The structure described by La4Re6O19 crystallizes in the trigonal R3 space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 10-coordinate geometry to one O(1), one O(4), one O(5), one O(7), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. In the second La site, La(2) is bonded in a 10-coordinate geometry to one O(1), three equivalent O(4), three equivalent O(5), and three equivalent O(7) atoms. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded to one O(4), one O(5), one O(6), one O(7), and two equivalent O(3) atoms to form a mixture of edge and corner-sharing ReO6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the second Re site, Re(2) is bonded to one O(4), one O(5), one O(6), one O(7), and two equivalent O(2) atoms to form a mixture of edge and corner-sharing ReO6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are seven inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Re(1) atoms. In the second O site, O(4) is bonded in a 4-coordinate geometry to one La(1), one La(2), one Re(1), and one Re(2) atom. In the third O site, O(5) is bonded in a 4-coordinate geometry to one La(1), one La(2), one Re(1), and one Re(2) atom. In the fourth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent La(1), one Re(1), and one Re(2) atom. In the fifth O site, O(7) is bonded in a 4-coordinate geometry to one La(1), one La(2), one Re(1), and one Re(2) atom. In the sixth O site, O(1) is bonded in a tetrahedral geometry to one La(2) and three equivalent La(1) atoms. In the seventh O site, O(2) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Re(2) atoms. is represented by the CIF file [CIF]
data_La4Re6O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.858
_cell_length_b   7.858
_cell_length_c   7.858
_cell_angle_alpha   109.478
_cell_angle_beta   109.475
_cell_angle_gamma   109.476
_symmetry_Int_Tables_number   1
_cell_volume   373.480
_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
  La  La0  1  0.316  0.000  0.000  1.0
  La  La1  1  0.684  0.684  0.684  1.0
  La  La2  1  0.000  0.316  0.000  1.0
  La  La3  1  0.000  0.000  0.316  1.0
  Re  Re4  1  0.633  0.500  0.133  1.0
  Re  Re5  1  0.500  0.867  0.367  1.0
  Re  Re6  1  0.133  0.633  0.500  1.0
  Re  Re7  1  0.500  0.133  0.633  1.0
  Re  Re8  1  0.867  0.367  0.500  1.0
  Re  Re9  1  0.367  0.500  0.867  1.0
  O  O10  1  0.000  0.000  0.000  1.0
  O  O11  1  0.320  0.695  0.058  1.0
  O  O12  1  0.638  0.263  0.942  1.0
  O  O13  1  0.678  0.737  0.374  1.0
  O  O14  1  0.942  0.638  0.263  1.0
  O  O15  1  0.695  0.058  0.320  1.0
  O  O16  1  0.305  0.626  0.363  1.0
  O  O17  1  0.626  0.363  0.305  1.0
  O  O18  1  0.263  0.942  0.638  1.0
  O  O19  1  0.374  0.678  0.737  1.0
  O  O20  1  0.322  0.000  0.322  1.0
  O  O21  1  0.322  0.322  0.000  1.0
  O  O22  1  0.000  0.678  0.679  1.0
  O  O23  1  0.678  0.679  0.000  1.0
  O  O24  1  0.000  0.322  0.322  1.0
  O  O25  1  0.679  0.000  0.678  1.0
  O  O26  1  0.363  0.305  0.626  1.0
  O  O27  1  0.058  0.320  0.695  1.0
  O  O28  1  0.737  0.374  0.678  1.0
[/CIF]
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The structure described by La4Re6O19 crystallizes in the trigonal R3 space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 10-coordinate geometry to one O(1), one O(4), one O(5), one O(7), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. In the second La site, La(2) is bonded in a 10-coordinate geometry to one O(1), three equivalent O(4), three equivalent O(5), and three equivalent O(7) atoms. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded to one O(4), one O(5), one O(6), one O(7), and two equivalent O(3) atoms to form a mixture of edge and corner-sharing ReO6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the second Re site, Re(2) is bonded to one O(4), one O(5), one O(6), one O(7), and two equivalent O(2) atoms to form a mixture of edge and corner-sharing ReO6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are seven inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Re(1) atoms. In the second O site, O(4) is bonded in a 4-coordinate geometry to one La(1), one La(2), one Re(1), and one Re(2) atom. In the third O site, O(5) is bonded in a 4-coordinate geometry to one La(1), one La(2), one Re(1), and one Re(2) atom. In the fourth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent La(1), one Re(1), and one Re(2) atom. In the fifth O site, O(7) is bonded in a 4-coordinate geometry to one La(1), one La(2), one Re(1), and one Re(2) atom. In the sixth O site, O(1) is bonded in a tetrahedral geometry to one La(2) and three equivalent La(1) atoms. In the seventh O site, O(2) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Re(2) atoms. is represented by the CIF file [CIF]
data_La4Re6O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.858
_cell_length_b   7.858
_cell_length_c   7.858
_cell_angle_alpha   109.478
_cell_angle_beta   109.475
_cell_angle_gamma   109.476
_symmetry_Int_Tables_number   1
_cell_volume   373.480
_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
  La  La0  1  0.316  0.000  0.000  1.0
  La  La1  1  0.684  0.684  0.684  1.0
  La  La2  1  0.000  0.316  0.000  1.0
  La  La3  1  0.000  0.000  0.316  1.0
  Re  Re4  1  0.633  0.500  0.133  1.0
  Re  Re5  1  0.500  0.867  0.367  1.0
  Re  Re6  1  0.133  0.633  0.500  1.0
  Re  Re7  1  0.500  0.133  0.633  1.0
  Re  Re8  1  0.867  0.367  0.500  1.0
  Re  Re9  1  0.367  0.500  0.867  1.0
  O  O10  1  0.000  0.000  0.000  1.0
  O  O11  1  0.320  0.695  0.058  1.0
  O  O12  1  0.638  0.263  0.942  1.0
  O  O13  1  0.678  0.737  0.374  1.0
  O  O14  1  0.942  0.638  0.263  1.0
  O  O15  1  0.695  0.058  0.320  1.0
  O  O16  1  0.305  0.626  0.363  1.0
  O  O17  1  0.626  0.363  0.305  1.0
  O  O18  1  0.263  0.942  0.638  1.0
  O  O19  1  0.374  0.678  0.737  1.0
  O  O20  1  0.322  0.000  0.322  1.0
  O  O21  1  0.322  0.322  0.000  1.0
  O  O22  1  0.000  0.678  0.679  1.0
  O  O23  1  0.678  0.679  0.000  1.0
  O  O24  1  0.000  0.322  0.322  1.0
  O  O25  1  0.679  0.000  0.678  1.0
  O  O26  1  0.363  0.305  0.626  1.0
  O  O27  1  0.058  0.320  0.695  1.0
  O  O28  1  0.737  0.374  0.678  1.0
[/CIF]
.