Fe2NiN2 crystallizes in the trigonal R-3m space group. Fe(1) is bonded to four equivalent N(1) atoms to form a mixture of corner and edge-sharing FeN4 trigonal pyramids. Ni(1) is bonded in a linear geometry to two equivalent N(1) atoms. N(1) is bonded to four equivalent Fe(1) and one Ni(1) atom to form a mixture of corner and edge-sharing NFe4Ni trigonal bipyramids.
Fe2NiN2 crystallizes in the trigonal R-3m space group. Fe(1) is bonded to four equivalent N(1) atoms to form a mixture of corner and edge-sharing FeN4 trigonal pyramids. There are three shorter (1.88 Å) and one longer (1.97 Å) Fe(1)-N(1) bond length. Ni(1) is bonded in a linear geometry to two equivalent N(1) atoms. Both Ni(1)-N(1) bond lengths are 1.81 Å. N(1) is bonded to four equivalent Fe(1) and one Ni(1) atom to form a mixture of corner and edge-sharing NFe4Ni trigonal bipyramids.