Rh8Cd43: A rhombohedral variant of a cubic giant cell structure

The compound Rh8Cd43 has been synthesized and the structure has been analyzed by single crystal X-ray diffraction. The fully ordered compound Rh8Cd43 crystallizes in the rhombohedral space group R3¯m (166) and contains 306 atoms per unit cell. This new compound is to our knowledge the first example...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 2017-02, Vol.695, p.3760-3766
Main Authors: Koley, Biplab, Ghanta, Sivaprasad, Misra, Samiran, Jana, Partha Pratim
Format: Article
Language:English
Subjects:
Chemical synthesis
Crystal growth
Crystal structure
Electronic structure
Intermetallics
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The compound Rh8Cd43 has been synthesized and the structure has been analyzed by single crystal X-ray diffraction. The fully ordered compound Rh8Cd43 crystallizes in the rhombohedral space group R3¯m (166) and contains 306 atoms per unit cell. This new compound is to our knowledge the first example of a rhombohedral distortion of a (2aγ)3- superstructure of cubic γ-brass– in particular, it is closely related to Rh7Mg44. Two structures have been compared. The electronic structure of Rh8Cd43 shows that the phase is stabilized by a Hume-Rothery mechanism. The two main building units in the structure of Rh8Cd43: 38 atom modified Pierce cluster and unions of three double sphenocoronae. [Display omitted] •An ordered compound Rh8Cd43 has been synthesized in rhodium-cadmium binary system.•The structure has been characterized by X-ray diffraction experiment.•The structure is build up by icosahedra and sphenocoronae.•The structure can also be described by a combination of layers.•Electronic structure calculations show Rh8Cd43 is a Hume-Rothery compound.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2016.11.232