Sr3NdCuRuO8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Nd(1) is bonded in a 9-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Ru(1) is bonded to one O(3), one O(4), and four equivalent O(1) atoms to form RuO6 octahedra that share corners with four equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 9°. Cu(1) is bonded to one O(2), one O(5), and four equivalent O(1) atoms to form CuO6 octahedra that share corners with four equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 9°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(2), one Sr(3), one Nd(1), one Ru(1), and one Cu(1) atom to form distorted OSr3NdCuRu octahedra that share corners with two equivalent O(1)Sr3NdCuRu octahedra, corners with three equivalent O(2)Sr3Nd2Cu octahedra, corners with three equivalent O(3)Sr3Nd2Ru octahedra, corners with three equivalent O(5)Sr4NdCu octahedra, corners with three equivalent O(4)Sr5Ru octahedra, edges with two equivalent O(1)Sr3NdCuRu octahedra,  a faceface with one O(2)Sr3Nd2Cu octahedra,  a faceface with one O(3)Sr3Nd2Ru octahedra,  a faceface with one O(5)Sr4NdCu octahedra,  a faceface with one O(4)Sr5Ru octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 8-56°. In the second O site, O(2) is bonded to one Sr(2), two equivalent Sr(3), two equivalent Nd(1), and one Cu(1) atom to form distorted OSr3Nd2Cu octahedra that share  a cornercorner with one O(5)Sr4NdCu octahedra, corners with four equivalent O(2)Sr3Nd2Cu octahedra, corners with twelve equivalent O(1)Sr3NdCuRu octahedra, edges with two equivalent O(5)Sr4NdCu octahedra, edges with two equivalent O(4)Sr5Ru octahedra, edges with four equivalent O(3)Sr3Nd2Ru octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the third O site, O(3) is bonded to one Sr(1), two equivalent Sr(3), two equivalent Nd(1), and one Ru(1) atom to form distorted OSr3Nd2Ru octahedra that share  a cornercorner with one O(4)Sr5Ru octahedra, corners with four equivalent O(3)Sr3Nd2Ru octahedra, corners with twelve equivalent O(1)Sr3NdCuRu octahedra, edges with two equivalent O(5)Sr4NdCu octahedra, edges with two equivalent O(4)Sr5Ru octahedra, edges with four equivalent O(2)Sr3Nd2Cu octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fourth O site, O(4) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Sr(2), and one Ru(1) atom to form distorted OSr5Ru octahedra that share  a cornercorner with one O(3)Sr3Nd2Ru octahedra, corners with four equivalent O(4)Sr5Ru octahedra, corners with twelve equivalent O(1)Sr3NdCuRu octahedra, edges with two equivalent O(2)Sr3Nd2Cu octahedra, edges with two equivalent O(3)Sr3Nd2Ru octahedra, edges with four equivalent O(5)Sr4NdCu octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 0-56°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Nd(1), and one Cu(1) atom to form distorted OSr4NdCu octahedra that share  a cornercorner with one O(2)Sr3Nd2Cu octahedra, corners with four equivalent O(5)Sr4NdCu octahedra, corners with twelve equivalent O(1)Sr3NdCuRu octahedra, edges with two equivalent O(2)Sr3Nd2Cu octahedra, edges with two equivalent O(3)Sr3Nd2Ru octahedra, edges with four equivalent O(4)Sr5Ru octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 0-54°.
Sr3NdCuRuO8 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. The Sr(1)-O(3) bond length is 2.42 Å. Both Sr(1)-O(4) bond lengths are 2.79 Å. Both Sr(1)-O(5) bond lengths are 2.81 Å. All Sr(1)-O(1) bond lengths are 2.76 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. The Sr(2)-O(2) bond length is 2.37 Å. Both Sr(2)-O(4) bond lengths are 2.78 Å. Both Sr(2)-O(5) bond lengths are 2.81 Å. All Sr(2)-O(1) bond lengths are 2.71 Å. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. The Sr(3)-O(4) bond length is 2.48 Å. Both Sr(3)-O(2) bond lengths are 2.79 Å. Both Sr(3)-O(3) bond lengths are 2.80 Å. All Sr(3)-O(1) bond lengths are 2.63 Å. Nd(1) is bonded in a 9-coordinate geometry to one O(5), two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. The Nd(1)-O(5) bond length is 2.31 Å. Both Nd(1)-O(2) bond lengths are 2.81 Å. Both Nd(1)-O(3) bond lengths are 2.79 Å. All Nd(1)-O(1) bond lengths are 2.53 Å. Ru(1) is bonded to one O(3), one O(4), and four equivalent O(1) atoms to form RuO6 octahedra that share corners with four equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 9°. The Ru(1)-O(3) bond length is 2.10 Å. The Ru(1)-O(4) bond length is 1.97 Å. All Ru(1)-O(1) bond lengths are 1.94 Å. Cu(1) is bonded to one O(2), one O(5), and four equivalent O(1) atoms to form CuO6 octahedra that share corners with four equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 9°. The Cu(1)-O(2) bond length is 2.14 Å. The Cu(1)-O(5) bond length is 2.17 Å. All Cu(1)-O(1) bond lengths are 2.00 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(2), one Sr(3), one Nd(1), one Ru(1), and one Cu(1) atom to form distorted OSr3NdCuRu octahedra that share corners with two equivalent O(1)Sr3NdCuRu octahedra, corners with three equivalent O(2)Sr3Nd2Cu octahedra, corners with three equivalent O(3)Sr3Nd2Ru octahedra, corners with three equivalent O(5)Sr4NdCu octahedra, corners with three equivalent O(4)Sr5Ru octahedra, edges with two equivalent O(1)Sr3NdCuRu octahedra,  a faceface with one O(2)Sr3Nd2Cu octahedra,  a faceface with one O(3)Sr3Nd2Ru octahedra,  a faceface with one O(5)Sr4NdCu octahedra,  a faceface with one O(4)Sr5Ru octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 8-56°. In the second O site, O(2) is bonded to one Sr(2), two equivalent Sr(3), two equivalent Nd(1), and one Cu(1) atom to form distorted OSr3Nd2Cu octahedra that share  a cornercorner with one O(5)Sr4NdCu octahedra, corners with four equivalent O(2)Sr3Nd2Cu octahedra, corners with twelve equivalent O(1)Sr3NdCuRu octahedra, edges with two equivalent O(5)Sr4NdCu octahedra, edges with two equivalent O(4)Sr5Ru octahedra, edges with four equivalent O(3)Sr3Nd2Ru octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 0-53°. In the third O site, O(3) is bonded to one Sr(1), two equivalent Sr(3), two equivalent Nd(1), and one Ru(1) atom to form distorted OSr3Nd2Ru octahedra that share  a cornercorner with one O(4)Sr5Ru octahedra, corners with four equivalent O(3)Sr3Nd2Ru octahedra, corners with twelve equivalent O(1)Sr3NdCuRu octahedra, edges with two equivalent O(5)Sr4NdCu octahedra, edges with two equivalent O(4)Sr5Ru octahedra, edges with four equivalent O(2)Sr3Nd2Cu octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 0-52°. In the fourth O site, O(4) is bonded to one Sr(3), two equivalent Sr(1), two equivalent Sr(2), and one Ru(1) atom to form distorted OSr5Ru octahedra that share  a cornercorner with one O(3)Sr3Nd2Ru octahedra, corners with four equivalent O(4)Sr5Ru octahedra, corners with twelve equivalent O(1)Sr3NdCuRu octahedra, edges with two equivalent O(2)Sr3Nd2Cu octahedra, edges with two equivalent O(3)Sr3Nd2Ru octahedra, edges with four equivalent O(5)Sr4NdCu octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 0-56°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Nd(1), and one Cu(1) atom to form distorted OSr4NdCu octahedra that share  a cornercorner with one O(2)Sr3Nd2Cu octahedra, corners with four equivalent O(5)Sr4NdCu octahedra, corners with twelve equivalent O(1)Sr3NdCuRu octahedra, edges with two equivalent O(2)Sr3Nd2Cu octahedra, edges with two equivalent O(3)Sr3Nd2Ru octahedra, edges with four equivalent O(4)Sr5Ru octahedra, and faces with four equivalent O(1)Sr3NdCuRu octahedra. The corner-sharing octahedral tilt angles range from 0-54°.