[Er14(C2)2(N)2]l24 (triclinic, P1̅, a = 966.3(4) pm. b = 1027.6(2) pm. c = 1663.4(4) pm, α = 101.374(9)°, β = 92.853(14)°, γ = 112.83(2)°, Z = 2) is obtained as red-brown single crystals through a conproportionation reaction of Erl3 and erbium in the presence of carbon and NaN3 in a sealed niobium container. It contains discrete, tetrameric [Er14(C2)2(N)2] clusters that are built from two octahedra and two tetrahedra connected via common edges. The octahedral voids are filled with C2 units and the tetrahedral voids with N atoms. Each discrete [Er14(C2)2(N)2] cluster is surrounded by 32 iodide ligands which connect six clusters via i-a and a-a bridges.