The structure described by Sr2YbCu2GaO7 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. Yb(1) is bonded in a body-centered cubic geometry to four equivalent O(3) and four equivalent O(4) atoms. Cu(1) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted 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 two equivalent O(1) and two equivalent O(2) atoms to form GaO4 tetrahedra that share corners with two equivalent Cu(1)O5 square pyramids and corners with two equivalent Ga(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(4) is bonded to two equivalent Sr(1), two equivalent Yb(1), and two equivalent Cu(1) atoms to form distorted OSr2Yb2Cu2 octahedra that share corners with four equivalent O(3)Sr2Yb2Cu2 octahedra, corners with four equivalent O(4)Sr2Yb2Cu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra, edges with three equivalent O(3)Sr2Yb2Cu2 octahedra, faces with two equivalent O(3)Sr2Yb2Cu2 octahedra, and faces with two equivalent O(4)Sr2Yb2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. In the second O site, O(1) is bonded to two equivalent Sr(1) and two equivalent Ga(1) atoms to form distorted OSr2Ga2 tetrahedra that share corners with four equivalent O(3)Sr2Yb2Cu2 octahedra, corners with four equivalent O(4)Sr2Yb2Cu2 octahedra, and corners with two equivalent O(1)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 23-65°. In the third O site, O(2) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Cu(1), and one Ga(1) atom. In the fourth O site, O(3) is bonded to two equivalent Sr(1), two equivalent Yb(1), and two equivalent Cu(1) atoms to form distorted OSr2Yb2Cu2 octahedra that share corners with four equivalent O(3)Sr2Yb2Cu2 octahedra, corners with four equivalent O(4)Sr2Yb2Cu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra, edges with three equivalent O(4)Sr2Yb2Cu2 octahedra, faces with two equivalent O(3)Sr2Yb2Cu2 octahedra, and faces with two equivalent O(4)Sr2Yb2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. is represented by the CIF card [CIF]
data_Sr2YbGaCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.216
_cell_length_b   12.216
_cell_length_c   12.216
_cell_angle_alpha   154.769
_cell_angle_beta   154.276
_cell_angle_gamma   36.342
_symmetry_Int_Tables_number   1
_cell_volume   336.888
_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  0.638  0.656  0.995  1.0
  Sr  Sr1  1  0.362  0.357  0.018  1.0
  Sr  Sr2  1  0.161  0.156  0.018  1.0
  Sr  Sr3  1  0.839  0.857  0.995  1.0
  Yb  Yb4  1  0.000  0.008  0.008  1.0
  Yb  Yb5  1  0.500  0.508  0.008  1.0
  Ga  Ga6  1  0.182  0.801  0.483  1.0
  Ga  Ga7  1  0.818  0.301  0.619  1.0
  Cu  Cu8  1  0.572  0.077  0.506  1.0
  Cu  Cu9  1  0.428  0.934  0.506  1.0
  Cu  Cu10  1  0.071  0.577  0.506  1.0
  Cu  Cu11  1  0.929  0.434  0.506  1.0
  O  O12  1  0.138  0.157  0.794  1.0
  O  O13  1  0.862  0.657  0.019  1.0
  O  O14  1  0.634  0.165  0.447  1.0
  O  O15  1  0.366  0.813  0.531  1.0
  O  O16  1  0.218  0.665  0.531  1.0
  O  O17  1  0.782  0.313  0.447  1.0
  O  O18  1  0.315  0.321  0.509  1.0
  O  O19  1  0.685  0.194  0.006  1.0
  O  O20  1  0.312  0.821  0.006  1.0
  O  O21  1  0.688  0.694  0.509  1.0
  O  O22  1  0.817  0.823  0.507  1.0
  O  O23  1  0.183  0.690  0.006  1.0
  O  O24  1  0.816  0.323  0.006  1.0
  O  O25  1  0.184  0.190  0.507  1.0
[/CIF]
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The structure described by Sr2YbCu2GaO7 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. Yb(1) is bonded in a body-centered cubic geometry to four equivalent O(3) and four equivalent O(4) atoms. Cu(1) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted 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 two equivalent O(1) and two equivalent O(2) atoms to form GaO4 tetrahedra that share corners with two equivalent Cu(1)O5 square pyramids and corners with two equivalent Ga(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(4) is bonded to two equivalent Sr(1), two equivalent Yb(1), and two equivalent Cu(1) atoms to form distorted OSr2Yb2Cu2 octahedra that share corners with four equivalent O(3)Sr2Yb2Cu2 octahedra, corners with four equivalent O(4)Sr2Yb2Cu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra, edges with three equivalent O(3)Sr2Yb2Cu2 octahedra, faces with two equivalent O(3)Sr2Yb2Cu2 octahedra, and faces with two equivalent O(4)Sr2Yb2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. In the second O site, O(1) is bonded to two equivalent Sr(1) and two equivalent Ga(1) atoms to form distorted OSr2Ga2 tetrahedra that share corners with four equivalent O(3)Sr2Yb2Cu2 octahedra, corners with four equivalent O(4)Sr2Yb2Cu2 octahedra, and corners with two equivalent O(1)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 23-65°. In the third O site, O(2) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Cu(1), and one Ga(1) atom. In the fourth O site, O(3) is bonded to two equivalent Sr(1), two equivalent Yb(1), and two equivalent Cu(1) atoms to form distorted OSr2Yb2Cu2 octahedra that share corners with four equivalent O(3)Sr2Yb2Cu2 octahedra, corners with four equivalent O(4)Sr2Yb2Cu2 octahedra, corners with two equivalent O(1)Sr2Ga2 tetrahedra, edges with three equivalent O(4)Sr2Yb2Cu2 octahedra, faces with two equivalent O(3)Sr2Yb2Cu2 octahedra, and faces with two equivalent O(4)Sr2Yb2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. is represented by the CIF card [CIF]
data_Sr2YbGaCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.216
_cell_length_b   12.216
_cell_length_c   12.216
_cell_angle_alpha   154.769
_cell_angle_beta   154.276
_cell_angle_gamma   36.342
_symmetry_Int_Tables_number   1
_cell_volume   336.888
_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  0.638  0.656  0.995  1.0
  Sr  Sr1  1  0.362  0.357  0.018  1.0
  Sr  Sr2  1  0.161  0.156  0.018  1.0
  Sr  Sr3  1  0.839  0.857  0.995  1.0
  Yb  Yb4  1  0.000  0.008  0.008  1.0
  Yb  Yb5  1  0.500  0.508  0.008  1.0
  Ga  Ga6  1  0.182  0.801  0.483  1.0
  Ga  Ga7  1  0.818  0.301  0.619  1.0
  Cu  Cu8  1  0.572  0.077  0.506  1.0
  Cu  Cu9  1  0.428  0.934  0.506  1.0
  Cu  Cu10  1  0.071  0.577  0.506  1.0
  Cu  Cu11  1  0.929  0.434  0.506  1.0
  O  O12  1  0.138  0.157  0.794  1.0
  O  O13  1  0.862  0.657  0.019  1.0
  O  O14  1  0.634  0.165  0.447  1.0
  O  O15  1  0.366  0.813  0.531  1.0
  O  O16  1  0.218  0.665  0.531  1.0
  O  O17  1  0.782  0.313  0.447  1.0
  O  O18  1  0.315  0.321  0.509  1.0
  O  O19  1  0.685  0.194  0.006  1.0
  O  O20  1  0.312  0.821  0.006  1.0
  O  O21  1  0.688  0.694  0.509  1.0
  O  O22  1  0.817  0.823  0.507  1.0
  O  O23  1  0.183  0.690  0.006  1.0
  O  O24  1  0.816  0.323  0.006  1.0
  O  O25  1  0.184  0.190  0.507  1.0
[/CIF]
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