The structure described by Sr4CaYGa2(Cu2O7)2 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one O(11), one O(12), one O(14), one O(3), and one O(4) atom. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(1), one O(13), one O(14), one O(2), one O(3), one O(5), and one O(7) atom. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(2), one O(4), and one O(9) atom. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(13), one O(14), one O(5), one O(6), and one O(7) atom. Ca(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(12), one O(14), one O(2), and one O(8) atom. Y(1) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(13), one O(4), one O(6), one O(7), and one O(9) atom. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to one O(12) and one O(3) atom. In the second Cu site, Cu(2) is bonded in a distorted T-shaped geometry to one O(14), one O(7), and one O(8) atom. In the third Cu site, Cu(3) is bonded in a T-shaped geometry to one O(1), one O(5), and one O(8) atom. In the fourth Cu site, Cu(4) is bonded in a distorted trigonal planar geometry to one O(1), one O(2), and one O(4) atom. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a distorted tetrahedral geometry to one O(4), one O(5), one O(6), and one O(9) atom. In the second Ga site, Ga(2) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(3), and one O(6) atom. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Sr(2), one Sr(4), one Ca(1), one Cu(3), and one Cu(4) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Sr(2), one Sr(3), one Ca(1), and one Cu(4) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), one Cu(1), and one Ga(2) atom to form distorted OSr2GaCu tetrahedra that share  a cornercorner with one O(5)Sr2GaCu tetrahedra,  a cornercorner with one O(7)Sr2YCu trigonal pyramid, and  a cornercorner with one O(11)Sr2YO trigonal pyramid. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Cu(4), and one Ga(1) atom. In the fifth O site, O(5) is bonded to one Sr(2), one Sr(4), one Cu(3), and one Ga(1) atom to form distorted OSr2GaCu tetrahedra that share  a cornercorner with one O(3)Sr2GaCu tetrahedra and  an edgeedge with one O(7)Sr2YCu trigonal pyramid. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(4), one Y(1), one Ga(1), and one Ga(2) atom. In the seventh O site, O(7) is bonded to one Sr(2), one Sr(4), one Y(1), and one Cu(2) atom to form distorted OSr2YCu trigonal pyramids that share  a cornercorner with one O(3)Sr2GaCu tetrahedra,  a cornercorner with one O(11)Sr2YO trigonal pyramid, and  an edgeedge with one O(5)Sr2GaCu tetrahedra. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Ca(1), one Cu(2), and one Cu(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Sr(3), one Y(1), and one Ga(1) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Sr(3), one Ca(1), one Y(1), and one Ga(2) atom. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(3), one Y(1), and one O(13) atom to form distorted OSr2YO trigonal pyramids that share  a cornercorner with one O(3)Sr2GaCu tetrahedra and  a cornercorner with one O(7)Sr2YCu trigonal pyramid. In the twelfth O site, O(12) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(3), one Sr(4), one Ca(1), and one Cu(1) atom. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one Y(1), and one O(11) atom. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Sr(4), one Ca(1), and one Cu(2) atom. is represented by the CIF card [CIF]
data_Sr4CaYGa2(Cu2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.087
_cell_length_b   7.683
_cell_length_c   8.153
_cell_angle_alpha   99.393
_cell_angle_beta   96.059
_cell_angle_gamma   106.554
_symmetry_Int_Tables_number   1
_cell_volume   414.358
_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  0.031  0.602  0.747  1.0
  Sr  Sr1  1  0.820  0.749  0.184  1.0
  Sr  Sr2  1  0.069  0.120  0.566  1.0
  Sr  Sr3  1  0.254  0.585  0.192  1.0
  Ca  Ca4  1  0.026  0.136  0.985  1.0
  Y  Y5  1  0.506  1.000  0.504  1.0
  Ga  Ga6  1  0.563  0.416  0.436  1.0
  Ga  Ga7  1  0.632  0.762  0.738  1.0
  Cu  Cu8  1  0.435  0.477  0.850  1.0
  Cu  Cu9  1  0.387  0.965  0.087  1.0
  Cu  Cu10  1  0.605  0.284  0.043  1.0
  Cu  Cu11  1  0.860  0.288  0.299  1.0
  O  O12  1  0.889  0.372  0.098  1.0
  O  O13  1  0.965  0.088  0.253  1.0
  O  O14  1  0.705  0.615  0.870  1.0
  O  O15  1  0.786  0.332  0.515  1.0
  O  O16  1  0.552  0.468  0.220  1.0
  O  O17  1  0.538  0.654  0.518  1.0
  O  O18  1  0.522  0.876  0.246  1.0
  O  O19  1  0.349  0.136  0.969  1.0
  O  O20  1  0.380  0.223  0.486  1.0
  O  O21  1  0.765  0.999  0.734  1.0
  O  O22  1  0.243  0.877  0.638  1.0
  O  O23  1  0.168  0.378  0.837  1.0
  O  O24  1  0.161  0.804  0.452  1.0
  O  O25  1  0.124  0.795  0.032  1.0
[/CIF]
.
The structure described by Sr4CaYGa2(Cu2O7)2 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one O(11), one O(12), one O(14), one O(3), and one O(4) atom. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(1), one O(13), one O(14), one O(2), one O(3), one O(5), and one O(7) atom. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(2), one O(4), and one O(9) atom. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(13), one O(14), one O(5), one O(6), and one O(7) atom. Ca(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(12), one O(14), one O(2), and one O(8) atom. Y(1) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(13), one O(4), one O(6), one O(7), and one O(9) atom. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to one O(12) and one O(3) atom. In the second Cu site, Cu(2) is bonded in a distorted T-shaped geometry to one O(14), one O(7), and one O(8) atom. In the third Cu site, Cu(3) is bonded in a T-shaped geometry to one O(1), one O(5), and one O(8) atom. In the fourth Cu site, Cu(4) is bonded in a distorted trigonal planar geometry to one O(1), one O(2), and one O(4) atom. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a distorted tetrahedral geometry to one O(4), one O(5), one O(6), and one O(9) atom. In the second Ga site, Ga(2) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(3), and one O(6) atom. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Sr(2), one Sr(4), one Ca(1), one Cu(3), and one Cu(4) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Sr(2), one Sr(3), one Ca(1), and one Cu(4) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), one Cu(1), and one Ga(2) atom to form distorted OSr2GaCu tetrahedra that share  a cornercorner with one O(5)Sr2GaCu tetrahedra,  a cornercorner with one O(7)Sr2YCu trigonal pyramid, and  a cornercorner with one O(11)Sr2YO trigonal pyramid. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Cu(4), and one Ga(1) atom. In the fifth O site, O(5) is bonded to one Sr(2), one Sr(4), one Cu(3), and one Ga(1) atom to form distorted OSr2GaCu tetrahedra that share  a cornercorner with one O(3)Sr2GaCu tetrahedra and  an edgeedge with one O(7)Sr2YCu trigonal pyramid. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(4), one Y(1), one Ga(1), and one Ga(2) atom. In the seventh O site, O(7) is bonded to one Sr(2), one Sr(4), one Y(1), and one Cu(2) atom to form distorted OSr2YCu trigonal pyramids that share  a cornercorner with one O(3)Sr2GaCu tetrahedra,  a cornercorner with one O(11)Sr2YO trigonal pyramid, and  an edgeedge with one O(5)Sr2GaCu tetrahedra. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Ca(1), one Cu(2), and one Cu(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Sr(3), one Y(1), and one Ga(1) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Sr(3), one Ca(1), one Y(1), and one Ga(2) atom. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(3), one Y(1), and one O(13) atom to form distorted OSr2YO trigonal pyramids that share  a cornercorner with one O(3)Sr2GaCu tetrahedra and  a cornercorner with one O(7)Sr2YCu trigonal pyramid. In the twelfth O site, O(12) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(3), one Sr(4), one Ca(1), and one Cu(1) atom. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one Y(1), and one O(11) atom. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Sr(4), one Ca(1), and one Cu(2) atom. is represented by the CIF card [CIF]
data_Sr4CaYGa2(Cu2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.087
_cell_length_b   7.683
_cell_length_c   8.153
_cell_angle_alpha   99.393
_cell_angle_beta   96.059
_cell_angle_gamma   106.554
_symmetry_Int_Tables_number   1
_cell_volume   414.358
_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  0.031  0.602  0.747  1.0
  Sr  Sr1  1  0.820  0.749  0.184  1.0
  Sr  Sr2  1  0.069  0.120  0.566  1.0
  Sr  Sr3  1  0.254  0.585  0.192  1.0
  Ca  Ca4  1  0.026  0.136  0.985  1.0
  Y  Y5  1  0.506  1.000  0.504  1.0
  Ga  Ga6  1  0.563  0.416  0.436  1.0
  Ga  Ga7  1  0.632  0.762  0.738  1.0
  Cu  Cu8  1  0.435  0.477  0.850  1.0
  Cu  Cu9  1  0.387  0.965  0.087  1.0
  Cu  Cu10  1  0.605  0.284  0.043  1.0
  Cu  Cu11  1  0.860  0.288  0.299  1.0
  O  O12  1  0.889  0.372  0.098  1.0
  O  O13  1  0.965  0.088  0.253  1.0
  O  O14  1  0.705  0.615  0.870  1.0
  O  O15  1  0.786  0.332  0.515  1.0
  O  O16  1  0.552  0.468  0.220  1.0
  O  O17  1  0.538  0.654  0.518  1.0
  O  O18  1  0.522  0.876  0.246  1.0
  O  O19  1  0.349  0.136  0.969  1.0
  O  O20  1  0.380  0.223  0.486  1.0
  O  O21  1  0.765  0.999  0.734  1.0
  O  O22  1  0.243  0.877  0.638  1.0
  O  O23  1  0.168  0.378  0.837  1.0
  O  O24  1  0.161  0.804  0.452  1.0
  O  O25  1  0.124  0.795  0.032  1.0
[/CIF]
.