The material described by Na3YbBr6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent Br(1), two equivalent Br(2), and two equivalent Br(3) atoms to form NaBr6 octahedra that share corners with six equivalent Yb(1)Br6 octahedra. The corner-sharing octahedral tilt angles range from 41-55°. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one Br(3), two equivalent Br(1), and two equivalent Br(2) atoms. Yb(1) is bonded to two equivalent Br(1), two equivalent Br(2), and two equivalent Br(3) atoms to form YbBr6 octahedra that share corners with six equivalent Na(1)Br6 octahedra. The corner-sharing octahedral tilt angles range from 41-55°. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Na(2), and one Yb(1) atom. In the second Br site, Br(2) is bonded in a see-saw-like geometry to one Na(1), two equivalent Na(2), and one Yb(1) atom. In the third Br site, Br(3) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Yb(1) atom. is represented by the CIF card [CIF]
data_Na3YbBr6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.912
_cell_length_b   7.613
_cell_length_c   12.759
_cell_angle_alpha   53.487
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   617.700
_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  0.500  0.500  0.000  1.0
  Na  Na1  1  0.000  0.500  0.500  1.0
  Na  Na2  1  0.071  0.736  0.759  1.0
  Na  Na3  1  0.929  0.264  0.241  1.0
  Na  Na4  1  0.571  0.264  0.741  1.0
  Na  Na5  1  0.429  0.736  0.259  1.0
  Yb  Yb6  1  0.500  0.000  0.500  1.0
  Yb  Yb7  1  0.000  0.000  0.000  1.0
  Br  Br8  1  0.807  0.736  0.588  1.0
  Br  Br9  1  0.193  0.264  0.412  1.0
  Br  Br10  1  0.307  0.264  0.912  1.0
  Br  Br11  1  0.693  0.736  0.088  1.0
  Br  Br12  1  0.420  0.906  0.746  1.0
  Br  Br13  1  0.580  0.094  0.254  1.0
  Br  Br14  1  0.920  0.094  0.754  1.0
  Br  Br15  1  0.080  0.906  0.246  1.0
  Br  Br16  1  0.319  0.614  0.571  1.0
  Br  Br17  1  0.681  0.386  0.429  1.0
  Br  Br18  1  0.819  0.386  0.929  1.0
  Br  Br19  1  0.181  0.614  0.071  1.0
[/CIF]
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The material described by Na3YbBr6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent Br(1), two equivalent Br(2), and two equivalent Br(3) atoms to form NaBr6 octahedra that share corners with six equivalent Yb(1)Br6 octahedra. The corner-sharing octahedral tilt angles range from 41-55°. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one Br(3), two equivalent Br(1), and two equivalent Br(2) atoms. Yb(1) is bonded to two equivalent Br(1), two equivalent Br(2), and two equivalent Br(3) atoms to form YbBr6 octahedra that share corners with six equivalent Na(1)Br6 octahedra. The corner-sharing octahedral tilt angles range from 41-55°. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Na(2), and one Yb(1) atom. In the second Br site, Br(2) is bonded in a see-saw-like geometry to one Na(1), two equivalent Na(2), and one Yb(1) atom. In the third Br site, Br(3) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Yb(1) atom. is represented by the CIF card [CIF]
data_Na3YbBr6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.912
_cell_length_b   7.613
_cell_length_c   12.759
_cell_angle_alpha   53.487
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   617.700
_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  0.500  0.500  0.000  1.0
  Na  Na1  1  0.000  0.500  0.500  1.0
  Na  Na2  1  0.071  0.736  0.759  1.0
  Na  Na3  1  0.929  0.264  0.241  1.0
  Na  Na4  1  0.571  0.264  0.741  1.0
  Na  Na5  1  0.429  0.736  0.259  1.0
  Yb  Yb6  1  0.500  0.000  0.500  1.0
  Yb  Yb7  1  0.000  0.000  0.000  1.0
  Br  Br8  1  0.807  0.736  0.588  1.0
  Br  Br9  1  0.193  0.264  0.412  1.0
  Br  Br10  1  0.307  0.264  0.912  1.0
  Br  Br11  1  0.693  0.736  0.088  1.0
  Br  Br12  1  0.420  0.906  0.746  1.0
  Br  Br13  1  0.580  0.094  0.254  1.0
  Br  Br14  1  0.920  0.094  0.754  1.0
  Br  Br15  1  0.080  0.906  0.246  1.0
  Br  Br16  1  0.319  0.614  0.571  1.0
  Br  Br17  1  0.681  0.386  0.429  1.0
  Br  Br18  1  0.819  0.386  0.929  1.0
  Br  Br19  1  0.181  0.614  0.071  1.0
[/CIF]
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