Crystal structure of alkaline earth dilithium bis(nitridolithiate/ferrates(I)), Ca{Li₂[(Li₁₋ₓ,Fe,)N]₂}, x=0.30 and Sr {Li₂[(Li₁₋ₓFeₓN)]₂}, x=0.46

CaFe₀.₆iLi₃.₃₉N₂, tetragonal, I4₁/amd (No. 141), a = 3.7637(3) Å, c = 26.168(3) Å, V = 370.7 ų, Ζ = 4, Rgt(F) = 0.018, wR(F²) = 0.050, T= 293 K

Fe₀.₉₂Li₃.₀₈N₂Sr, tetragonal, I4₁/amd (No. 141), a = 3.7909(2) Å, c = 27.719(3) Å, V = 398.3 ų, Z = 4, Rgt(F) = 0.019, wR(F²) = 0.048, T= 293 K.