Electron-precise/deficient La5-xCaxGe4 (3.4 ≤ × ≤ 3.8) and Ce5-xCaxGe4 (3.0 ≤ × ≤ 3.3): Probing low-valence electron concentrations in metal-rich Gd5Si4-type germanides

Li Ming Wu, Sang Hwan Kim, Dong Kyun Seo

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

We report for the first time the syntheses of electron-precise/deficient alloys, Ln5-xCaxGe4 (Ln = La, Ce; x = 3.37, 3.66, 3.82 for La; x = 3.00, 3.20, 3.26 for Ce), in the metal-rich R5Tt4 Zintl system (R = rare earth metal; Tt = Si, Ge). The new alloys extend the phase width from electron-rich to open-shell electron-deficient region in the metal-rich Zintl system and demonstrate possible occurrence of varied electron deficiencies in Zintl phases without structural changes, as a result of other existing structure-forming factors.

Original languageEnglish
Pages (from-to)15682-15683
Number of pages2
JournalJournal of the American Chemical Society
Volume127
Issue number45
DOIs
Publication statusPublished - Nov 16 2005

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ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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