The material structure described by Sr8CrTl3(CuO5)4 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(6), one O(7), one O(8), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(2), one O(7), one O(8), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Cr(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form distorted edge-sharing CrO6 octahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(5), and two equivalent O(8) atoms. In the second Cu site, Cu(2) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms to form corner-sharing CuO6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a distorted see-saw-like geometry to two equivalent O(4) and two equivalent O(6) atoms. In the second Tl site, Tl(2) is bonded to two equivalent O(1) and four equivalent O(6) atoms to form edge-sharing TlO6 octahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Cu(1), and one Tl(2) atom. In the second O site, O(2) is bonded to two equivalent Sr(2) and two equivalent Cr(1) atoms to form distorted OSr2Cr2 tetrahedra that share corners with two equivalent O(7)Sr4Cu2 octahedra, corners with two equivalent O(8)Sr4Cu2 octahedra, corners with four equivalent O(5)Sr4Cu2 octahedra, corners with four equivalent O(2)Sr2Cr2 tetrahedra, and  an edgeedge with one O(2)Sr2Cr2 tetrahedra. The corner-sharing octahedral tilt angles range from 29-63°. In the third O site, O(3) is bonded in a distorted single-bond geometry to four equivalent Sr(2) and one Cr(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Cu(2), and one Tl(1) atom. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Cu(1), and one Cu(2) atom to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(6)Sr2Tl4 octahedra, corners with two equivalent O(5)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr2Cr2 tetrahedra, edges with two equivalent O(5)Sr4Cu2 octahedra, faces with two equivalent O(7)Sr4Cu2 octahedra, and faces with two equivalent O(8)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-45°. In the sixth O site, O(6) is bonded to two equivalent Sr(1), two equivalent Tl(1), and two equivalent Tl(2) atoms to form OSr2Tl4 octahedra that share corners with two equivalent O(6)Sr2Tl4 octahedra, corners with two equivalent O(7)Sr4Cu2 octahedra, corners with two equivalent O(8)Sr4Cu2 octahedra, corners with four equivalent O(5)Sr4Cu2 octahedra, and edges with three equivalent O(6)Sr2Tl4 octahedra. The corner-sharing octahedral tilt angles range from 0-48°. In the seventh O site, O(7) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(2) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(6)Sr2Tl4 octahedra, corners with two equivalent O(7)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr2Cr2 tetrahedra, edges with two equivalent O(8)Sr4Cu2 octahedra, and faces with four equivalent O(5)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-48°. In the eighth O site, O(8) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(1) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(6)Sr2Tl4 octahedra, corners with two equivalent O(8)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr2Cr2 tetrahedra, edges with two equivalent O(7)Sr4Cu2 octahedra, and faces with four equivalent O(5)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 12-42°. is represented by the CIF card [CIF]
data_Sr8Tl3Cr(CuO5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.791
_cell_length_b   11.791
_cell_length_c   3.703
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   99.442
_symmetry_Int_Tables_number   1
_cell_volume   507.794
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Sr  Sr0  1  0.472  0.775  0.500  1.0
  Sr  Sr1  1  0.225  0.528  0.500  1.0
  Sr  Sr2  1  0.013  0.732  0.500  1.0
  Sr  Sr3  1  0.732  0.013  0.500  1.0
  Sr  Sr4  1  0.775  0.472  0.500  1.0
  Sr  Sr5  1  0.987  0.268  0.500  1.0
  Sr  Sr6  1  0.268  0.987  0.500  1.0
  Sr  Sr7  1  0.528  0.225  0.500  1.0
  Tl  Tl8  1  0.727  0.727  0.000  1.0
  Tl  Tl9  1  0.500  0.500  0.000  1.0
  Tl  Tl10  1  0.273  0.273  0.000  1.0
  Cr  Cr11  1  0.000  0.000  0.000  1.0
  Cu  Cu12  1  0.753  0.247  0.000  1.0
  Cu  Cu13  1  0.000  0.500  0.000  1.0
  Cu  Cu14  1  0.500  0.000  0.000  1.0
  Cu  Cu15  1  0.247  0.753  0.000  1.0
  O  O16  1  0.616  0.384  0.000  1.0
  O  O17  1  0.916  0.916  0.500  1.0
  O  O18  1  0.097  0.903  0.000  1.0
  O  O19  1  0.137  0.365  0.000  1.0
  O  O20  1  0.369  0.880  0.000  1.0
  O  O21  1  0.084  0.084  0.500  1.0
  O  O22  1  0.120  0.631  0.000  1.0
  O  O23  1  0.903  0.097  0.000  1.0
  O  O24  1  0.375  0.375  0.500  1.0
  O  O25  1  0.384  0.616  0.000  1.0
  O  O26  1  0.635  0.863  0.000  1.0
  O  O27  1  0.880  0.369  0.000  1.0
  O  O28  1  0.863  0.635  0.000  1.0
  O  O29  1  0.000  0.500  0.500  1.0
  O  O30  1  0.764  0.236  0.500  1.0
  O  O31  1  0.500  0.000  0.500  1.0
  O  O32  1  0.365  0.137  0.000  1.0
  O  O33  1  0.236  0.764  0.500  1.0
  O  O34  1  0.625  0.625  0.500  1.0
  O  O35  1  0.631  0.120  0.000  1.0
[/CIF]
.
The material structure described by Sr8CrTl3(CuO5)4 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(6), one O(7), one O(8), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(2), one O(7), one O(8), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Cr(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form distorted edge-sharing CrO6 octahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(5), and two equivalent O(8) atoms. In the second Cu site, Cu(2) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms to form corner-sharing CuO6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a distorted see-saw-like geometry to two equivalent O(4) and two equivalent O(6) atoms. In the second Tl site, Tl(2) is bonded to two equivalent O(1) and four equivalent O(6) atoms to form edge-sharing TlO6 octahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Cu(1), and one Tl(2) atom. In the second O site, O(2) is bonded to two equivalent Sr(2) and two equivalent Cr(1) atoms to form distorted OSr2Cr2 tetrahedra that share corners with two equivalent O(7)Sr4Cu2 octahedra, corners with two equivalent O(8)Sr4Cu2 octahedra, corners with four equivalent O(5)Sr4Cu2 octahedra, corners with four equivalent O(2)Sr2Cr2 tetrahedra, and  an edgeedge with one O(2)Sr2Cr2 tetrahedra. The corner-sharing octahedral tilt angles range from 29-63°. In the third O site, O(3) is bonded in a distorted single-bond geometry to four equivalent Sr(2) and one Cr(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Cu(2), and one Tl(1) atom. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Cu(1), and one Cu(2) atom to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(6)Sr2Tl4 octahedra, corners with two equivalent O(5)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr2Cr2 tetrahedra, edges with two equivalent O(5)Sr4Cu2 octahedra, faces with two equivalent O(7)Sr4Cu2 octahedra, and faces with two equivalent O(8)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-45°. In the sixth O site, O(6) is bonded to two equivalent Sr(1), two equivalent Tl(1), and two equivalent Tl(2) atoms to form OSr2Tl4 octahedra that share corners with two equivalent O(6)Sr2Tl4 octahedra, corners with two equivalent O(7)Sr4Cu2 octahedra, corners with two equivalent O(8)Sr4Cu2 octahedra, corners with four equivalent O(5)Sr4Cu2 octahedra, and edges with three equivalent O(6)Sr2Tl4 octahedra. The corner-sharing octahedral tilt angles range from 0-48°. In the seventh O site, O(7) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(2) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(6)Sr2Tl4 octahedra, corners with two equivalent O(7)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr2Cr2 tetrahedra, edges with two equivalent O(8)Sr4Cu2 octahedra, and faces with four equivalent O(5)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-48°. In the eighth O site, O(8) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(1) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(6)Sr2Tl4 octahedra, corners with two equivalent O(8)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr2Cr2 tetrahedra, edges with two equivalent O(7)Sr4Cu2 octahedra, and faces with four equivalent O(5)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 12-42°. is represented by the CIF card [CIF]
data_Sr8Tl3Cr(CuO5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.791
_cell_length_b   11.791
_cell_length_c   3.703
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   99.442
_symmetry_Int_Tables_number   1
_cell_volume   507.794
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Sr  Sr0  1  0.472  0.775  0.500  1.0
  Sr  Sr1  1  0.225  0.528  0.500  1.0
  Sr  Sr2  1  0.013  0.732  0.500  1.0
  Sr  Sr3  1  0.732  0.013  0.500  1.0
  Sr  Sr4  1  0.775  0.472  0.500  1.0
  Sr  Sr5  1  0.987  0.268  0.500  1.0
  Sr  Sr6  1  0.268  0.987  0.500  1.0
  Sr  Sr7  1  0.528  0.225  0.500  1.0
  Tl  Tl8  1  0.727  0.727  0.000  1.0
  Tl  Tl9  1  0.500  0.500  0.000  1.0
  Tl  Tl10  1  0.273  0.273  0.000  1.0
  Cr  Cr11  1  0.000  0.000  0.000  1.0
  Cu  Cu12  1  0.753  0.247  0.000  1.0
  Cu  Cu13  1  0.000  0.500  0.000  1.0
  Cu  Cu14  1  0.500  0.000  0.000  1.0
  Cu  Cu15  1  0.247  0.753  0.000  1.0
  O  O16  1  0.616  0.384  0.000  1.0
  O  O17  1  0.916  0.916  0.500  1.0
  O  O18  1  0.097  0.903  0.000  1.0
  O  O19  1  0.137  0.365  0.000  1.0
  O  O20  1  0.369  0.880  0.000  1.0
  O  O21  1  0.084  0.084  0.500  1.0
  O  O22  1  0.120  0.631  0.000  1.0
  O  O23  1  0.903  0.097  0.000  1.0
  O  O24  1  0.375  0.375  0.500  1.0
  O  O25  1  0.384  0.616  0.000  1.0
  O  O26  1  0.635  0.863  0.000  1.0
  O  O27  1  0.880  0.369  0.000  1.0
  O  O28  1  0.863  0.635  0.000  1.0
  O  O29  1  0.000  0.500  0.500  1.0
  O  O30  1  0.764  0.236  0.500  1.0
  O  O31  1  0.500  0.000  0.500  1.0
  O  O32  1  0.365  0.137  0.000  1.0
  O  O33  1  0.236  0.764  0.500  1.0
  O  O34  1  0.625  0.625  0.500  1.0
  O  O35  1  0.631  0.120  0.000  1.0
[/CIF]
.