Zur kenntnis der ternären aluminide Ba5Cu1,9Al3,1, BaAg2,4Al2,6, Ba16Ag7Al27 und Ba3Ag14,6Al6,4

Add time:08/14/2019    Source:sciencedirect.com

ZusammenfassungIn der Kristallstruktur von Ba5Cu1,9Al3,1 (R3m; a = 614,0(4) pm, c = 3728,1(9) pm, Z = 3) sind durch Bariumatome separierte Cu/Al-Kagomé-Netze ausgebildet. BaAg2,4Al2,6 (Cmcm; a = 1102,6(4) pm, b = 872,3(3) pm, c = 552,0(3) pm, Z = 4) kristallisiert als ternäre Variante des BaZn5-Typs. In den Kristallstrukturen von Ba16Ag7Al27 (P21n; a = 618,2(5) pm, b = 2004,1(8) pm, c = 1060,1(6) pm, β = 90,1(3)°, Z = 1) und Ba3Ag14,6Al6,4 (P62m; a = 891,3(7) pm, c = 727,8(6) pm, Z = 1) liegen Fragmente von Ag/Al-Kagomé-Netzen neben tetraedrisch koordinierten Ag/Al-Atomen vor.

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