The material described by Sr16Cu8O23 crystallizes in the triclinic P-1 space group. There are eight inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(7), and two equivalent O(6) atoms. In the second Sr site, Sr(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form distorted SrO7 pentagonal bipyramids that share corners with two equivalent Sr(3)O6 octahedra,  a cornercorner with one Sr(2)O7 pentagonal bipyramid,  a cornercorner with one Sr(6)O7 pentagonal bipyramid,  an edgeedge with one Sr(3)O6 octahedra, edges with two equivalent Sr(7)O6 octahedra, and  an edgeedge with one Sr(5)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 5°. In the third Sr site, Sr(3) is bonded to one O(1), one O(10), one O(12), one O(2), one O(5), and one O(6) atom to form distorted SrO6 octahedra that share  a cornercorner with one Sr(7)O6 octahedra, corners with two equivalent Sr(2)O7 pentagonal bipyramids, corners with two equivalent Sr(6)O7 pentagonal bipyramids, edges with two equivalent Sr(7)O6 octahedra,  an edgeedge with one Sr(2)O7 pentagonal bipyramid,  an edgeedge with one Sr(6)O7 pentagonal bipyramid, and  a faceface with one Sr(5)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 83°. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one O(11), one O(2), one O(3), one O(7), one O(9), and two equivalent O(8) atoms. In the fifth Sr site, Sr(5) is bonded to one O(10), one O(11), one O(12), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO7 pentagonal bipyramids that share corners with two equivalent Sr(7)O6 octahedra,  an edgeedge with one Sr(2)O7 pentagonal bipyramid, edges with three equivalent Sr(6)O7 pentagonal bipyramids, and  a faceface with one Sr(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-5°. In the sixth Sr site, Sr(6) is bonded to one O(10), one O(11), one O(5), one O(7), one O(9), and two equivalent O(12) atoms to form distorted SrO7 pentagonal bipyramids that share corners with two equivalent Sr(3)O6 octahedra,  a cornercorner with one Sr(2)O7 pentagonal bipyramid,  an edgeedge with one Sr(3)O6 octahedra,  an edgeedge with one Sr(6)O7 pentagonal bipyramid, edges with three equivalent Sr(5)O7 pentagonal bipyramids, and  a faceface with one Sr(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-5°. In the seventh Sr site, Sr(7) is bonded to one O(10), one O(11), one O(2), one O(5), and two equivalent O(1) atoms to form distorted SrO6 octahedra that share  a cornercorner with one Sr(3)O6 octahedra, corners with two equivalent Sr(5)O7 pentagonal bipyramids,  an edgeedge with one Sr(7)O6 octahedra, edges with two equivalent Sr(3)O6 octahedra, edges with two equivalent Sr(2)O7 pentagonal bipyramids, and  a faceface with one Sr(6)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 83°. In the eighth Sr site, Sr(8) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(3), one O(7), one O(8), and one O(9) atom. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a T-shaped geometry to one O(1), one O(2), and one O(3) atom. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(10), one O(4), one O(5), and one O(6) atom. In the third Cu site, Cu(3) is bonded in a rectangular see-saw-like geometry to one O(3), one O(7), one O(8), and one O(9) atom. In the fourth Cu site, Cu(4) is bonded in a rectangular see-saw-like geometry to one O(10), one O(11), one O(12), and one O(9) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Sr(2), one Sr(3), one Sr(8), two equivalent Sr(7), and one Cu(1) atom to form distorted OSr5Cu octahedra that share  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(11)Sr5Cu octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(7)Sr5Cu octahedra, corners with two equivalent O(6)Sr5Cu octahedra, corners with three equivalent O(10)Sr4Cu2 octahedra,  an edgeedge with one O(1)Sr5Cu octahedra,  an edgeedge with one O(11)Sr5Cu octahedra,  an edgeedge with one O(12)Sr5Cu octahedra,  an edgeedge with one O(8)Sr5Cu octahedra, edges with two equivalent O(2)Sr5Cu octahedra, edges with two equivalent O(5)Sr5Cu octahedra, and  a faceface with one O(3)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 5-63°. In the second O site, O(2) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(7), and one Cu(1) atom to form distorted OSr5Cu octahedra that share  a cornercorner with one O(3)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(1)Sr5Cu octahedra,  a cornercorner with one O(12)Sr5Cu octahedra,  a cornercorner with one O(8)Sr5Cu octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(4)Sr4Cu2 octahedra, corners with two equivalent O(5)Sr5Cu octahedra,  an edgeedge with one O(11)Sr5Cu octahedra,  an edgeedge with one O(5)Sr5Cu octahedra,  an edgeedge with one O(7)Sr5Cu octahedra,  an edgeedge with one O(8)Sr5Cu octahedra, edges with two equivalent O(1)Sr5Cu octahedra, edges with two equivalent O(6)Sr5Cu octahedra, and  a faceface with one O(3)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 4-63°. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(8), one Cu(1), and one Cu(3) atom to form OSr4Cu2 octahedra that share  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(12)Sr5Cu octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(7)Sr5Cu octahedra, corners with two equivalent O(11)Sr5Cu octahedra, corners with two equivalent O(5)Sr5Cu octahedra, corners with two equivalent O(8)Sr5Cu octahedra, corners with three equivalent O(6)Sr5Cu octahedra,  an edgeedge with one O(4)Sr4Cu2 octahedra,  an edgeedge with one O(9)Sr4Cu2 octahedra,  a faceface with one O(1)Sr5Cu octahedra,  a faceface with one O(2)Sr5Cu octahedra,  a faceface with one O(7)Sr5Cu octahedra, and  a faceface with one O(8)Sr5Cu octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(2) atoms to form OSr4Cu2 octahedra that share corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(1)Sr5Cu octahedra, corners with two equivalent O(6)Sr5Cu octahedra, corners with two equivalent O(7)Sr5Cu octahedra, corners with two equivalent O(8)Sr5Cu octahedra, corners with four equivalent O(2)Sr5Cu octahedra, edges with two equivalent O(3)Sr4Cu2 octahedra, faces with two equivalent O(5)Sr5Cu octahedra, and faces with two equivalent O(6)Sr5Cu octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(6), one Sr(7), and one Cu(2) atom to form OSr5Cu octahedra that share  a cornercorner with one O(10)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(12)Sr5Cu octahedra,  a cornercorner with one O(6)Sr5Cu octahedra,  a cornercorner with one O(8)Sr5Cu octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr5Cu octahedra,  an edgeedge with one O(11)Sr5Cu octahedra,  an edgeedge with one O(12)Sr5Cu octahedra,  an edgeedge with one O(2)Sr5Cu octahedra,  an edgeedge with one O(7)Sr5Cu octahedra, edges with two equivalent O(1)Sr5Cu octahedra, edges with two equivalent O(6)Sr5Cu octahedra,  a faceface with one O(10)Sr4Cu2 octahedra, and  a faceface with one O(4)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the sixth O site, O(6) is bonded to one Sr(2), one Sr(3), one Sr(5), two equivalent Sr(1), and one Cu(2) atom to form OSr5Cu octahedra that share  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(11)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra,  a cornercorner with one O(7)Sr5Cu octahedra, corners with two equivalent O(1)Sr5Cu octahedra, corners with three equivalent O(3)Sr4Cu2 octahedra,  an edgeedge with one O(12)Sr5Cu octahedra,  an edgeedge with one O(6)Sr5Cu octahedra,  an edgeedge with one O(7)Sr5Cu octahedra,  an edgeedge with one O(8)Sr5Cu octahedra, edges with two equivalent O(2)Sr5Cu octahedra, edges with two equivalent O(5)Sr5Cu octahedra,  a faceface with one O(10)Sr4Cu2 octahedra, and  a faceface with one O(4)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(4), one Sr(5), one Sr(6), one Sr(8), and one Cu(3) atom to form OSr5Cu octahedra that share  a cornercorner with one O(3)Sr4Cu2 octahedra,  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(1)Sr5Cu octahedra,  a cornercorner with one O(6)Sr5Cu octahedra,  a cornercorner with one O(8)Sr5Cu octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(9)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr5Cu octahedra,  an edgeedge with one O(11)Sr5Cu octahedra,  an edgeedge with one O(2)Sr5Cu octahedra,  an edgeedge with one O(5)Sr5Cu octahedra,  an edgeedge with one O(6)Sr5Cu octahedra, edges with two equivalent O(12)Sr5Cu octahedra, edges with two equivalent O(8)Sr5Cu octahedra,  a faceface with one O(3)Sr4Cu2 octahedra, and  a faceface with one O(9)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the eighth O site, O(8) is bonded to one Sr(2), one Sr(5), one Sr(8), two equivalent Sr(4), and one Cu(3) atom to form OSr5Cu octahedra that share  a cornercorner with one O(10)Sr4Cu2 octahedra,  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra,  a cornercorner with one O(7)Sr5Cu octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(9)Sr4Cu2 octahedra, corners with two equivalent O(12)Sr5Cu octahedra,  an edgeedge with one O(1)Sr5Cu octahedra,  an edgeedge with one O(2)Sr5Cu octahedra,  an edgeedge with one O(6)Sr5Cu octahedra,  an edgeedge with one O(8)Sr5Cu octahedra, edges with two equivalent O(11)Sr5Cu octahedra, edges with two equivalent O(7)Sr5Cu octahedra,  a faceface with one O(3)Sr4Cu2 octahedra, and  a faceface with one O(9)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the ninth O site, O(9) is bonded to one Sr(4), one Sr(5), one Sr(6), one Sr(8), one Cu(3), and one Cu(4) atom to form OSr4Cu2 octahedra that share  a cornercorner with one O(10)Sr4Cu2 octahedra,  a cornercorner with one O(3)Sr4Cu2 octahedra,  a cornercorner with one O(1)Sr5Cu octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra,  a cornercorner with one O(6)Sr5Cu octahedra, corners with two equivalent O(11)Sr5Cu octahedra, corners with two equivalent O(12)Sr5Cu octahedra, corners with two equivalent O(7)Sr5Cu octahedra, corners with two equivalent O(8)Sr5Cu octahedra,  an edgeedge with one O(10)Sr4Cu2 octahedra,  an edgeedge with one O(3)Sr4Cu2 octahedra,  a faceface with one O(11)Sr5Cu octahedra,  a faceface with one O(12)Sr5Cu octahedra,  a faceface with one O(7)Sr5Cu octahedra, and  a faceface with one O(8)Sr5Cu octahedra. The corner-sharing octahedral tilt angles range from 0-63°. In the tenth O site, O(10) is bonded to one Sr(3), one Sr(5), one Sr(6), one Sr(7), one Cu(2), and one Cu(4) atom to form OSr4Cu2 octahedra that share  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(11)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra,  a cornercorner with one O(8)Sr5Cu octahedra, corners with two equivalent O(12)Sr5Cu octahedra, corners with two equivalent O(2)Sr5Cu octahedra, corners with two equivalent O(7)Sr5Cu octahedra, corners with three equivalent O(1)Sr5Cu octahedra,  an edgeedge with one O(9)Sr4Cu2 octahedra,  a faceface with one O(11)Sr5Cu octahedra,  a faceface with one O(12)Sr5Cu octahedra,  a faceface with one O(5)Sr5Cu octahedra, and  a faceface with one O(6)Sr5Cu octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the eleventh O site, O(11) is bonded to one Sr(4), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Cu(4) atom to form OSr5Cu octahedra that share  a cornercorner with one O(10)Sr4Cu2 octahedra,  a cornercorner with one O(1)Sr5Cu octahedra,  a cornercorner with one O(12)Sr5Cu octahedra,  a cornercorner with one O(6)Sr5Cu octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(9)Sr4Cu2 octahedra, corners with two equivalent O(7)Sr5Cu octahedra,  an edgeedge with one O(1)Sr5Cu octahedra,  an edgeedge with one O(2)Sr5Cu octahedra,  an edgeedge with one O(5)Sr5Cu octahedra,  an edgeedge with one O(7)Sr5Cu octahedra, edges with two equivalent O(12)Sr5Cu octahedra, edges with two equivalent O(8)Sr5Cu octahedra,  a faceface with one O(10)Sr4Cu2 octahedra, and  a faceface with one O(9)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-59°. In the twelfth O site, O(12) is bonded to one Sr(3), one Sr(5), one Sr(8), two equivalent Sr(6), and one Cu(4) atom to form OSr5Cu octahedra that share  a cornercorner with one O(3)Sr4Cu2 octahedra,  a cornercorner with one O(11)Sr5Cu octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(9)Sr4Cu2 octahedra, corners with two equivalent O(8)Sr5Cu octahedra,  an edgeedge with one O(1)Sr5Cu octahedra,  an edgeedge with one O(12)Sr5Cu octahedra,  an edgeedge with one O(5)Sr5Cu octahedra,  an edgeedge with one O(6)Sr5Cu octahedra, edges with two equivalent O(11)Sr5Cu octahedra, edges with two equivalent O(7)Sr5Cu octahedra,  a faceface with one O(10)Sr4Cu2 octahedra, and  a faceface with one O(9)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-60°. is represented by the CIF card [CIF]
data_Sr16Cu8O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.873
_cell_length_b   10.205
_cell_length_c   11.375
_cell_angle_alpha   106.437
_cell_angle_beta   98.093
_cell_angle_gamma   105.436
_symmetry_Int_Tables_number   1
_cell_volume   717.156
_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  0.280  0.991  0.375  1.0
  Sr  Sr1  1  0.844  0.136  0.375  1.0
  Sr  Sr2  1  0.341  0.641  0.371  1.0
  Sr  Sr3  1  0.405  0.115  0.126  1.0
  Sr  Sr4  1  0.595  0.885  0.874  1.0
  Sr  Sr5  1  0.467  0.760  0.124  1.0
  Sr  Sr6  1  0.906  0.613  0.123  1.0
  Sr  Sr7  1  0.793  0.490  0.371  1.0
  Sr  Sr8  1  0.969  0.259  0.125  1.0
  Sr  Sr9  1  0.031  0.741  0.875  1.0
  Sr  Sr10  1  0.533  0.240  0.876  1.0
  Sr  Sr11  1  0.207  0.510  0.629  1.0
  Sr  Sr12  1  0.659  0.359  0.629  1.0
  Sr  Sr13  1  0.094  0.387  0.877  1.0
  Sr  Sr14  1  0.720  0.009  0.625  1.0
  Sr  Sr15  1  0.156  0.864  0.625  1.0
  Cu  Cu16  1  0.321  0.320  0.380  1.0
  Cu  Cu17  1  0.812  0.813  0.376  1.0
  Cu  Cu18  1  0.934  0.935  0.124  1.0
  Cu  Cu19  1  0.438  0.437  0.127  1.0
  Cu  Cu20  1  0.679  0.680  0.620  1.0
  Cu  Cu21  1  0.562  0.563  0.873  1.0
  Cu  Cu22  1  0.188  0.187  0.624  1.0
  Cu  Cu23  1  0.066  0.065  0.876  1.0
  O  O24  1  0.103  0.402  0.385  1.0
  O  O25  1  0.553  0.253  0.385  1.0
  O  O26  1  0.117  0.118  0.246  1.0
  O  O27  1  0.000  0.000  0.500  1.0
  O  O28  1  0.048  0.737  0.375  1.0
  O  O29  1  0.580  0.894  0.375  1.0
  O  O30  1  0.167  0.856  0.122  1.0
  O  O31  1  0.700  0.013  0.124  1.0
  O  O32  1  0.750  0.751  0.000  1.0
  O  O33  1  0.626  0.626  0.253  1.0
  O  O34  1  0.673  0.359  0.126  1.0
  O  O35  1  0.203  0.515  0.125  1.0
  O  O36  1  0.327  0.641  0.874  1.0
  O  O37  1  0.797  0.485  0.875  1.0
  O  O38  1  0.374  0.374  0.747  1.0
  O  O39  1  0.250  0.249  1.000  1.0
  O  O40  1  0.897  0.598  0.615  1.0
  O  O41  1  0.833  0.144  0.878  1.0
  O  O42  1  0.300  0.987  0.876  1.0
  O  O43  1  0.420  0.106  0.625  1.0
  O  O44  1  0.952  0.263  0.625  1.0
  O  O45  1  0.883  0.882  0.754  1.0
  O  O46  1  0.447  0.747  0.615  1.0
[/CIF]
.
The material described by Sr16Cu8O23 crystallizes in the triclinic P-1 space group. There are eight inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(7), and two equivalent O(6) atoms. In the second Sr site, Sr(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form distorted SrO7 pentagonal bipyramids that share corners with two equivalent Sr(3)O6 octahedra,  a cornercorner with one Sr(2)O7 pentagonal bipyramid,  a cornercorner with one Sr(6)O7 pentagonal bipyramid,  an edgeedge with one Sr(3)O6 octahedra, edges with two equivalent Sr(7)O6 octahedra, and  an edgeedge with one Sr(5)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 5°. In the third Sr site, Sr(3) is bonded to one O(1), one O(10), one O(12), one O(2), one O(5), and one O(6) atom to form distorted SrO6 octahedra that share  a cornercorner with one Sr(7)O6 octahedra, corners with two equivalent Sr(2)O7 pentagonal bipyramids, corners with two equivalent Sr(6)O7 pentagonal bipyramids, edges with two equivalent Sr(7)O6 octahedra,  an edgeedge with one Sr(2)O7 pentagonal bipyramid,  an edgeedge with one Sr(6)O7 pentagonal bipyramid, and  a faceface with one Sr(5)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 83°. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one O(11), one O(2), one O(3), one O(7), one O(9), and two equivalent O(8) atoms. In the fifth Sr site, Sr(5) is bonded to one O(10), one O(11), one O(12), one O(6), one O(7), one O(8), and one O(9) atom to form distorted SrO7 pentagonal bipyramids that share corners with two equivalent Sr(7)O6 octahedra,  an edgeedge with one Sr(2)O7 pentagonal bipyramid, edges with three equivalent Sr(6)O7 pentagonal bipyramids, and  a faceface with one Sr(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-5°. In the sixth Sr site, Sr(6) is bonded to one O(10), one O(11), one O(5), one O(7), one O(9), and two equivalent O(12) atoms to form distorted SrO7 pentagonal bipyramids that share corners with two equivalent Sr(3)O6 octahedra,  a cornercorner with one Sr(2)O7 pentagonal bipyramid,  an edgeedge with one Sr(3)O6 octahedra,  an edgeedge with one Sr(6)O7 pentagonal bipyramid, edges with three equivalent Sr(5)O7 pentagonal bipyramids, and  a faceface with one Sr(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-5°. In the seventh Sr site, Sr(7) is bonded to one O(10), one O(11), one O(2), one O(5), and two equivalent O(1) atoms to form distorted SrO6 octahedra that share  a cornercorner with one Sr(3)O6 octahedra, corners with two equivalent Sr(5)O7 pentagonal bipyramids,  an edgeedge with one Sr(7)O6 octahedra, edges with two equivalent Sr(3)O6 octahedra, edges with two equivalent Sr(2)O7 pentagonal bipyramids, and  a faceface with one Sr(6)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 83°. In the eighth Sr site, Sr(8) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(3), one O(7), one O(8), and one O(9) atom. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a T-shaped geometry to one O(1), one O(2), and one O(3) atom. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(10), one O(4), one O(5), and one O(6) atom. In the third Cu site, Cu(3) is bonded in a rectangular see-saw-like geometry to one O(3), one O(7), one O(8), and one O(9) atom. In the fourth Cu site, Cu(4) is bonded in a rectangular see-saw-like geometry to one O(10), one O(11), one O(12), and one O(9) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Sr(2), one Sr(3), one Sr(8), two equivalent Sr(7), and one Cu(1) atom to form distorted OSr5Cu octahedra that share  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(11)Sr5Cu octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(7)Sr5Cu octahedra, corners with two equivalent O(6)Sr5Cu octahedra, corners with three equivalent O(10)Sr4Cu2 octahedra,  an edgeedge with one O(1)Sr5Cu octahedra,  an edgeedge with one O(11)Sr5Cu octahedra,  an edgeedge with one O(12)Sr5Cu octahedra,  an edgeedge with one O(8)Sr5Cu octahedra, edges with two equivalent O(2)Sr5Cu octahedra, edges with two equivalent O(5)Sr5Cu octahedra, and  a faceface with one O(3)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 5-63°. In the second O site, O(2) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(7), and one Cu(1) atom to form distorted OSr5Cu octahedra that share  a cornercorner with one O(3)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(1)Sr5Cu octahedra,  a cornercorner with one O(12)Sr5Cu octahedra,  a cornercorner with one O(8)Sr5Cu octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(4)Sr4Cu2 octahedra, corners with two equivalent O(5)Sr5Cu octahedra,  an edgeedge with one O(11)Sr5Cu octahedra,  an edgeedge with one O(5)Sr5Cu octahedra,  an edgeedge with one O(7)Sr5Cu octahedra,  an edgeedge with one O(8)Sr5Cu octahedra, edges with two equivalent O(1)Sr5Cu octahedra, edges with two equivalent O(6)Sr5Cu octahedra, and  a faceface with one O(3)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 4-63°. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), one Sr(4), one Sr(8), one Cu(1), and one Cu(3) atom to form OSr4Cu2 octahedra that share  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(12)Sr5Cu octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(7)Sr5Cu octahedra, corners with two equivalent O(11)Sr5Cu octahedra, corners with two equivalent O(5)Sr5Cu octahedra, corners with two equivalent O(8)Sr5Cu octahedra, corners with three equivalent O(6)Sr5Cu octahedra,  an edgeedge with one O(4)Sr4Cu2 octahedra,  an edgeedge with one O(9)Sr4Cu2 octahedra,  a faceface with one O(1)Sr5Cu octahedra,  a faceface with one O(2)Sr5Cu octahedra,  a faceface with one O(7)Sr5Cu octahedra, and  a faceface with one O(8)Sr5Cu octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Cu(2) atoms to form OSr4Cu2 octahedra that share corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(1)Sr5Cu octahedra, corners with two equivalent O(6)Sr5Cu octahedra, corners with two equivalent O(7)Sr5Cu octahedra, corners with two equivalent O(8)Sr5Cu octahedra, corners with four equivalent O(2)Sr5Cu octahedra, edges with two equivalent O(3)Sr4Cu2 octahedra, faces with two equivalent O(5)Sr5Cu octahedra, and faces with two equivalent O(6)Sr5Cu octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(6), one Sr(7), and one Cu(2) atom to form OSr5Cu octahedra that share  a cornercorner with one O(10)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(12)Sr5Cu octahedra,  a cornercorner with one O(6)Sr5Cu octahedra,  a cornercorner with one O(8)Sr5Cu octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(2)Sr5Cu octahedra,  an edgeedge with one O(11)Sr5Cu octahedra,  an edgeedge with one O(12)Sr5Cu octahedra,  an edgeedge with one O(2)Sr5Cu octahedra,  an edgeedge with one O(7)Sr5Cu octahedra, edges with two equivalent O(1)Sr5Cu octahedra, edges with two equivalent O(6)Sr5Cu octahedra,  a faceface with one O(10)Sr4Cu2 octahedra, and  a faceface with one O(4)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the sixth O site, O(6) is bonded to one Sr(2), one Sr(3), one Sr(5), two equivalent Sr(1), and one Cu(2) atom to form OSr5Cu octahedra that share  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(11)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra,  a cornercorner with one O(7)Sr5Cu octahedra, corners with two equivalent O(1)Sr5Cu octahedra, corners with three equivalent O(3)Sr4Cu2 octahedra,  an edgeedge with one O(12)Sr5Cu octahedra,  an edgeedge with one O(6)Sr5Cu octahedra,  an edgeedge with one O(7)Sr5Cu octahedra,  an edgeedge with one O(8)Sr5Cu octahedra, edges with two equivalent O(2)Sr5Cu octahedra, edges with two equivalent O(5)Sr5Cu octahedra,  a faceface with one O(10)Sr4Cu2 octahedra, and  a faceface with one O(4)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(4), one Sr(5), one Sr(6), one Sr(8), and one Cu(3) atom to form OSr5Cu octahedra that share  a cornercorner with one O(3)Sr4Cu2 octahedra,  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(1)Sr5Cu octahedra,  a cornercorner with one O(6)Sr5Cu octahedra,  a cornercorner with one O(8)Sr5Cu octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(9)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr5Cu octahedra,  an edgeedge with one O(11)Sr5Cu octahedra,  an edgeedge with one O(2)Sr5Cu octahedra,  an edgeedge with one O(5)Sr5Cu octahedra,  an edgeedge with one O(6)Sr5Cu octahedra, edges with two equivalent O(12)Sr5Cu octahedra, edges with two equivalent O(8)Sr5Cu octahedra,  a faceface with one O(3)Sr4Cu2 octahedra, and  a faceface with one O(9)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the eighth O site, O(8) is bonded to one Sr(2), one Sr(5), one Sr(8), two equivalent Sr(4), and one Cu(3) atom to form OSr5Cu octahedra that share  a cornercorner with one O(10)Sr4Cu2 octahedra,  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra,  a cornercorner with one O(7)Sr5Cu octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(9)Sr4Cu2 octahedra, corners with two equivalent O(12)Sr5Cu octahedra,  an edgeedge with one O(1)Sr5Cu octahedra,  an edgeedge with one O(2)Sr5Cu octahedra,  an edgeedge with one O(6)Sr5Cu octahedra,  an edgeedge with one O(8)Sr5Cu octahedra, edges with two equivalent O(11)Sr5Cu octahedra, edges with two equivalent O(7)Sr5Cu octahedra,  a faceface with one O(3)Sr4Cu2 octahedra, and  a faceface with one O(9)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the ninth O site, O(9) is bonded to one Sr(4), one Sr(5), one Sr(6), one Sr(8), one Cu(3), and one Cu(4) atom to form OSr4Cu2 octahedra that share  a cornercorner with one O(10)Sr4Cu2 octahedra,  a cornercorner with one O(3)Sr4Cu2 octahedra,  a cornercorner with one O(1)Sr5Cu octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra,  a cornercorner with one O(6)Sr5Cu octahedra, corners with two equivalent O(11)Sr5Cu octahedra, corners with two equivalent O(12)Sr5Cu octahedra, corners with two equivalent O(7)Sr5Cu octahedra, corners with two equivalent O(8)Sr5Cu octahedra,  an edgeedge with one O(10)Sr4Cu2 octahedra,  an edgeedge with one O(3)Sr4Cu2 octahedra,  a faceface with one O(11)Sr5Cu octahedra,  a faceface with one O(12)Sr5Cu octahedra,  a faceface with one O(7)Sr5Cu octahedra, and  a faceface with one O(8)Sr5Cu octahedra. The corner-sharing octahedral tilt angles range from 0-63°. In the tenth O site, O(10) is bonded to one Sr(3), one Sr(5), one Sr(6), one Sr(7), one Cu(2), and one Cu(4) atom to form OSr4Cu2 octahedra that share  a cornercorner with one O(4)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr4Cu2 octahedra,  a cornercorner with one O(11)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra,  a cornercorner with one O(8)Sr5Cu octahedra, corners with two equivalent O(12)Sr5Cu octahedra, corners with two equivalent O(2)Sr5Cu octahedra, corners with two equivalent O(7)Sr5Cu octahedra, corners with three equivalent O(1)Sr5Cu octahedra,  an edgeedge with one O(9)Sr4Cu2 octahedra,  a faceface with one O(11)Sr5Cu octahedra,  a faceface with one O(12)Sr5Cu octahedra,  a faceface with one O(5)Sr5Cu octahedra, and  a faceface with one O(6)Sr5Cu octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the eleventh O site, O(11) is bonded to one Sr(4), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Cu(4) atom to form OSr5Cu octahedra that share  a cornercorner with one O(10)Sr4Cu2 octahedra,  a cornercorner with one O(1)Sr5Cu octahedra,  a cornercorner with one O(12)Sr5Cu octahedra,  a cornercorner with one O(6)Sr5Cu octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(9)Sr4Cu2 octahedra, corners with two equivalent O(7)Sr5Cu octahedra,  an edgeedge with one O(1)Sr5Cu octahedra,  an edgeedge with one O(2)Sr5Cu octahedra,  an edgeedge with one O(5)Sr5Cu octahedra,  an edgeedge with one O(7)Sr5Cu octahedra, edges with two equivalent O(12)Sr5Cu octahedra, edges with two equivalent O(8)Sr5Cu octahedra,  a faceface with one O(10)Sr4Cu2 octahedra, and  a faceface with one O(9)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-59°. In the twelfth O site, O(12) is bonded to one Sr(3), one Sr(5), one Sr(8), two equivalent Sr(6), and one Cu(4) atom to form OSr5Cu octahedra that share  a cornercorner with one O(3)Sr4Cu2 octahedra,  a cornercorner with one O(11)Sr5Cu octahedra,  a cornercorner with one O(2)Sr5Cu octahedra,  a cornercorner with one O(5)Sr5Cu octahedra, corners with two equivalent O(10)Sr4Cu2 octahedra, corners with two equivalent O(9)Sr4Cu2 octahedra, corners with two equivalent O(8)Sr5Cu octahedra,  an edgeedge with one O(1)Sr5Cu octahedra,  an edgeedge with one O(12)Sr5Cu octahedra,  an edgeedge with one O(5)Sr5Cu octahedra,  an edgeedge with one O(6)Sr5Cu octahedra, edges with two equivalent O(11)Sr5Cu octahedra, edges with two equivalent O(7)Sr5Cu octahedra,  a faceface with one O(10)Sr4Cu2 octahedra, and  a faceface with one O(9)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-60°. is represented by the CIF card [CIF]
data_Sr16Cu8O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.873
_cell_length_b   10.205
_cell_length_c   11.375
_cell_angle_alpha   106.437
_cell_angle_beta   98.093
_cell_angle_gamma   105.436
_symmetry_Int_Tables_number   1
_cell_volume   717.156
_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  0.280  0.991  0.375  1.0
  Sr  Sr1  1  0.844  0.136  0.375  1.0
  Sr  Sr2  1  0.341  0.641  0.371  1.0
  Sr  Sr3  1  0.405  0.115  0.126  1.0
  Sr  Sr4  1  0.595  0.885  0.874  1.0
  Sr  Sr5  1  0.467  0.760  0.124  1.0
  Sr  Sr6  1  0.906  0.613  0.123  1.0
  Sr  Sr7  1  0.793  0.490  0.371  1.0
  Sr  Sr8  1  0.969  0.259  0.125  1.0
  Sr  Sr9  1  0.031  0.741  0.875  1.0
  Sr  Sr10  1  0.533  0.240  0.876  1.0
  Sr  Sr11  1  0.207  0.510  0.629  1.0
  Sr  Sr12  1  0.659  0.359  0.629  1.0
  Sr  Sr13  1  0.094  0.387  0.877  1.0
  Sr  Sr14  1  0.720  0.009  0.625  1.0
  Sr  Sr15  1  0.156  0.864  0.625  1.0
  Cu  Cu16  1  0.321  0.320  0.380  1.0
  Cu  Cu17  1  0.812  0.813  0.376  1.0
  Cu  Cu18  1  0.934  0.935  0.124  1.0
  Cu  Cu19  1  0.438  0.437  0.127  1.0
  Cu  Cu20  1  0.679  0.680  0.620  1.0
  Cu  Cu21  1  0.562  0.563  0.873  1.0
  Cu  Cu22  1  0.188  0.187  0.624  1.0
  Cu  Cu23  1  0.066  0.065  0.876  1.0
  O  O24  1  0.103  0.402  0.385  1.0
  O  O25  1  0.553  0.253  0.385  1.0
  O  O26  1  0.117  0.118  0.246  1.0
  O  O27  1  0.000  0.000  0.500  1.0
  O  O28  1  0.048  0.737  0.375  1.0
  O  O29  1  0.580  0.894  0.375  1.0
  O  O30  1  0.167  0.856  0.122  1.0
  O  O31  1  0.700  0.013  0.124  1.0
  O  O32  1  0.750  0.751  0.000  1.0
  O  O33  1  0.626  0.626  0.253  1.0
  O  O34  1  0.673  0.359  0.126  1.0
  O  O35  1  0.203  0.515  0.125  1.0
  O  O36  1  0.327  0.641  0.874  1.0
  O  O37  1  0.797  0.485  0.875  1.0
  O  O38  1  0.374  0.374  0.747  1.0
  O  O39  1  0.250  0.249  1.000  1.0
  O  O40  1  0.897  0.598  0.615  1.0
  O  O41  1  0.833  0.144  0.878  1.0
  O  O42  1  0.300  0.987  0.876  1.0
  O  O43  1  0.420  0.106  0.625  1.0
  O  O44  1  0.952  0.263  0.625  1.0
  O  O45  1  0.883  0.882  0.754  1.0
  O  O46  1  0.447  0.747  0.615  1.0
[/CIF]
.