Die Kristallstruktur von Ag3Co(CN)6

The crystal structure of the hexagonal Ag₃Co(CN)₆ (a = 7.03 Å, c = 7.13 Å, Z = 1) has been determined by X-ray powder methods. The structure factor calculations based on the space group D lead to a reliability index R of 0.062, the R?-value from F²-sums of systematically coinciding reflections being 0.064. The cobalt atoms are located in the position 1 a (0,0,0), the silver atoms in 3g (1/2,0,1/2;0,1/2,1/2;1/2,1/2,1/2). The carbon and nitrogen atoms occupy the position 6k. The interatomic distance are: Co-C = 1.89 Å, C-N = 1.14 Å, Ag-N = 2.06 Å. The angle C-N-Ag is 157.3º.