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Non-isovalent substitution in a Zintl phase with the TiNiSi type structure, CaMg1-xAgxGe [x=0.13 (3)]
Stockholm University, Faculty of Science, Department of Physical, Inorganic and Structural Chemistry, Inorganic Chemistry.
2009 (English)In: Acta Crystallographica Section E: Structure Reports Online, ISSN 1600-5368, E-ISSN 1600-5368, Vol. 65, i90-U56 p.Article in journal (Refereed) Published
Abstract [en]

Single crystals of the title Ag-substituted calcium magnesium germanide, CaMg1-xAgxGe [x = 0.13 (3)] were obtained from the reaction of the corresponding elements at high temperature. The compound crystallizes with the TiNiSi structure type (Pearson code oP12) and represents an Ag-substituted derivative of the Zintl phase CaMgGe in which a small fraction of the divalent Mg atoms have been replaced by monovalent Ag atoms. All three atoms in the asymmetric unit (Ca, Mg/Ag, Ge) occupy special positions with the same site symmetry (.m.). Although the end member CaAgGe has been reported in an isomorphic superstructure of the same TiNiSi type, higher Ag content in solid solutions could not be achieved due to competitive formation of other, perhaps more stable, phases.

Place, publisher, year, edition, pages
2009. Vol. 65, i90-U56 p.
Keyword [en]
Crystal-structure
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:su:diva-59661DOI: 10.1107/S1600536809048454ISI: 000272244600006OAI: oai:DiVA.org:su-59661DiVA: diva2:432145
Note
authorCount :3Available from: 2011-08-01 Created: 2011-07-05 Last updated: 2017-12-08Bibliographically approved

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