The compound described by MgEu2TiO4 crystallizes in the monoclinic Cm space group. Mg(1) is bonded in a bent 150 degrees geometry to two equivalent O(2) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Eu site, Eu(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. Ti(1) is bonded to one O(1), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing TiO5 square pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent Eu(2) and one Ti(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Eu(2), and two equivalent Eu(1) atoms. In the third O site, O(3) is bonded to two equivalent Eu(1), two equivalent Eu(2), and two equivalent Ti(1) atoms to form a mixture of distorted face, corner, and edge-sharing OEu4Ti2 octahedra. The corner-sharing octahedral tilt angles are 13°. In the fourth O site, O(4) is bonded to two equivalent Eu(1), two equivalent Eu(2), and two equivalent Ti(1) atoms to form a mixture of distorted face, corner, and edge-sharing OEu4Ti2 octahedra. The corner-sharing octahedral tilt angles are 11°. is represented by the CIF file [CIF]
data_Eu2MgTiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.886
_cell_length_b   3.965
_cell_length_c   8.318
_cell_angle_alpha   90.034
_cell_angle_beta   103.510
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   124.619
_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
  Eu  Eu0  1  0.398  0.593  0.796  1.0
  Eu  Eu1  1  0.625  0.589  0.250  1.0
  Mg  Mg2  1  0.791  0.094  0.582  1.0
  Ti  Ti3  1  0.018  0.093  0.037  1.0
  O  O4  1  0.135  0.100  0.270  1.0
  O  O5  1  0.771  0.594  0.543  1.0
  O  O6  1  0.004  0.594  0.009  1.0
  O  O7  1  0.507  0.093  0.014  1.0
[/CIF]
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The compound described by MgEu2TiO4 crystallizes in the monoclinic Cm space group. Mg(1) is bonded in a bent 150 degrees geometry to two equivalent O(2) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Eu site, Eu(2) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. Ti(1) is bonded to one O(1), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing TiO5 square pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to four equivalent Eu(2) and one Ti(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Eu(2), and two equivalent Eu(1) atoms. In the third O site, O(3) is bonded to two equivalent Eu(1), two equivalent Eu(2), and two equivalent Ti(1) atoms to form a mixture of distorted face, corner, and edge-sharing OEu4Ti2 octahedra. The corner-sharing octahedral tilt angles are 13°. In the fourth O site, O(4) is bonded to two equivalent Eu(1), two equivalent Eu(2), and two equivalent Ti(1) atoms to form a mixture of distorted face, corner, and edge-sharing OEu4Ti2 octahedra. The corner-sharing octahedral tilt angles are 11°. is represented by the CIF file [CIF]
data_Eu2MgTiO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.886
_cell_length_b   3.965
_cell_length_c   8.318
_cell_angle_alpha   90.034
_cell_angle_beta   103.510
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   124.619
_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
  Eu  Eu0  1  0.398  0.593  0.796  1.0
  Eu  Eu1  1  0.625  0.589  0.250  1.0
  Mg  Mg2  1  0.791  0.094  0.582  1.0
  Ti  Ti3  1  0.018  0.093  0.037  1.0
  O  O4  1  0.135  0.100  0.270  1.0
  O  O5  1  0.771  0.594  0.543  1.0
  O  O6  1  0.004  0.594  0.009  1.0
  O  O7  1  0.507  0.093  0.014  1.0
[/CIF]
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