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

Schafer, Marion; Bobev, Svilen

doi:10.3390/ma9040236

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

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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 K₈Cd_3.77(7)Ge_42.23, Rb₈Cd_3.65(7)Ge_42.35, and Cs_7.80(1)Cd_3.65(6)Ge_42.35. 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:

Schafer, Marion ^[1]; Bobev, Svilen ^[1]

Univ. of Delaware, Newark, DE (United States)

Publication Date:: Fri Mar 25 00:00:00 EDT 2016

Research Org.:: Univ. of Delaware, Newark, DE (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1257968

Grant/Contract Number:: SC0008885

Resource Type:: Accepted Manuscript

Journal Name:: Materials

Additional Journal Information:: Journal Volume: 9; Journal Issue: 4; Journal ID: ISSN 1996-1944

Publisher:: MDPI

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; clathrates; type-I structure; germanium; cadmium; Zintl phases

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                    Schafer, Marion, and Bobev, Svilen. Synthesis and structural characterization of the new clathrates K8Cd4Ge42, Rb8Cd4Ge42, and Cs8Cd4Ge42.  United States: N. p., 2016. 
Web.  doi:10.3390/ma9040236.

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                    Schafer, Marion, & Bobev, Svilen. Synthesis and structural characterization of the new clathrates K8Cd4Ge42, Rb8Cd4Ge42, and Cs8Cd4Ge42.  United States.  https://doi.org/10.3390/ma9040236

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                    Schafer, Marion, and Bobev, Svilen. Fri .  
"Synthesis and structural characterization of the new clathrates K8Cd4Ge42, Rb8Cd4Ge42, and Cs8Cd4Ge42".  United States.  https://doi.org/10.3390/ma9040236.  https://www.osti.gov/servlets/purl/1257968.

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@article{osti_1257968,

  title        = {Synthesis and structural characterization of the new clathrates K8Cd4Ge42, Rb8Cd4Ge42, and Cs8Cd4Ge42},

  author       = {Schafer, Marion and Bobev, Svilen},

  abstractNote = {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.},

  doi          = {10.3390/ma9040236},

  journal      = {Materials},

  number       = 4,

  volume       = 9,

  place        = {United States},

  year         = {Fri Mar 25 00:00:00 EDT 2016},

  month        = {Fri Mar 25 00:00:00 EDT 2016}

}

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

Abstract

Citation Formats

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