Ca3Ag1+xGe3-x (x=1/3): New Transition Metal Zintl Phase with Intergrowth Structure and Alloying with Aluminum Metal
(2013) In Zeitschrift für Anorganische und Allgemeine Chemie 639(1). p.35-40- Abstract
- The ternary Zintl phase Ca3Ag1+xGe3x (x = 1/3) was synthesized by the high-temperature solid-state technique and its crystal structure was refined from single-crystal diffraction data. The compound Ca3Ag1.32Ge2.68(1) adopts the Sc3NiSi3 type structure, crystal data: space group C2/m, a = 10.813(1) angstrom, b = 4.5346(4) angstrom, c = 14.3391(7) angstrom, beta = 110.05(1)degrees and V = 660.48(10) angstrom 3 for Z = 4. Its structure can be interpreted as an intergrowth of fragments cut from the CaGe (CrB-type) and the CaAg1+xGe1x (TiNiSi-type) structures, and it therefore represents an alkaline-earth member of the structure series with the general formula R2+nT2X2+n with n = 4. Unlike the rare-earth homologues that are fully ordered... (More)
- The ternary Zintl phase Ca3Ag1+xGe3x (x = 1/3) was synthesized by the high-temperature solid-state technique and its crystal structure was refined from single-crystal diffraction data. The compound Ca3Ag1.32Ge2.68(1) adopts the Sc3NiSi3 type structure, crystal data: space group C2/m, a = 10.813(1) angstrom, b = 4.5346(4) angstrom, c = 14.3391(7) angstrom, beta = 110.05(1)degrees and V = 660.48(10) angstrom 3 for Z = 4. Its structure can be interpreted as an intergrowth of fragments cut from the CaGe (CrB-type) and the CaAg1+xGe1x (TiNiSi-type) structures, and it therefore represents an alkaline-earth member of the structure series with the general formula R2+nT2X2+n with n = 4. Unlike the rare-earth homologues that are fully ordered phases, one seventh of the atomic sites in the unit cell of the title compound are mixed occupied (roughly 2/3Ge and 1/3Ag), and this can be explained by the Zintl concept. The alloying of this phase using aluminum metal yielded the isotypic solid solution Ca3(Ag/Al)1+xGe3x, in which the aluminum for silver substitution is strictly localized in the TiNiSi substructure, revealing the very different functionality of the two building blocks. (Less)
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https://lup.lub.lu.se/record/3590917
- author
- Ponou, Simeon LU and Lidin, Sven LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Intergrowth structure, Zintl phases, Silver, Germanide
- in
- Zeitschrift für Anorganische und Allgemeine Chemie
- volume
- 639
- issue
- 1
- pages
- 35 - 40
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000313874700007
- scopus:84872296780
- ISSN
- 0044-2313
- DOI
- 10.1002/zaac.201200364
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)
- id
- 476bbad7-3379-45f1-b02a-41897bb17fd4 (old id 3590917)
- date added to LUP
- 2016-04-01 12:53:28
- date last changed
- 2022-01-27 08:07:10
@article{476bbad7-3379-45f1-b02a-41897bb17fd4, abstract = {{The ternary Zintl phase Ca3Ag1+xGe3x (x = 1/3) was synthesized by the high-temperature solid-state technique and its crystal structure was refined from single-crystal diffraction data. The compound Ca3Ag1.32Ge2.68(1) adopts the Sc3NiSi3 type structure, crystal data: space group C2/m, a = 10.813(1) angstrom, b = 4.5346(4) angstrom, c = 14.3391(7) angstrom, beta = 110.05(1)degrees and V = 660.48(10) angstrom 3 for Z = 4. Its structure can be interpreted as an intergrowth of fragments cut from the CaGe (CrB-type) and the CaAg1+xGe1x (TiNiSi-type) structures, and it therefore represents an alkaline-earth member of the structure series with the general formula R2+nT2X2+n with n = 4. Unlike the rare-earth homologues that are fully ordered phases, one seventh of the atomic sites in the unit cell of the title compound are mixed occupied (roughly 2/3Ge and 1/3Ag), and this can be explained by the Zintl concept. The alloying of this phase using aluminum metal yielded the isotypic solid solution Ca3(Ag/Al)1+xGe3x, in which the aluminum for silver substitution is strictly localized in the TiNiSi substructure, revealing the very different functionality of the two building blocks.}}, author = {{Ponou, Simeon and Lidin, Sven}}, issn = {{0044-2313}}, keywords = {{Intergrowth structure; Zintl phases; Silver; Germanide}}, language = {{eng}}, number = {{1}}, pages = {{35--40}}, publisher = {{Wiley-Blackwell}}, series = {{Zeitschrift für Anorganische und Allgemeine Chemie}}, title = {{Ca3Ag1+xGe3-x (x=1/3): New Transition Metal Zintl Phase with Intergrowth Structure and Alloying with Aluminum Metal}}, url = {{http://dx.doi.org/10.1002/zaac.201200364}}, doi = {{10.1002/zaac.201200364}}, volume = {{639}}, year = {{2013}}, }