Er2Ni2Ga crystallizes in the orthorhombic Immm space group. Er(1) is bonded in a 10-coordinate geometry to six equivalent Ni(1) and four equivalent Ga(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Er(1), one Ni(1), and two equivalent Ga(1) atoms. Ga(1) is bonded to eight equivalent Er(1) and four equivalent Ni(1) atoms to form a mixture of edge and face-sharing GaEr8Ni4 cuboctahedra.
Er2Ni2Ga crystallizes in the orthorhombic Immm space group. Er(1) is bonded in a 10-coordinate geometry to six equivalent Ni(1) and four equivalent Ga(1) atoms. There are two shorter (2.79 Å) and four longer (2.91 Å) Er(1)-Ni(1) bond lengths. There are two shorter (3.10 Å) and two longer (3.18 Å) Er(1)-Ga(1) bond lengths. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Er(1), one Ni(1), and two equivalent Ga(1) atoms. The Ni(1)-Ni(1) bond length is 2.46 Å. Both Ni(1)-Ga(1) bond lengths are 2.51 Å. Ga(1) is bonded to eight equivalent Er(1) and four equivalent Ni(1) atoms to form a mixture of edge and face-sharing GaEr8Ni4 cuboctahedra.