The material structure described by Sr4CaYGa2(Cu2O7)2 crystallizes in the monoclinic C2 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(7), two equivalent O(4), and two equivalent O(5) atoms. Ca(1) is bonded in a body-centered cubic geometry to two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. Y(1) is bonded in a body-centered cubic geometry to two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form CuO5 square pyramids that share corners with four equivalent Cu(2)O5 square pyramids and  a cornercorner with one Ga(1)O4 tetrahedra. In the second Cu site, Cu(2) is bonded to one O(2), one O(3), one O(4), 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 Ga(1)O4 tetrahedra. Ga(1) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form GaO4 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 Ga(1)O4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Cu(1), and one Ga(1) atom. In the second O site, O(6) is bonded to one Sr(1), one Sr(2), one Ca(1), one Y(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaYCu2 octahedra that share corners with two equivalent O(6)Sr2CaYCu2 octahedra, corners with two equivalent O(7)Sr2CaYCu2 octahedra, corners with four equivalent O(2)Sr2CaYCu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra,  an edgeedge with one O(3)Sr2CaYCu2 octahedra, edges with two equivalent O(2)Sr2CaYCu2 octahedra, faces with two equivalent O(3)Sr2CaYCu2 octahedra, and faces with two equivalent O(7)Sr2CaYCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the third O site, O(7) is bonded to one Sr(1), one Sr(2), one Ca(1), one Y(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaYCu2 octahedra that share corners with two equivalent O(6)Sr2CaYCu2 octahedra, corners with two equivalent O(7)Sr2CaYCu2 octahedra, corners with four equivalent O(3)Sr2CaYCu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra,  an edgeedge with one O(2)Sr2CaYCu2 octahedra, edges with two equivalent O(3)Sr2CaYCu2 octahedra, faces with two equivalent O(2)Sr2CaYCu2 octahedra, and faces with two equivalent O(6)Sr2CaYCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the fourth O site, O(1) is bonded to one Sr(1), one Sr(2), and two equivalent Ga(1) atoms to form distorted OSr2Ga2 tetrahedra that share corners with two equivalent O(2)Sr2CaYCu2 octahedra, corners with two equivalent O(3)Sr2CaYCu2 octahedra, corners with two equivalent O(6)Sr2CaYCu2 octahedra, corners with two equivalent O(7)Sr2CaYCu2 octahedra, and corners with two equivalent O(1)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 21-68°. In the fifth O site, O(2) is bonded to one Sr(1), one Sr(2), one Ca(1), one Y(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaYCu2 octahedra that share corners with two equivalent O(2)Sr2CaYCu2 octahedra, corners with two equivalent O(3)Sr2CaYCu2 octahedra, corners with four equivalent O(6)Sr2CaYCu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra,  an edgeedge with one O(7)Sr2CaYCu2 octahedra, edges with two equivalent O(6)Sr2CaYCu2 octahedra, faces with two equivalent O(3)Sr2CaYCu2 octahedra, and faces with two equivalent O(7)Sr2CaYCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the sixth O site, O(3) is bonded to one Sr(1), one Sr(2), one Ca(1), one Y(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaYCu2 octahedra that share corners with two equivalent O(2)Sr2CaYCu2 octahedra, corners with two equivalent O(3)Sr2CaYCu2 octahedra, corners with four equivalent O(7)Sr2CaYCu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra,  an edgeedge with one O(6)Sr2CaYCu2 octahedra, edges with two equivalent O(7)Sr2CaYCu2 octahedra, faces with two equivalent O(2)Sr2CaYCu2 octahedra, and faces with two equivalent O(6)Sr2CaYCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the seventh 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 Ga(1) atom. is represented by the CIF card [CIF]
data_Sr4CaYGa2(Cu2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.239
_cell_length_b   12.239
_cell_length_c   5.502
_cell_angle_alpha   77.068
_cell_angle_beta   77.068
_cell_angle_gamma   25.468
_symmetry_Int_Tables_number   1
_cell_volume   344.907
_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  0.148  0.152  0.864  1.0
  Sr  Sr1  1  0.848  0.852  0.136  1.0
  Sr  Sr2  1  0.346  0.351  0.666  1.0
  Sr  Sr3  1  0.649  0.654  0.334  1.0
  Ca  Ca4  1  0.000  1.000  0.000  1.0
  Y  Y5  1  0.500  0.500  0.500  1.0
  Ga  Ga6  1  0.704  0.796  0.682  1.0
  Ga  Ga7  1  0.204  0.296  0.318  1.0
  Cu  Cu8  1  0.573  0.573  0.926  1.0
  Cu  Cu9  1  0.427  0.427  0.074  1.0
  Cu  Cu10  1  0.927  0.927  0.573  1.0
  Cu  Cu11  1  0.073  0.073  0.427  1.0
  O  O12  1  0.852  0.649  0.365  1.0
  O  O13  1  0.351  0.148  0.635  1.0
  O  O14  1  0.317  0.809  0.191  1.0
  O  O15  1  0.191  0.683  0.809  1.0
  O  O16  1  0.682  0.192  0.807  1.0
  O  O17  1  0.808  0.318  0.193  1.0
  O  O18  1  0.192  0.160  0.280  1.0
  O  O19  1  0.840  0.808  0.720  1.0
  O  O20  1  0.340  0.307  0.133  1.0
  O  O21  1  0.693  0.660  0.867  1.0
  O  O22  1  0.812  0.322  0.677  1.0
  O  O23  1  0.678  0.188  0.323  1.0
  O  O24  1  0.188  0.678  0.322  1.0
  O  O25  1  0.322  0.812  0.678  1.0
[/CIF]
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The material structure described by Sr4CaYGa2(Cu2O7)2 crystallizes in the monoclinic C2 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(7), two equivalent O(4), and two equivalent O(5) atoms. Ca(1) is bonded in a body-centered cubic geometry to two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. Y(1) is bonded in a body-centered cubic geometry to two equivalent O(2), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form CuO5 square pyramids that share corners with four equivalent Cu(2)O5 square pyramids and  a cornercorner with one Ga(1)O4 tetrahedra. In the second Cu site, Cu(2) is bonded to one O(2), one O(3), one O(4), 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 Ga(1)O4 tetrahedra. Ga(1) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form GaO4 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 Ga(1)O4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Cu(1), and one Ga(1) atom. In the second O site, O(6) is bonded to one Sr(1), one Sr(2), one Ca(1), one Y(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaYCu2 octahedra that share corners with two equivalent O(6)Sr2CaYCu2 octahedra, corners with two equivalent O(7)Sr2CaYCu2 octahedra, corners with four equivalent O(2)Sr2CaYCu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra,  an edgeedge with one O(3)Sr2CaYCu2 octahedra, edges with two equivalent O(2)Sr2CaYCu2 octahedra, faces with two equivalent O(3)Sr2CaYCu2 octahedra, and faces with two equivalent O(7)Sr2CaYCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the third O site, O(7) is bonded to one Sr(1), one Sr(2), one Ca(1), one Y(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaYCu2 octahedra that share corners with two equivalent O(6)Sr2CaYCu2 octahedra, corners with two equivalent O(7)Sr2CaYCu2 octahedra, corners with four equivalent O(3)Sr2CaYCu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra,  an edgeedge with one O(2)Sr2CaYCu2 octahedra, edges with two equivalent O(3)Sr2CaYCu2 octahedra, faces with two equivalent O(2)Sr2CaYCu2 octahedra, and faces with two equivalent O(6)Sr2CaYCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the fourth O site, O(1) is bonded to one Sr(1), one Sr(2), and two equivalent Ga(1) atoms to form distorted OSr2Ga2 tetrahedra that share corners with two equivalent O(2)Sr2CaYCu2 octahedra, corners with two equivalent O(3)Sr2CaYCu2 octahedra, corners with two equivalent O(6)Sr2CaYCu2 octahedra, corners with two equivalent O(7)Sr2CaYCu2 octahedra, and corners with two equivalent O(1)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 21-68°. In the fifth O site, O(2) is bonded to one Sr(1), one Sr(2), one Ca(1), one Y(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaYCu2 octahedra that share corners with two equivalent O(2)Sr2CaYCu2 octahedra, corners with two equivalent O(3)Sr2CaYCu2 octahedra, corners with four equivalent O(6)Sr2CaYCu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra,  an edgeedge with one O(7)Sr2CaYCu2 octahedra, edges with two equivalent O(6)Sr2CaYCu2 octahedra, faces with two equivalent O(3)Sr2CaYCu2 octahedra, and faces with two equivalent O(7)Sr2CaYCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the sixth O site, O(3) is bonded to one Sr(1), one Sr(2), one Ca(1), one Y(1), one Cu(1), and one Cu(2) atom to form distorted OSr2CaYCu2 octahedra that share corners with two equivalent O(2)Sr2CaYCu2 octahedra, corners with two equivalent O(3)Sr2CaYCu2 octahedra, corners with four equivalent O(7)Sr2CaYCu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra,  an edgeedge with one O(6)Sr2CaYCu2 octahedra, edges with two equivalent O(7)Sr2CaYCu2 octahedra, faces with two equivalent O(2)Sr2CaYCu2 octahedra, and faces with two equivalent O(6)Sr2CaYCu2 octahedra. The corner-sharing octahedral tilt angles range from 0-69°. In the seventh 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 Ga(1) atom. is represented by the CIF card [CIF]
data_Sr4CaYGa2(Cu2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.239
_cell_length_b   12.239
_cell_length_c   5.502
_cell_angle_alpha   77.068
_cell_angle_beta   77.068
_cell_angle_gamma   25.468
_symmetry_Int_Tables_number   1
_cell_volume   344.907
_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  0.148  0.152  0.864  1.0
  Sr  Sr1  1  0.848  0.852  0.136  1.0
  Sr  Sr2  1  0.346  0.351  0.666  1.0
  Sr  Sr3  1  0.649  0.654  0.334  1.0
  Ca  Ca4  1  0.000  1.000  0.000  1.0
  Y  Y5  1  0.500  0.500  0.500  1.0
  Ga  Ga6  1  0.704  0.796  0.682  1.0
  Ga  Ga7  1  0.204  0.296  0.318  1.0
  Cu  Cu8  1  0.573  0.573  0.926  1.0
  Cu  Cu9  1  0.427  0.427  0.074  1.0
  Cu  Cu10  1  0.927  0.927  0.573  1.0
  Cu  Cu11  1  0.073  0.073  0.427  1.0
  O  O12  1  0.852  0.649  0.365  1.0
  O  O13  1  0.351  0.148  0.635  1.0
  O  O14  1  0.317  0.809  0.191  1.0
  O  O15  1  0.191  0.683  0.809  1.0
  O  O16  1  0.682  0.192  0.807  1.0
  O  O17  1  0.808  0.318  0.193  1.0
  O  O18  1  0.192  0.160  0.280  1.0
  O  O19  1  0.840  0.808  0.720  1.0
  O  O20  1  0.340  0.307  0.133  1.0
  O  O21  1  0.693  0.660  0.867  1.0
  O  O22  1  0.812  0.322  0.677  1.0
  O  O23  1  0.678  0.188  0.323  1.0
  O  O24  1  0.188  0.678  0.322  1.0
  O  O25  1  0.322  0.812  0.678  1.0
[/CIF]
.