TY - JOUR
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
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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U2 - 10.1021/ja055568s
DO - 10.1021/ja055568s
M3 - Article
AN - SCOPUS:27844545152
SN - 0002-7863
VL - 127
SP - 15682
EP - 15683
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 45
ER -