The crystal structure described by K2Eu2O3 is Aluminum carbonitride-like structured and crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Eu(1) is bonded to one O(1) and three equivalent O(2) atoms to form a mixture of edge and corner-sharing EuO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent K(1) and two equivalent Eu(1) atoms to form corner-sharing OK4Eu2 octahedra. The corner-sharing octahedral tilt angles are 61°. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent K(1) and three equivalent Eu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Eu2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.152
_cell_length_b   7.039
_cell_length_c   7.083
_cell_angle_alpha   62.493
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   316.251
_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
  K  K0  1  0.353  0.825  0.926  1.0
  K  K1  1  0.147  0.825  0.426  1.0
  K  K2  1  0.853  0.175  0.574  1.0
  K  K3  1  0.647  0.175  0.074  1.0
  Eu  Eu4  1  0.624  0.670  0.570  1.0
  Eu  Eu5  1  0.124  0.330  0.930  1.0
  Eu  Eu6  1  0.876  0.670  0.070  1.0
  Eu  Eu7  1  0.376  0.330  0.430  1.0
  O  O8  1  0.500  0.000  0.500  1.0
  O  O9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.897  0.599  0.772  1.0
  O  O11  1  0.397  0.401  0.728  1.0
  O  O12  1  0.603  0.599  0.272  1.0
  O  O13  1  0.103  0.401  0.228  1.0
[/CIF]
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The crystal structure described by K2Eu2O3 is Aluminum carbonitride-like structured and crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. Eu(1) is bonded to one O(1) and three equivalent O(2) atoms to form a mixture of edge and corner-sharing EuO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent K(1) and two equivalent Eu(1) atoms to form corner-sharing OK4Eu2 octahedra. The corner-sharing octahedral tilt angles are 61°. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent K(1) and three equivalent Eu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Eu2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.152
_cell_length_b   7.039
_cell_length_c   7.083
_cell_angle_alpha   62.493
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   316.251
_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
  K  K0  1  0.353  0.825  0.926  1.0
  K  K1  1  0.147  0.825  0.426  1.0
  K  K2  1  0.853  0.175  0.574  1.0
  K  K3  1  0.647  0.175  0.074  1.0
  Eu  Eu4  1  0.624  0.670  0.570  1.0
  Eu  Eu5  1  0.124  0.330  0.930  1.0
  Eu  Eu6  1  0.876  0.670  0.070  1.0
  Eu  Eu7  1  0.376  0.330  0.430  1.0
  O  O8  1  0.500  0.000  0.500  1.0
  O  O9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.897  0.599  0.772  1.0
  O  O11  1  0.397  0.401  0.728  1.0
  O  O12  1  0.603  0.599  0.272  1.0
  O  O13  1  0.103  0.401  0.228  1.0
[/CIF]
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