SmNd3(GaO3)4 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms. In the third Nd site, Nd(3) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(5), two equivalent O(7), and two equivalent O(8) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing GaO6 octahedra. The corner-sharing octahedral tilt angles range from 28-31°. In the second Ga site, Ga(2) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing GaO6 octahedra. The corner-sharing octahedral tilt angles range from 28-30°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Sm(1), one Nd(1), and two equivalent Ga(2) atoms to form distorted ONdSmGa2 tetrahedra that share corners with two equivalent O(3)Nd2Ga2 tetrahedra and corners with two equivalent O(2)NdSmGa2 tetrahedra. In the second O site, O(2) is bonded to one Sm(1), one Nd(1), and two equivalent Ga(1) atoms to form distorted ONdSmGa2 tetrahedra that share corners with two equivalent O(4)Nd2Ga2 tetrahedra and corners with two equivalent O(1)NdSmGa2 tetrahedra. In the third O site, O(3) is bonded to one Nd(2), one Nd(3), and two equivalent Ga(2) atoms to form distorted ONd2Ga2 tetrahedra that share corners with two equivalent O(4)Nd2Ga2 tetrahedra and corners with two equivalent O(1)NdSmGa2 tetrahedra. In the fourth O site, O(4) is bonded to one Nd(2), one Nd(3), and two equivalent Ga(1) atoms to form distorted ONd2Ga2 tetrahedra that share corners with two equivalent O(3)Nd2Ga2 tetrahedra and corners with two equivalent O(2)NdSmGa2 tetrahedra. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Sm(1), one Nd(1), one Nd(3), one Ga(1), and one Ga(2) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Sm(1), one Nd(1), one Nd(2), one Ga(1), and one Ga(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Nd(1), one Nd(2), one Nd(3), one Ga(1), and one Ga(2) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Sm(1), one Nd(2), one Nd(3), one Ga(1), and one Ga(2) atom.
SmNd3(GaO3)4 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms. The Sm(1)-O(1) bond length is 2.40 Å. The Sm(1)-O(2) bond length is 2.34 Å. Both Sm(1)-O(5) bond lengths are 2.55 Å. Both Sm(1)-O(6) bond lengths are 2.38 Å. Both Sm(1)-O(8) bond lengths are 2.74 Å. There are three inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. The Nd(1)-O(1) bond length is 2.37 Å. The Nd(1)-O(2) bond length is 2.45 Å. Both Nd(1)-O(5) bond lengths are 2.40 Å. Both Nd(1)-O(6) bond lengths are 2.58 Å. Both Nd(1)-O(7) bond lengths are 2.74 Å. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms. The Nd(2)-O(3) bond length is 2.45 Å. The Nd(2)-O(4) bond length is 2.36 Å. Both Nd(2)-O(6) bond lengths are 2.76 Å. Both Nd(2)-O(7) bond lengths are 2.59 Å. Both Nd(2)-O(8) bond lengths are 2.40 Å. In the third Nd site, Nd(3) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(5), two equivalent O(7), and two equivalent O(8) atoms. The Nd(3)-O(3) bond length is 2.37 Å. The Nd(3)-O(4) bond length is 2.45 Å. Both Nd(3)-O(5) bond lengths are 2.76 Å. Both Nd(3)-O(7) bond lengths are 2.40 Å. Both Nd(3)-O(8) bond lengths are 2.58 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing GaO6 octahedra. The corner-sharing octahedral tilt angles range from 28-31°. The Ga(1)-O(2) bond length is 2.01 Å. The Ga(1)-O(4) bond length is 2.02 Å. The Ga(1)-O(5) bond length is 2.03 Å. The Ga(1)-O(6) bond length is 2.01 Å. The Ga(1)-O(7) bond length is 2.03 Å. The Ga(1)-O(8) bond length is 2.01 Å. In the second Ga site, Ga(2) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form corner-sharing GaO6 octahedra. The corner-sharing octahedral tilt angles range from 28-30°. The Ga(2)-O(1) bond length is 2.01 Å. The Ga(2)-O(3) bond length is 2.02 Å. The Ga(2)-O(5) bond length is 2.01 Å. The Ga(2)-O(6) bond length is 2.04 Å. The Ga(2)-O(7) bond length is 2.00 Å. The Ga(2)-O(8) bond length is 2.04 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Sm(1), one Nd(1), and two equivalent Ga(2) atoms to form distorted ONdSmGa2 tetrahedra that share corners with two equivalent O(3)Nd2Ga2 tetrahedra and corners with two equivalent O(2)NdSmGa2 tetrahedra. In the second O site, O(2) is bonded to one Sm(1), one Nd(1), and two equivalent Ga(1) atoms to form distorted ONdSmGa2 tetrahedra that share corners with two equivalent O(4)Nd2Ga2 tetrahedra and corners with two equivalent O(1)NdSmGa2 tetrahedra. In the third O site, O(3) is bonded to one Nd(2), one Nd(3), and two equivalent Ga(2) atoms to form distorted ONd2Ga2 tetrahedra that share corners with two equivalent O(4)Nd2Ga2 tetrahedra and corners with two equivalent O(1)NdSmGa2 tetrahedra. In the fourth O site, O(4) is bonded to one Nd(2), one Nd(3), and two equivalent Ga(1) atoms to form distorted ONd2Ga2 tetrahedra that share corners with two equivalent O(3)Nd2Ga2 tetrahedra and corners with two equivalent O(2)NdSmGa2 tetrahedra. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Sm(1), one Nd(1), one Nd(3), one Ga(1), and one Ga(2) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Sm(1), one Nd(1), one Nd(2), one Ga(1), and one Ga(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Nd(1), one Nd(2), one Nd(3), one Ga(1), and one Ga(2) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Sm(1), one Nd(2), one Nd(3), one Ga(1), and one Ga(2) atom.