Er2Co2Ga crystallizes in the orthorhombic Immm space group. Er(1) is bonded in a 10-coordinate geometry to six equivalent Co(1) and four equivalent Ga(1) atoms. Co(1) is bonded in a 9-coordinate geometry to six equivalent Er(1), one Co(1), and two equivalent Ga(1) atoms. Ga(1) is bonded to eight equivalent Er(1) and four equivalent Co(1) atoms to form a mixture of face and edge-sharing GaEr8Co4 cuboctahedra.
Er2Co2Ga crystallizes in the orthorhombic Immm space group. Er(1) is bonded in a 10-coordinate geometry to six equivalent Co(1) and four equivalent Ga(1) atoms. There are two shorter (2.84 Å) and four longer (2.88 Å) Er(1)-Co(1) bond lengths. There are two shorter (3.13 Å) and two longer (3.15 Å) Er(1)-Ga(1) bond lengths. Co(1) is bonded in a 9-coordinate geometry to six equivalent Er(1), one Co(1), and two equivalent Ga(1) atoms. The Co(1)-Co(1) bond length is 2.27 Å. Both Co(1)-Ga(1) bond lengths are 2.54 Å. Ga(1) is bonded to eight equivalent Er(1) and four equivalent Co(1) atoms to form a mixture of face and edge-sharing GaEr8Co4 cuboctahedra.