The material structure described by GdSr2CoCu2O7 crystallizes in the monoclinic Cm 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(1), one O(2), one O(3), one O(6), one O(7), 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(1), one O(2), one O(3), one O(6), one O(8), two equivalent O(4), and two equivalent O(5) atoms. Gd(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(7), one O(8), and two equivalent O(5) atoms to form CoO4 tetrahedra that share corners with two equivalent Cu(1)O5 square pyramids and corners with two equivalent Co(2)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(7), one O(8), and two equivalent O(4) atoms to form CoO4 tetrahedra that share corners with two equivalent Cu(2)O5 square pyramids and corners with two equivalent Co(1)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(2), one O(3), one O(5), and one O(6) atom to form CuO5 square pyramids that share corners with four equivalent Cu(2)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(3), one O(4), and one O(6) 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. There are eight inequivalent O sites. In the first O site, O(8) is bonded to two equivalent Sr(2), one Co(1), and one Co(2) atom to form distorted OSr2Co2 tetrahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra, and corners with two equivalent O(7)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 19-69°. In the second O site, O(1) is bonded to one Sr(1), one Sr(2), two equivalent Gd(1), one Cu(1), and one Cu(2) atom to form distorted OSr2Gd2Cu2 octahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra,  a cornercorner with one O(7)Sr2Co2 tetrahedra,  a cornercorner with one O(8)Sr2Co2 tetrahedra, edges with three equivalent O(6)Sr2Gd2Cu2 octahedra, faces with two equivalent O(2)Sr2Gd2Cu2 octahedra, and faces with two equivalent O(3)Sr2Gd2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the third O site, O(2) is bonded to one Sr(1), one Sr(2), two equivalent Gd(1), one Cu(1), and one Cu(2) atom to form distorted OSr2Gd2Cu2 octahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra,  a cornercorner with one O(7)Sr2Co2 tetrahedra,  a cornercorner with one O(8)Sr2Co2 tetrahedra, edges with three equivalent O(3)Sr2Gd2Cu2 octahedra, faces with two equivalent O(1)Sr2Gd2Cu2 octahedra, and faces with two equivalent O(6)Sr2Gd2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the fourth O site, O(3) is bonded to one Sr(1), one Sr(2), two equivalent Gd(1), one Cu(1), and one Cu(2) atom to form distorted OSr2Gd2Cu2 octahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra,  a cornercorner with one O(7)Sr2Co2 tetrahedra,  a cornercorner with one O(8)Sr2Co2 tetrahedra, edges with three equivalent O(2)Sr2Gd2Cu2 octahedra, faces with two equivalent O(1)Sr2Gd2Cu2 octahedra, and faces with two equivalent O(6)Sr2Gd2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the fifth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Co(2), and one Cu(2) atom. In the sixth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Co(1), and one Cu(1) atom. In the seventh O site, O(6) is bonded to one Sr(1), one Sr(2), two equivalent Gd(1), one Cu(1), and one Cu(2) atom to form distorted OSr2Gd2Cu2 octahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra,  a cornercorner with one O(7)Sr2Co2 tetrahedra,  a cornercorner with one O(8)Sr2Co2 tetrahedra, edges with three equivalent O(1)Sr2Gd2Cu2 octahedra, faces with two equivalent O(2)Sr2Gd2Cu2 octahedra, and faces with two equivalent O(3)Sr2Gd2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the eighth O site, O(7) is bonded to two equivalent Sr(1), one Co(1), and one Co(2) atom to form distorted OSr2Co2 tetrahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra, and corners with two equivalent O(8)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 20-69°. is represented by the CIF file [CIF]
data_Sr2GdCoCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.463
_cell_length_b   5.533
_cell_length_c   12.156
_cell_angle_alpha   103.161
_cell_angle_beta   102.987
_cell_angle_gamma   89.992
_symmetry_Int_Tables_number   1
_cell_volume   348.141
_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  0.850  0.836  0.695  1.0
  Sr  Sr1  1  0.155  0.164  0.305  1.0
  Sr  Sr2  1  0.349  0.359  0.695  1.0
  Sr  Sr3  1  0.655  0.641  0.305  1.0
  Gd  Gd4  1  0.502  0.500  1.000  1.0
  Gd  Gd5  1  0.002  0.000  0.000  1.0
  Co  Co6  1  0.720  0.188  0.500  1.0
  Co  Co7  1  0.219  0.812  0.500  1.0
  Cu  Cu8  1  0.931  0.427  0.855  1.0
  Cu  Cu9  1  0.431  0.928  0.855  1.0
  Cu  Cu10  1  0.076  0.573  0.145  1.0
  Cu  Cu11  1  0.576  0.072  0.145  1.0
  O  O12  1  0.687  0.183  0.867  1.0
  O  O13  1  0.315  0.311  0.126  1.0
  O  O14  1  0.820  0.817  0.132  1.0
  O  O15  1  0.199  0.636  0.351  1.0
  O  O16  1  0.850  0.364  0.648  1.0
  O  O17  1  0.188  0.689  0.874  1.0
  O  O18  1  0.188  0.184  0.868  1.0
  O  O19  1  0.870  0.871  0.500  1.0
  O  O20  1  0.688  0.685  0.874  1.0
  O  O21  1  0.371  0.128  0.500  1.0
  O  O22  1  0.814  0.315  0.126  1.0
  O  O23  1  0.701  0.216  0.352  1.0
  O  O24  1  0.320  0.816  0.133  1.0
  O  O25  1  0.347  0.785  0.649  1.0
[/CIF]
.
The material structure described by GdSr2CoCu2O7 crystallizes in the monoclinic Cm 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(1), one O(2), one O(3), one O(6), one O(7), 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(1), one O(2), one O(3), one O(6), one O(8), two equivalent O(4), and two equivalent O(5) atoms. Gd(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(7), one O(8), and two equivalent O(5) atoms to form CoO4 tetrahedra that share corners with two equivalent Cu(1)O5 square pyramids and corners with two equivalent Co(2)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(7), one O(8), and two equivalent O(4) atoms to form CoO4 tetrahedra that share corners with two equivalent Cu(2)O5 square pyramids and corners with two equivalent Co(1)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(2), one O(3), one O(5), and one O(6) atom to form CuO5 square pyramids that share corners with four equivalent Cu(2)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(3), one O(4), and one O(6) 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. There are eight inequivalent O sites. In the first O site, O(8) is bonded to two equivalent Sr(2), one Co(1), and one Co(2) atom to form distorted OSr2Co2 tetrahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra, and corners with two equivalent O(7)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 19-69°. In the second O site, O(1) is bonded to one Sr(1), one Sr(2), two equivalent Gd(1), one Cu(1), and one Cu(2) atom to form distorted OSr2Gd2Cu2 octahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra,  a cornercorner with one O(7)Sr2Co2 tetrahedra,  a cornercorner with one O(8)Sr2Co2 tetrahedra, edges with three equivalent O(6)Sr2Gd2Cu2 octahedra, faces with two equivalent O(2)Sr2Gd2Cu2 octahedra, and faces with two equivalent O(3)Sr2Gd2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the third O site, O(2) is bonded to one Sr(1), one Sr(2), two equivalent Gd(1), one Cu(1), and one Cu(2) atom to form distorted OSr2Gd2Cu2 octahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra,  a cornercorner with one O(7)Sr2Co2 tetrahedra,  a cornercorner with one O(8)Sr2Co2 tetrahedra, edges with three equivalent O(3)Sr2Gd2Cu2 octahedra, faces with two equivalent O(1)Sr2Gd2Cu2 octahedra, and faces with two equivalent O(6)Sr2Gd2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the fourth O site, O(3) is bonded to one Sr(1), one Sr(2), two equivalent Gd(1), one Cu(1), and one Cu(2) atom to form distorted OSr2Gd2Cu2 octahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra,  a cornercorner with one O(7)Sr2Co2 tetrahedra,  a cornercorner with one O(8)Sr2Co2 tetrahedra, edges with three equivalent O(2)Sr2Gd2Cu2 octahedra, faces with two equivalent O(1)Sr2Gd2Cu2 octahedra, and faces with two equivalent O(6)Sr2Gd2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the fifth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Co(2), and one Cu(2) atom. In the sixth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Co(1), and one Cu(1) atom. In the seventh O site, O(6) is bonded to one Sr(1), one Sr(2), two equivalent Gd(1), one Cu(1), and one Cu(2) atom to form distorted OSr2Gd2Cu2 octahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra,  a cornercorner with one O(7)Sr2Co2 tetrahedra,  a cornercorner with one O(8)Sr2Co2 tetrahedra, edges with three equivalent O(1)Sr2Gd2Cu2 octahedra, faces with two equivalent O(2)Sr2Gd2Cu2 octahedra, and faces with two equivalent O(3)Sr2Gd2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the eighth O site, O(7) is bonded to two equivalent Sr(1), one Co(1), and one Co(2) atom to form distorted OSr2Co2 tetrahedra that share corners with two equivalent O(1)Sr2Gd2Cu2 octahedra, corners with two equivalent O(2)Sr2Gd2Cu2 octahedra, corners with two equivalent O(3)Sr2Gd2Cu2 octahedra, corners with two equivalent O(6)Sr2Gd2Cu2 octahedra, and corners with two equivalent O(8)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 20-69°. is represented by the CIF file [CIF]
data_Sr2GdCoCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.463
_cell_length_b   5.533
_cell_length_c   12.156
_cell_angle_alpha   103.161
_cell_angle_beta   102.987
_cell_angle_gamma   89.992
_symmetry_Int_Tables_number   1
_cell_volume   348.141
_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  0.850  0.836  0.695  1.0
  Sr  Sr1  1  0.155  0.164  0.305  1.0
  Sr  Sr2  1  0.349  0.359  0.695  1.0
  Sr  Sr3  1  0.655  0.641  0.305  1.0
  Gd  Gd4  1  0.502  0.500  1.000  1.0
  Gd  Gd5  1  0.002  0.000  0.000  1.0
  Co  Co6  1  0.720  0.188  0.500  1.0
  Co  Co7  1  0.219  0.812  0.500  1.0
  Cu  Cu8  1  0.931  0.427  0.855  1.0
  Cu  Cu9  1  0.431  0.928  0.855  1.0
  Cu  Cu10  1  0.076  0.573  0.145  1.0
  Cu  Cu11  1  0.576  0.072  0.145  1.0
  O  O12  1  0.687  0.183  0.867  1.0
  O  O13  1  0.315  0.311  0.126  1.0
  O  O14  1  0.820  0.817  0.132  1.0
  O  O15  1  0.199  0.636  0.351  1.0
  O  O16  1  0.850  0.364  0.648  1.0
  O  O17  1  0.188  0.689  0.874  1.0
  O  O18  1  0.188  0.184  0.868  1.0
  O  O19  1  0.870  0.871  0.500  1.0
  O  O20  1  0.688  0.685  0.874  1.0
  O  O21  1  0.371  0.128  0.500  1.0
  O  O22  1  0.814  0.315  0.126  1.0
  O  O23  1  0.701  0.216  0.352  1.0
  O  O24  1  0.320  0.816  0.133  1.0
  O  O25  1  0.347  0.785  0.649  1.0
[/CIF]
.