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Title: Synthesis and structural characterization of the new clathrates K8Cd4Ge42, Rb8Cd4Ge42, and Cs8Cd4Ge42

This paper presents results from our exploratory work in the systems K-Cd-Ge, Rb-Cd-Ge, and Cs-Cd-Ge, which yielded the novel type-I clathrates with refined compositions K8Cd3.77(7)Ge42.23, Rb8Cd3.65(7)Ge42.35, and Cs7.80(1)Cd3.65(6)Ge42.35. The three compounds represent rare examples of clathrates of germanium with the alkali metals, where a d10 element substitutes a group 14 element. The three structures, established by single-crystal X-ray diffraction, indicate that the framework-building Ge atoms are randomly substituted by Cd atoms on only one of the three possible crystallographic sites. Furthermore, this and several other details of the crystal chemistry are elaborated.
Authors:
 [1] ;  [1]
  1. Univ. of Delaware, Newark, DE (United States)
Publication Date:
OSTI Identifier:
1257968
Grant/Contract Number:
SC0008885
Type:
Accepted Manuscript
Journal Name:
Materials
Additional Journal Information:
Journal Volume: 9; Journal Issue: 4; Journal ID: ISSN 1996-1944
Publisher:
MDPI
Research Org:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY clathrates; type-I structure; germanium; cadmium; Zintl phases