The structure described by GdEuTi2O7 crystallizes in the orthorhombic Imma space group. Gd(1) is bonded to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms to form distorted GdO8 hexagonal bipyramids that share edges with two equivalent Gd(1)O8 hexagonal bipyramids, edges with four equivalent Eu(1)O8 hexagonal bipyramids, edges with two equivalent Ti(2)O6 octahedra, and edges with four equivalent Ti(1)O6 octahedra. Eu(1) is bonded to two equivalent O(1), two equivalent O(3), and four equivalent O(4) atoms to form distorted EuO8 hexagonal bipyramids that share edges with two equivalent Eu(1)O8 hexagonal bipyramids, edges with four equivalent Gd(1)O8 hexagonal bipyramids, edges with two equivalent Ti(1)O6 octahedra, and edges with four equivalent Ti(2)O6 octahedra. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form TiO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with four equivalent Ti(2)O6 octahedra, edges with two equivalent Eu(1)O8 hexagonal bipyramids, and edges with four equivalent Gd(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 47°. In the second Ti site, Ti(2) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form TiO6 octahedra that share corners with two equivalent Ti(2)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, edges with two equivalent Gd(1)O8 hexagonal bipyramids, and edges with four equivalent Eu(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 46-47°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Gd(1) and two equivalent Eu(1) atoms to form corner-sharing OEu2Gd2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Gd(1) and two equivalent Ti(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Eu(1) and two equivalent Ti(2) atoms. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Gd(1), one Eu(1), one Ti(1), and one Ti(2) atom. is represented by the CIF file [CIF]
data_EuGdTi2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.280
_cell_length_b   7.241
_cell_length_c   7.305
_cell_angle_alpha   90.000
_cell_angle_beta   59.886
_cell_angle_gamma   119.819
_symmetry_Int_Tables_number   1
_cell_volume   272.577
_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
  Eu  Eu0  1  0.500  0.500  0.000  1.0
  Eu  Eu1  1  0.500  0.000  0.000  1.0
  Gd  Gd2  1  0.000  0.000  0.500  1.0
  Gd  Gd3  1  0.000  0.000  0.000  1.0
  Ti  Ti4  1  0.500  0.000  0.500  1.0
  Ti  Ti5  1  0.500  0.500  0.500  1.0
  Ti  Ti6  1  0.000  0.500  0.000  1.0
  Ti  Ti7  1  0.000  0.500  0.500  1.0
  O  O8  1  0.246  0.123  0.127  1.0
  O  O9  1  0.754  0.877  0.873  1.0
  O  O10  1  0.653  0.827  0.423  1.0
  O  O11  1  0.849  0.425  0.825  1.0
  O  O12  1  0.249  0.826  0.826  1.0
  O  O13  1  0.249  0.422  0.426  1.0
  O  O14  1  0.249  0.422  0.826  1.0
  O  O15  1  0.249  0.826  0.426  1.0
  O  O16  1  0.347  0.173  0.577  1.0
  O  O17  1  0.151  0.575  0.175  1.0
  O  O18  1  0.751  0.174  0.174  1.0
  O  O19  1  0.751  0.578  0.574  1.0
  O  O20  1  0.751  0.578  0.174  1.0
  O  O21  1  0.751  0.174  0.574  1.0
[/CIF]
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The structure described by GdEuTi2O7 crystallizes in the orthorhombic Imma space group. Gd(1) is bonded to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms to form distorted GdO8 hexagonal bipyramids that share edges with two equivalent Gd(1)O8 hexagonal bipyramids, edges with four equivalent Eu(1)O8 hexagonal bipyramids, edges with two equivalent Ti(2)O6 octahedra, and edges with four equivalent Ti(1)O6 octahedra. Eu(1) is bonded to two equivalent O(1), two equivalent O(3), and four equivalent O(4) atoms to form distorted EuO8 hexagonal bipyramids that share edges with two equivalent Eu(1)O8 hexagonal bipyramids, edges with four equivalent Gd(1)O8 hexagonal bipyramids, edges with two equivalent Ti(1)O6 octahedra, and edges with four equivalent Ti(2)O6 octahedra. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form TiO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with four equivalent Ti(2)O6 octahedra, edges with two equivalent Eu(1)O8 hexagonal bipyramids, and edges with four equivalent Gd(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 47°. In the second Ti site, Ti(2) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form TiO6 octahedra that share corners with two equivalent Ti(2)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, edges with two equivalent Gd(1)O8 hexagonal bipyramids, and edges with four equivalent Eu(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 46-47°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Gd(1) and two equivalent Eu(1) atoms to form corner-sharing OEu2Gd2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Gd(1) and two equivalent Ti(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Eu(1) and two equivalent Ti(2) atoms. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Gd(1), one Eu(1), one Ti(1), and one Ti(2) atom. is represented by the CIF file [CIF]
data_EuGdTi2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.280
_cell_length_b   7.241
_cell_length_c   7.305
_cell_angle_alpha   90.000
_cell_angle_beta   59.886
_cell_angle_gamma   119.819
_symmetry_Int_Tables_number   1
_cell_volume   272.577
_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
  Eu  Eu0  1  0.500  0.500  0.000  1.0
  Eu  Eu1  1  0.500  0.000  0.000  1.0
  Gd  Gd2  1  0.000  0.000  0.500  1.0
  Gd  Gd3  1  0.000  0.000  0.000  1.0
  Ti  Ti4  1  0.500  0.000  0.500  1.0
  Ti  Ti5  1  0.500  0.500  0.500  1.0
  Ti  Ti6  1  0.000  0.500  0.000  1.0
  Ti  Ti7  1  0.000  0.500  0.500  1.0
  O  O8  1  0.246  0.123  0.127  1.0
  O  O9  1  0.754  0.877  0.873  1.0
  O  O10  1  0.653  0.827  0.423  1.0
  O  O11  1  0.849  0.425  0.825  1.0
  O  O12  1  0.249  0.826  0.826  1.0
  O  O13  1  0.249  0.422  0.426  1.0
  O  O14  1  0.249  0.422  0.826  1.0
  O  O15  1  0.249  0.826  0.426  1.0
  O  O16  1  0.347  0.173  0.577  1.0
  O  O17  1  0.151  0.575  0.175  1.0
  O  O18  1  0.751  0.174  0.174  1.0
  O  O19  1  0.751  0.578  0.574  1.0
  O  O20  1  0.751  0.578  0.174  1.0
  O  O21  1  0.751  0.174  0.574  1.0
[/CIF]
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