Eu2NiIn3 crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 12-coordinate geometry to two equivalent Ni(1), two equivalent In(3), four equivalent In(1), and four equivalent In(2) atoms. In the second Eu site, Eu(2) is bonded to four equivalent Ni(1), two equivalent In(1), two equivalent In(2), and four equivalent In(3) atoms to form a mixture of distorted face and edge-sharing EuIn8Ni4 cuboctahedra. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Eu(1), four equivalent Eu(2), one In(3), and two equivalent In(2) atoms. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 9-coordinate geometry to two equivalent Eu(2), four equivalent Eu(1), one In(2), and two equivalent In(3) atoms. In the second In site, In(2) is bonded in a 9-coordinate geometry to two equivalent Eu(2), four equivalent Eu(1), two equivalent Ni(1), and one In(1) atom. In the third In site, In(3) is bonded in a 9-coordinate geometry to two equivalent Eu(1), four equivalent Eu(2), one Ni(1), and two equivalent In(1) atoms.
Eu2NiIn3 crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 12-coordinate geometry to two equivalent Ni(1), two equivalent In(3), four equivalent In(1), and four equivalent In(2) atoms. Both Eu(1)-Ni(1) bond lengths are 3.25 Å. Both Eu(1)-In(3) bond lengths are 3.76 Å. All Eu(1)-In(1) bond lengths are 3.48 Å. All Eu(1)-In(2) bond lengths are 3.38 Å. In the second Eu site, Eu(2) is bonded to four equivalent Ni(1), two equivalent In(1), two equivalent In(2), and four equivalent In(3) atoms to form a mixture of distorted face and edge-sharing EuIn8Ni4 cuboctahedra. All Eu(2)-Ni(1) bond lengths are 3.36 Å. Both Eu(2)-In(1) bond lengths are 3.57 Å. Both Eu(2)-In(2) bond lengths are 3.21 Å. All Eu(2)-In(3) bond lengths are 3.38 Å. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Eu(1), four equivalent Eu(2), one In(3), and two equivalent In(2) atoms. The Ni(1)-In(3) bond length is 2.70 Å. Both Ni(1)-In(2) bond lengths are 2.71 Å. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 9-coordinate geometry to two equivalent Eu(2), four equivalent Eu(1), one In(2), and two equivalent In(3) atoms. The In(1)-In(2) bond length is 2.98 Å. Both In(1)-In(3) bond lengths are 2.92 Å. In the second In site, In(2) is bonded in a 9-coordinate geometry to two equivalent Eu(2), four equivalent Eu(1), two equivalent Ni(1), and one In(1) atom. In the third In site, In(3) is bonded in a 9-coordinate geometry to two equivalent Eu(1), four equivalent Eu(2), one Ni(1), and two equivalent In(1) atoms.