The title compounds have been prepared and their structures determined. Na2AgAs crystallizes in the Na2CuAs structure type, forming infinite Ag-As-zig-zag-chains. KCuS builds up a new structure type but with similar zig-zag-chains of Cu- and S-atoms. Crystallographic data:
Na2AgAs: C2221, a= 879 ± 2 pm, 6 = 736 ± 2 pm, c = 559 ± 2 pm;
KCuS: Pna21, a = 1066 ± 2 pm, 6 = 620 ± 2 pm, c = 532 ± 2 pm.
Received: 1978-4-3
Published Online: 2014-6-2
Published in Print: 1978-7-1
© 1946 – 2014: Verlag der Zeitschrift für Naturforschung
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.