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Synthesis and Structural Characterization of the New Clathrates K₈Cd₄Ge42, Rb₈Cd₄Ge42, and Cs₈Cd₄Ge42.

ABSTRACT: 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. This and several other details of the crystal chemistry are elaborated.

SUBMITTER: Schafer MC

PROVIDER: S-EPMC5502883 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature

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Synthesis and Structural Characterization of the New Clathrates K₈Cd₄Ge42, Rb₈Cd₄Ge42, and Cs₈Cd₄Ge42.

Schäfer Marion C MC Bobev Svilen S

Materials (Basel, Switzerland) 20160325 4

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, e ...[more]

PMID: 28773361

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