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

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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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Metals
Electrons
Rare Earth Metals
Rare earths

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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title = "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",
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.",
author = "Wu, {Li Ming} and Kim, {Sang Hwan} and Seo, {Dong Kyun}",
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T1 - Electron-precise/deficient La5-xCaxGe4 (3.4 ≤ × ≤ 3.8) and Ce5-xCaxGe4 (3.0 ≤ × ≤ 3.3)

T2 - Probing low-valence electron concentrations in metal-rich Gd5Si4-type germanides

AU - Wu, Li Ming

AU - Kim, Sang Hwan

AU - Seo, Dong Kyun

PY - 2005/11/16

Y1 - 2005/11/16

N2 - 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.

AB - 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.

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