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Article
Ordered BaAl4-Type Variants in the BaAuxSn4–x System: A Unified View on Their Phase Stabilities versus Valence Electron Counts
Inorganic Chemistry
  • Qisheng Lin, Ames Laboratory
  • Gordon J. Miller, Iowa State University
  • John D. Corbett, Iowa State University
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2014
DOI
10.1021/ic402991d
Abstract
Three ordered structures of the tetragonal BaAl4 type were identified in the Ba–Au–Sn system, from which a unified view of the interplay between the valence electron counts (VECs) and phase stabilities of these three types of derivatives can be developed. The BaNiSn3 (I4mm), ThCr2Si2 (I4/mmm), and CaBe2Ge2 (P4/nmm) type BaAuxSn4–x phases occurred respectively at x = 0.78(1)–1, 1.38(1)–1.47(1), and 1.52(1)–2.17(1), consistent with theoretical atomic “coloring” analyses that reveal an optimal VEC of ∼14 for the ThCr2Si2 type but larger and smaller values respectively for the BaNiSn3- and CaBe2Ge2-type structures.
Comments

Reprinted (adapted) with permission from Inorg. Chem., 2014, 53 (12), pp 5875–5877. Copyright 2014 American Chemical Society.

Copyright Owner
American Chemical Society
Language
en
File Format
application/pdf
Citation Information
Qisheng Lin, Gordon J. Miller and John D. Corbett. "Ordered BaAl4-Type Variants in the BaAuxSn4–x System: A Unified View on Their Phase Stabilities versus Valence Electron Counts" Inorganic Chemistry Vol. 53 Iss. 12 (2014) p. 5875 - 5877
Available at: http://works.bepress.com/gordon-miller/74/