The compound described by Sr2YCoCu2O7 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(13), one O(14), one O(5), one O(6), one O(7), two equivalent O(10), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(5), one O(8), one O(9), two equivalent O(11), and two equivalent O(4) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(12), one O(13), one O(14), one O(6), one O(7), two equivalent O(10), and two equivalent O(3) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(1), one O(12), one O(2), one O(8), one O(9), two equivalent O(11), and two equivalent O(4) atoms. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a body-centered cubic geometry to one O(1), one O(13), one O(14), one O(2), one O(6), one O(7), one O(8), and one O(9) atom. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to one O(1), one O(13), one O(14), one O(2), one O(6), one O(7), one O(8), and one O(9) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(12), one O(3), one O(4), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Cu(1)O5 square pyramid,  a cornercorner with one Cu(2)O5 square pyramid, and corners with two equivalent Co(2)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(10), one O(11), one O(12), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Cu(3)O5 square pyramid,  a cornercorner with one Cu(4)O5 square pyramid, and corners with two equivalent Co(1)O4 tetrahedra. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(13), one O(14), one O(3), one O(6), and one O(7) atom to form distorted CuO5 square pyramids that share corners with four equivalent Cu(3)O5 square pyramids and  a cornercorner with one Co(1)O4 tetrahedra. In the second Cu site, Cu(2) is bonded to one O(1), one O(2), one O(4), one O(8), and one O(9) atom to form CuO5 square pyramids that share corners with four equivalent Cu(4)O5 square pyramids and  a cornercorner with one Co(1)O4 tetrahedra. In the third Cu site, Cu(3) is bonded to one O(10), one O(13), one O(14), one O(6), and one O(7) atom to form CuO5 square pyramids that share corners with four equivalent Cu(1)O5 square pyramids and  a cornercorner with one Co(2)O4 tetrahedra. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(11), one O(2), one O(8), and one O(9) atom to form distorted CuO5 square pyramids that share corners with four equivalent Cu(2)O5 square pyramids and  a cornercorner with one Co(2)O4 tetrahedra. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded to one Sr(2), one Sr(4), one Y(1), one Y(2), one Cu(2), and one Cu(4) atom to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(14)Sr2Y2Cu2 octahedra, corners with two equivalent O(7)Sr2Y2Cu2 octahedra,  a cornercorner with one O(12)Sr2Co2 tetrahedra,  a cornercorner with one O(5)Sr2Co2 tetrahedra, and faces with two equivalent O(8)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), one Cu(2), and one Cu(4) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), one Co(1), and one Cu(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Sr(4), one Co(1), and one Cu(2) atom. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Co(1), and one Co(2) atom to form distorted OSr2Co2 tetrahedra that share  a cornercorner with one O(1)Sr2Y2Cu2 octahedra,  a cornercorner with one O(14)Sr2Y2Cu2 octahedra,  a cornercorner with one O(7)Sr2Y2Cu2 octahedra,  a cornercorner with one O(8)Sr2Y2Cu2 octahedra, and corners with two equivalent O(12)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 50-68°. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), one Cu(1), and one Cu(3) atom. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(3), one Y(1), one Y(2), one Cu(1), and one Cu(3) atom to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(1)Sr2Y2Cu2 octahedra, corners with two equivalent O(8)Sr2Y2Cu2 octahedra,  a cornercorner with one O(12)Sr2Co2 tetrahedra,  a cornercorner with one O(5)Sr2Co2 tetrahedra, and faces with two equivalent O(14)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the eighth O site, O(8) is bonded to one Sr(2), one Sr(4), one Y(1), one Y(2), one Cu(2), and one Cu(4) atom to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(14)Sr2Y2Cu2 octahedra, corners with two equivalent O(7)Sr2Y2Cu2 octahedra,  a cornercorner with one O(12)Sr2Co2 tetrahedra,  a cornercorner with one O(5)Sr2Co2 tetrahedra, and faces with two equivalent O(1)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-69°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), one Cu(2), and one Cu(4) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), one Co(2), and one Cu(3) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Sr(4), one Co(2), and one Cu(4) atom. In the twelfth O site, O(12) is bonded to one Sr(3), one Sr(4), one Co(1), and one Co(2) atom to form distorted OSr2Co2 tetrahedra that share  a cornercorner with one O(1)Sr2Y2Cu2 octahedra,  a cornercorner with one O(14)Sr2Y2Cu2 octahedra,  a cornercorner with one O(7)Sr2Y2Cu2 octahedra,  a cornercorner with one O(8)Sr2Y2Cu2 octahedra, and corners with two equivalent O(5)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 49-68°. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), one Cu(1), and one Cu(3) atom. In the fourteenth O site, O(14) is bonded to one Sr(1), one Sr(3), one Y(1), one Y(2), one Cu(1), and one Cu(3) atom to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(1)Sr2Y2Cu2 octahedra, corners with two equivalent O(8)Sr2Y2Cu2 octahedra,  a cornercorner with one O(12)Sr2Co2 tetrahedra,  a cornercorner with one O(5)Sr2Co2 tetrahedra, and faces with two equivalent O(7)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-69°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2YCoCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.423
_cell_length_b   5.506
_cell_length_c   12.188
_cell_angle_alpha   103.095
_cell_angle_beta   102.921
_cell_angle_gamma   90.065
_symmetry_Int_Tables_number   1
_cell_volume   344.953
_cell_formula_units_Z   2
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  0.150  0.162  0.305  1.0
  Sr  Sr1  1  0.344  0.360  0.695  1.0
  Sr  Sr2  1  0.649  0.643  0.305  1.0
  Sr  Sr3  1  0.846  0.840  0.695  1.0
  Y  Y4  1  0.996  0.998  1.000  1.0
  Y  Y5  1  0.497  0.498  0.000  1.0
  Co  Co6  1  0.220  0.812  0.501  1.0
  Co  Co7  1  0.718  0.193  0.499  1.0
  Cu  Cu8  1  0.072  0.572  0.148  1.0
  Cu  Cu9  1  0.424  0.924  0.850  1.0
  Cu  Cu10  1  0.572  0.073  0.149  1.0
  Cu  Cu11  1  0.926  0.426  0.854  1.0
  O  O12  1  0.187  0.190  0.869  1.0
  O  O13  1  0.181  0.693  0.878  1.0
  O  O14  1  0.205  0.632  0.354  1.0
  O  O15  1  0.345  0.788  0.651  1.0
  O  O16  1  0.362  0.137  0.501  1.0
  O  O17  1  0.303  0.302  0.121  1.0
  O  O18  1  0.318  0.808  0.130  1.0
  O  O19  1  0.691  0.181  0.871  1.0
  O  O20  1  0.683  0.680  0.877  1.0
  O  O21  1  0.693  0.216  0.350  1.0
  O  O22  1  0.848  0.371  0.646  1.0
  O  O23  1  0.863  0.868  0.499  1.0
  O  O24  1  0.804  0.316  0.123  1.0
  O  O25  1  0.818  0.818  0.130  1.0
[/CIF]
.
The compound described by Sr2YCoCu2O7 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(13), one O(14), one O(5), one O(6), one O(7), two equivalent O(10), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(5), one O(8), one O(9), two equivalent O(11), and two equivalent O(4) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(12), one O(13), one O(14), one O(6), one O(7), two equivalent O(10), and two equivalent O(3) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(1), one O(12), one O(2), one O(8), one O(9), two equivalent O(11), and two equivalent O(4) atoms. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a body-centered cubic geometry to one O(1), one O(13), one O(14), one O(2), one O(6), one O(7), one O(8), and one O(9) atom. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to one O(1), one O(13), one O(14), one O(2), one O(6), one O(7), one O(8), and one O(9) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(12), one O(3), one O(4), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Cu(1)O5 square pyramid,  a cornercorner with one Cu(2)O5 square pyramid, and corners with two equivalent Co(2)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(10), one O(11), one O(12), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Cu(3)O5 square pyramid,  a cornercorner with one Cu(4)O5 square pyramid, and corners with two equivalent Co(1)O4 tetrahedra. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(13), one O(14), one O(3), one O(6), and one O(7) atom to form distorted CuO5 square pyramids that share corners with four equivalent Cu(3)O5 square pyramids and  a cornercorner with one Co(1)O4 tetrahedra. In the second Cu site, Cu(2) is bonded to one O(1), one O(2), one O(4), one O(8), and one O(9) atom to form CuO5 square pyramids that share corners with four equivalent Cu(4)O5 square pyramids and  a cornercorner with one Co(1)O4 tetrahedra. In the third Cu site, Cu(3) is bonded to one O(10), one O(13), one O(14), one O(6), and one O(7) atom to form CuO5 square pyramids that share corners with four equivalent Cu(1)O5 square pyramids and  a cornercorner with one Co(2)O4 tetrahedra. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(11), one O(2), one O(8), and one O(9) atom to form distorted CuO5 square pyramids that share corners with four equivalent Cu(2)O5 square pyramids and  a cornercorner with one Co(2)O4 tetrahedra. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded to one Sr(2), one Sr(4), one Y(1), one Y(2), one Cu(2), and one Cu(4) atom to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(14)Sr2Y2Cu2 octahedra, corners with two equivalent O(7)Sr2Y2Cu2 octahedra,  a cornercorner with one O(12)Sr2Co2 tetrahedra,  a cornercorner with one O(5)Sr2Co2 tetrahedra, and faces with two equivalent O(8)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), one Cu(2), and one Cu(4) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), one Co(1), and one Cu(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Sr(4), one Co(1), and one Cu(2) atom. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), one Co(1), and one Co(2) atom to form distorted OSr2Co2 tetrahedra that share  a cornercorner with one O(1)Sr2Y2Cu2 octahedra,  a cornercorner with one O(14)Sr2Y2Cu2 octahedra,  a cornercorner with one O(7)Sr2Y2Cu2 octahedra,  a cornercorner with one O(8)Sr2Y2Cu2 octahedra, and corners with two equivalent O(12)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 50-68°. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), one Cu(1), and one Cu(3) atom. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(3), one Y(1), one Y(2), one Cu(1), and one Cu(3) atom to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(1)Sr2Y2Cu2 octahedra, corners with two equivalent O(8)Sr2Y2Cu2 octahedra,  a cornercorner with one O(12)Sr2Co2 tetrahedra,  a cornercorner with one O(5)Sr2Co2 tetrahedra, and faces with two equivalent O(14)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the eighth O site, O(8) is bonded to one Sr(2), one Sr(4), one Y(1), one Y(2), one Cu(2), and one Cu(4) atom to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(14)Sr2Y2Cu2 octahedra, corners with two equivalent O(7)Sr2Y2Cu2 octahedra,  a cornercorner with one O(12)Sr2Co2 tetrahedra,  a cornercorner with one O(5)Sr2Co2 tetrahedra, and faces with two equivalent O(1)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-69°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), one Cu(2), and one Cu(4) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), one Co(2), and one Cu(3) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Sr(4), one Co(2), and one Cu(4) atom. In the twelfth O site, O(12) is bonded to one Sr(3), one Sr(4), one Co(1), and one Co(2) atom to form distorted OSr2Co2 tetrahedra that share  a cornercorner with one O(1)Sr2Y2Cu2 octahedra,  a cornercorner with one O(14)Sr2Y2Cu2 octahedra,  a cornercorner with one O(7)Sr2Y2Cu2 octahedra,  a cornercorner with one O(8)Sr2Y2Cu2 octahedra, and corners with two equivalent O(5)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 49-68°. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), one Cu(1), and one Cu(3) atom. In the fourteenth O site, O(14) is bonded to one Sr(1), one Sr(3), one Y(1), one Y(2), one Cu(1), and one Cu(3) atom to form distorted OSr2Y2Cu2 octahedra that share corners with two equivalent O(1)Sr2Y2Cu2 octahedra, corners with two equivalent O(8)Sr2Y2Cu2 octahedra,  a cornercorner with one O(12)Sr2Co2 tetrahedra,  a cornercorner with one O(5)Sr2Co2 tetrahedra, and faces with two equivalent O(7)Sr2Y2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-69°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2YCoCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.423
_cell_length_b   5.506
_cell_length_c   12.188
_cell_angle_alpha   103.095
_cell_angle_beta   102.921
_cell_angle_gamma   90.065
_symmetry_Int_Tables_number   1
_cell_volume   344.953
_cell_formula_units_Z   2
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  0.150  0.162  0.305  1.0
  Sr  Sr1  1  0.344  0.360  0.695  1.0
  Sr  Sr2  1  0.649  0.643  0.305  1.0
  Sr  Sr3  1  0.846  0.840  0.695  1.0
  Y  Y4  1  0.996  0.998  1.000  1.0
  Y  Y5  1  0.497  0.498  0.000  1.0
  Co  Co6  1  0.220  0.812  0.501  1.0
  Co  Co7  1  0.718  0.193  0.499  1.0
  Cu  Cu8  1  0.072  0.572  0.148  1.0
  Cu  Cu9  1  0.424  0.924  0.850  1.0
  Cu  Cu10  1  0.572  0.073  0.149  1.0
  Cu  Cu11  1  0.926  0.426  0.854  1.0
  O  O12  1  0.187  0.190  0.869  1.0
  O  O13  1  0.181  0.693  0.878  1.0
  O  O14  1  0.205  0.632  0.354  1.0
  O  O15  1  0.345  0.788  0.651  1.0
  O  O16  1  0.362  0.137  0.501  1.0
  O  O17  1  0.303  0.302  0.121  1.0
  O  O18  1  0.318  0.808  0.130  1.0
  O  O19  1  0.691  0.181  0.871  1.0
  O  O20  1  0.683  0.680  0.877  1.0
  O  O21  1  0.693  0.216  0.350  1.0
  O  O22  1  0.848  0.371  0.646  1.0
  O  O23  1  0.863  0.868  0.499  1.0
  O  O24  1  0.804  0.316  0.123  1.0
  O  O25  1  0.818  0.818  0.130  1.0
[/CIF]
.