a slight deficiency of Rh in RhPb 2 , leading to a refined formula of Rh 0.950 (9) Pb 2 .
Type of Medium:
Online Resource
ISSN:
2056-9890
DOI:
10.1107/S2056989021012275
DOI:
10.1107/S2056989021012275/wm5626sup1.cif
DOI:
10.1107/S2056989021012275/wm5626Isup4.hkl
Language:
Unknown
Publisher:
International Union of Crystallography (IUCr)
Publication Date:
2021
detail.hit.zdb_id:
2843762-7
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