The compound described by NaEuPrNiO6 crystallizes in the tetragonal P-4n2 space group. Na(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NaO6 octahedra that share corners with six equivalent Ni(1)O6 octahedra, edges with four equivalent Eu(1)O8 hexagonal bipyramids, and edges with four equivalent Pr(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 0-61°. Eu(1) is bonded to four equivalent O(1) and four equivalent O(2) atoms to form EuO8 hexagonal bipyramids that share corners with four equivalent Eu(1)O8 hexagonal bipyramids, edges with six equivalent Pr(1)O8 hexagonal bipyramids, edges with four equivalent Na(1)O6 octahedra, and edges with four equivalent Ni(1)O6 octahedra. Pr(1) is bonded to four equivalent O(1) and four equivalent O(2) atoms to form PrO8 hexagonal bipyramids that share corners with four equivalent Pr(1)O8 hexagonal bipyramids, edges with six equivalent Eu(1)O8 hexagonal bipyramids, edges with four equivalent Na(1)O6 octahedra, and edges with four equivalent Ni(1)O6 octahedra. Ni(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NiO6 octahedra that share corners with six equivalent Na(1)O6 octahedra, edges with four equivalent Eu(1)O8 hexagonal bipyramids, and edges with four equivalent Pr(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 0-61°. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), two equivalent Eu(1), two equivalent Pr(1), and one Ni(1) atom to form a mixture of edge and corner-sharing ONaPr2Eu2Ni octahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Eu(1), one Pr(1), one Ni(1), and one O(2) atom. is represented by the CIF card [CIF]
data_NaPrEuNiO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.239
_cell_length_b   5.239
_cell_length_c   9.594
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   263.297
_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
  Na  Na0  1  0.000  0.000  0.000  1.0
  Na  Na1  1  0.500  0.500  0.500  1.0
  Pr  Pr2  1  0.500  0.000  0.250  1.0
  Pr  Pr3  1  0.000  0.500  0.750  1.0
  Eu  Eu4  1  0.000  0.500  0.250  1.0
  Eu  Eu5  1  0.500  0.000  0.750  1.0
  Ni  Ni6  1  0.000  0.000  0.500  1.0
  Ni  Ni7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.000  0.000  0.264  1.0
  O  O9  1  0.500  0.500  0.236  1.0
  O  O10  1  0.000  0.000  0.736  1.0
  O  O11  1  0.500  0.500  0.764  1.0
  O  O12  1  0.410  0.119  0.002  1.0
  O  O13  1  0.590  0.881  0.002  1.0
  O  O14  1  0.881  0.410  0.998  1.0
  O  O15  1  0.119  0.590  0.998  1.0
  O  O16  1  0.910  0.381  0.502  1.0
  O  O17  1  0.090  0.619  0.502  1.0
  O  O18  1  0.381  0.090  0.498  1.0
  O  O19  1  0.619  0.910  0.498  1.0
[/CIF]
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The compound described by NaEuPrNiO6 crystallizes in the tetragonal P-4n2 space group. Na(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NaO6 octahedra that share corners with six equivalent Ni(1)O6 octahedra, edges with four equivalent Eu(1)O8 hexagonal bipyramids, and edges with four equivalent Pr(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 0-61°. Eu(1) is bonded to four equivalent O(1) and four equivalent O(2) atoms to form EuO8 hexagonal bipyramids that share corners with four equivalent Eu(1)O8 hexagonal bipyramids, edges with six equivalent Pr(1)O8 hexagonal bipyramids, edges with four equivalent Na(1)O6 octahedra, and edges with four equivalent Ni(1)O6 octahedra. Pr(1) is bonded to four equivalent O(1) and four equivalent O(2) atoms to form PrO8 hexagonal bipyramids that share corners with four equivalent Pr(1)O8 hexagonal bipyramids, edges with six equivalent Eu(1)O8 hexagonal bipyramids, edges with four equivalent Na(1)O6 octahedra, and edges with four equivalent Ni(1)O6 octahedra. Ni(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NiO6 octahedra that share corners with six equivalent Na(1)O6 octahedra, edges with four equivalent Eu(1)O8 hexagonal bipyramids, and edges with four equivalent Pr(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 0-61°. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), two equivalent Eu(1), two equivalent Pr(1), and one Ni(1) atom to form a mixture of edge and corner-sharing ONaPr2Eu2Ni octahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Eu(1), one Pr(1), one Ni(1), and one O(2) atom. is represented by the CIF card [CIF]
data_NaPrEuNiO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.239
_cell_length_b   5.239
_cell_length_c   9.594
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   263.297
_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
  Na  Na0  1  0.000  0.000  0.000  1.0
  Na  Na1  1  0.500  0.500  0.500  1.0
  Pr  Pr2  1  0.500  0.000  0.250  1.0
  Pr  Pr3  1  0.000  0.500  0.750  1.0
  Eu  Eu4  1  0.000  0.500  0.250  1.0
  Eu  Eu5  1  0.500  0.000  0.750  1.0
  Ni  Ni6  1  0.000  0.000  0.500  1.0
  Ni  Ni7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.000  0.000  0.264  1.0
  O  O9  1  0.500  0.500  0.236  1.0
  O  O10  1  0.000  0.000  0.736  1.0
  O  O11  1  0.500  0.500  0.764  1.0
  O  O12  1  0.410  0.119  0.002  1.0
  O  O13  1  0.590  0.881  0.002  1.0
  O  O14  1  0.881  0.410  0.998  1.0
  O  O15  1  0.119  0.590  0.998  1.0
  O  O16  1  0.910  0.381  0.502  1.0
  O  O17  1  0.090  0.619  0.502  1.0
  O  O18  1  0.381  0.090  0.498  1.0
  O  O19  1  0.619  0.910  0.498  1.0
[/CIF]
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