Synthesis of cadmium nitride Cd3N2 by thermolysis of cadmium azide Cd(N-3)(2) and crystal structure determination from X-ray powder diffraction data

摘要

Cadmium nitride Cd3N2 was obtained by thermolysis of cadmium azide Cd(N-3)(2) at 2(.)10(-6) mbar and 210 degrees C. It was obtained as a black, crystalline powder which becomes brown in air due to formation of cadmium amide Cd(NH2)(2). The crystal structure of Cd3N2 was determined from X-ray powder diffraction data and refined by the Rietveld method (Ia (3) over bar, a = 10.829(9) angstrom, V = 1270(3) angstrom(3), Z = 16, R(F-2) = 0. 1196). Cd3N2 crystallizes in the anti-bixbyite structure type and is isotypic to Ca3N2.