BaSr2Y2PtCu2O10 crystallizes in the monoclinic Cm space group. Ba(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(3), two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form distorted YO7 pentagonal bipyramids that share  a faceface with one Pt(1)O6 octahedra. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. Pt(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form PtO6 octahedra that share  a faceface with one Y(1)O7 pentagonal bipyramid. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(5) atoms. In the second Cu site, Cu(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(2), and two equivalent O(6) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Ba(1), one Sr(1), one Sr(2), one Y(1), one Pt(1), and one Cu(1) atom to form distorted OBaSr2YCuPt octahedra that share corners with two equivalent O(4)Ba2SrYCuPt octahedra, corners with two equivalent O(3)BaSr2YCuPt octahedra, corners with three equivalent O(2)BaSr2YCuPt octahedra,  an edgeedge with one O(2)BaSr2YCuPt octahedra,  a faceface with one O(4)Ba2SrYCuPt octahedra,  a faceface with one O(2)BaSr2YCuPt octahedra,  a faceface with one O(3)BaSr2YCuPt octahedra, and faces with two equivalent O(1)BaSr2YCuPt octahedra. The corner-sharing octahedral tilt angles range from 1-71°. In the second O site, O(2) is bonded to one Ba(1), one Sr(1), one Sr(2), one Y(2), one Pt(1), and one Cu(2) atom to form distorted OBaSr2YCuPt octahedra that share corners with two equivalent O(4)Ba2SrYCuPt octahedra, corners with two equivalent O(3)BaSr2YCuPt octahedra, corners with three equivalent O(1)BaSr2YCuPt octahedra,  an edgeedge with one O(1)BaSr2YCuPt octahedra,  a faceface with one O(4)Ba2SrYCuPt octahedra,  a faceface with one O(1)BaSr2YCuPt octahedra,  a faceface with one O(3)BaSr2YCuPt octahedra, and faces with two equivalent O(2)BaSr2YCuPt octahedra. The corner-sharing octahedral tilt angles range from 1-71°. In the third O site, O(3) is bonded to one Ba(1), two equivalent Sr(2), one Y(1), one Pt(1), and one Cu(2) atom to form distorted OBaSr2YCuPt octahedra that share  a cornercorner with one O(4)Ba2SrYCuPt octahedra, corners with two equivalent O(3)BaSr2YCuPt octahedra, corners with four equivalent O(1)BaSr2YCuPt octahedra, corners with four equivalent O(2)BaSr2YCuPt octahedra, edges with two equivalent O(4)Ba2SrYCuPt octahedra, faces with two equivalent O(1)BaSr2YCuPt octahedra, and faces with two equivalent O(2)BaSr2YCuPt octahedra. The corner-sharing octahedral tilt angles range from 0-65°. In the fourth O site, O(4) is bonded to two equivalent Ba(1), one Sr(2), one Y(2), one Pt(1), and one Cu(1) atom to form distorted OBa2SrYCuPt octahedra that share  a cornercorner with one O(3)BaSr2YCuPt octahedra, corners with two equivalent O(4)Ba2SrYCuPt octahedra, corners with four equivalent O(1)BaSr2YCuPt octahedra, corners with four equivalent O(2)BaSr2YCuPt octahedra, edges with two equivalent O(3)BaSr2YCuPt octahedra, faces with two equivalent O(1)BaSr2YCuPt octahedra, and faces with two equivalent O(2)BaSr2YCuPt octahedra. The corner-sharing octahedral tilt angles range from 0-65°. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Sr(1), one Y(1), one Y(2), and one Cu(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Sr(1), one Y(1), one Y(2), and one Cu(2) atom.
BaSr2Y2PtCu2O10 crystallizes in the monoclinic Cm space group. Ba(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. The Ba(1)-O(3) bond length is 2.50 Å. Both Ba(1)-O(1) bond lengths are 2.85 Å. Both Ba(1)-O(2) bond lengths are 2.88 Å. Both Ba(1)-O(4) bond lengths are 2.88 Å. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. Both Sr(1)-O(1) bond lengths are 2.68 Å. Both Sr(1)-O(2) bond lengths are 2.67 Å. Both Sr(1)-O(5) bond lengths are 2.61 Å. Both Sr(1)-O(6) bond lengths are 2.60 Å. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. The Sr(2)-O(4) bond length is 2.40 Å. Both Sr(2)-O(1) bond lengths are 2.88 Å. Both Sr(2)-O(2) bond lengths are 2.82 Å. Both Sr(2)-O(3) bond lengths are 2.88 Å. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(3), two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form distorted YO7 pentagonal bipyramids that share  a faceface with one Pt(1)O6 octahedra. The Y(1)-O(3) bond length is 2.37 Å. Both Y(1)-O(1) bond lengths are 2.48 Å. Both Y(1)-O(5) bond lengths are 2.25 Å. Both Y(1)-O(6) bond lengths are 2.32 Å. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. The Y(2)-O(4) bond length is 2.38 Å. Both Y(2)-O(2) bond lengths are 2.52 Å. Both Y(2)-O(5) bond lengths are 2.33 Å. Both Y(2)-O(6) bond lengths are 2.25 Å. Pt(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form PtO6 octahedra that share  a faceface with one Y(1)O7 pentagonal bipyramid. The Pt(1)-O(3) bond length is 2.02 Å. The Pt(1)-O(4) bond length is 2.06 Å. Both Pt(1)-O(1) bond lengths are 2.06 Å. Both Pt(1)-O(2) bond lengths are 2.06 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(5) atoms. The Cu(1)-O(4) bond length is 2.54 Å. Both Cu(1)-O(1) bond lengths are 2.09 Å. Both Cu(1)-O(5) bond lengths are 1.94 Å. In the second Cu site, Cu(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(2), and two equivalent O(6) atoms. The Cu(2)-O(3) bond length is 2.54 Å. Both Cu(2)-O(2) bond lengths are 2.06 Å. Both Cu(2)-O(6) bond lengths are 1.94 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Ba(1), one Sr(1), one Sr(2), one Y(1), one Pt(1), and one Cu(1) atom to form distorted OBaSr2YCuPt octahedra that share corners with two equivalent O(4)Ba2SrYCuPt octahedra, corners with two equivalent O(3)BaSr2YCuPt octahedra, corners with three equivalent O(2)BaSr2YCuPt octahedra,  an edgeedge with one O(2)BaSr2YCuPt octahedra,  a faceface with one O(4)Ba2SrYCuPt octahedra,  a faceface with one O(2)BaSr2YCuPt octahedra,  a faceface with one O(3)BaSr2YCuPt octahedra, and faces with two equivalent O(1)BaSr2YCuPt octahedra. The corner-sharing octahedral tilt angles range from 1-71°. In the second O site, O(2) is bonded to one Ba(1), one Sr(1), one Sr(2), one Y(2), one Pt(1), and one Cu(2) atom to form distorted OBaSr2YCuPt octahedra that share corners with two equivalent O(4)Ba2SrYCuPt octahedra, corners with two equivalent O(3)BaSr2YCuPt octahedra, corners with three equivalent O(1)BaSr2YCuPt octahedra,  an edgeedge with one O(1)BaSr2YCuPt octahedra,  a faceface with one O(4)Ba2SrYCuPt octahedra,  a faceface with one O(1)BaSr2YCuPt octahedra,  a faceface with one O(3)BaSr2YCuPt octahedra, and faces with two equivalent O(2)BaSr2YCuPt octahedra. The corner-sharing octahedral tilt angles range from 1-71°. In the third O site, O(3) is bonded to one Ba(1), two equivalent Sr(2), one Y(1), one Pt(1), and one Cu(2) atom to form distorted OBaSr2YCuPt octahedra that share  a cornercorner with one O(4)Ba2SrYCuPt octahedra, corners with two equivalent O(3)BaSr2YCuPt octahedra, corners with four equivalent O(1)BaSr2YCuPt octahedra, corners with four equivalent O(2)BaSr2YCuPt octahedra, edges with two equivalent O(4)Ba2SrYCuPt octahedra, faces with two equivalent O(1)BaSr2YCuPt octahedra, and faces with two equivalent O(2)BaSr2YCuPt octahedra. The corner-sharing octahedral tilt angles range from 0-65°. In the fourth O site, O(4) is bonded to two equivalent Ba(1), one Sr(2), one Y(2), one Pt(1), and one Cu(1) atom to form distorted OBa2SrYCuPt octahedra that share  a cornercorner with one O(3)BaSr2YCuPt octahedra, corners with two equivalent O(4)Ba2SrYCuPt octahedra, corners with four equivalent O(1)BaSr2YCuPt octahedra, corners with four equivalent O(2)BaSr2YCuPt octahedra, edges with two equivalent O(3)BaSr2YCuPt octahedra, faces with two equivalent O(1)BaSr2YCuPt octahedra, and faces with two equivalent O(2)BaSr2YCuPt octahedra. The corner-sharing octahedral tilt angles range from 0-65°. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Sr(1), one Y(1), one Y(2), and one Cu(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Sr(1), one Y(1), one Y(2), and one Cu(2) atom.