Flux growth and structure of two compounds with the EuIn2P 2 structure type, AIn2P2 (A = Ca and Sr), and a new structure type, BaIn2P2

Japheth F. Rauscher, Cathie L. Condron, Tanya Beault, Susan M. Kauzlarich, Newell Jensen, Peter Klavins, Samuel Maquilon, Zachary Fisk, Marilyn M. Olmstead

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Abstract

Single crystals of the new Zintl phases AIn2P2 [A = Ca (calcium indium phosphide), Sr (strontium indium phosphide) and Ba (barium indium phosphide)] have been synthesized from a reactive indium flux. CaIn 2P2 and SrIn2P2 are isostructural with EuIn2P2 and crystallize in the space group P6 3/mmc. The alkaline earth cations A are located at a site with m symmetry; In and P are located at sites with 3m symmetry. The structure type consists of layers of A 2+ cations separated by [In2P 2]2- anions that contain [In2P6] eclipsed ethane-like units that are further connected by shared P atoms. This yields a double layer of six-membered rings in which the In - In bonds are parallel to the c axis and to one another. BaIn2P2 crystallizes in a new structure type in the space group P21/m with Z = 4, with all atoms residing on sites of mirror symmetry. The structure contains layers of Ba2+ cations separated by [In2P2]2- layers of staggered [In2P6] units that form a mixture of four-, five- and six-membered rings. As a consequence of this more complicated layered structure, both the steric and electronic requirements of the large Ba2+ cation are met.

Original languageEnglish (US)
JournalActa Crystallographica Section C: Crystal Structure Communications
Volume65
Issue number10
DOIs
StatePublished - 2009

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Cations
Fluxes
Growth
Atoms
Strontium
Indium
Ethane
Barium
varespladib methyl
Anions
Mirrors
Earth (planet)
Single crystals
Calcium
indium phosphide

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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Flux growth and structure of two compounds with the EuIn2P 2 structure type, AIn2P2 (A = Ca and Sr), and a new structure type, BaIn2P2 . / Rauscher, Japheth F.; Condron, Cathie L.; Beault, Tanya; Kauzlarich, Susan M.; Jensen, Newell; Klavins, Peter; Maquilon, Samuel; Fisk, Zachary; Olmstead, Marilyn M.

In: Acta Crystallographica Section C: Crystal Structure Communications, Vol. 65, No. 10, 2009.

Research output: Contribution to journalArticle

Rauscher, Japheth F. ; Condron, Cathie L. ; Beault, Tanya ; Kauzlarich, Susan M. ; Jensen, Newell ; Klavins, Peter ; Maquilon, Samuel ; Fisk, Zachary ; Olmstead, Marilyn M. / Flux growth and structure of two compounds with the EuIn2P 2 structure type, AIn2P2 (A = Ca and Sr), and a new structure type, BaIn2P2 In: Acta Crystallographica Section C: Crystal Structure Communications. 2009 ; Vol. 65, No. 10.
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