The material structure described by Na2GeF6 is Hydrophilite-derived structured and crystallizes in the trigonal P321 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form NaF6 octahedra that share corners with four equivalent Ge(1)F6 octahedra, corners with six equivalent Na(2)F6 octahedra, and  an edgeedge with one Ge(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. In the second Na site, Na(2) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form distorted NaF6 octahedra that share corners with two equivalent Ge(2)F6 octahedra, corners with six equivalent Na(1)F6 octahedra, and edges with two equivalent Ge(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 49-61°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to three equivalent F(2) and three equivalent F(3) atoms to form GeF6 octahedra that share corners with six equivalent Na(1)F6 octahedra and edges with three equivalent Na(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 44-45°. In the second Ge site, Ge(2) is bonded to six equivalent F(1) atoms to form GeF6 octahedra that share corners with six equivalent Na(2)F6 octahedra and edges with three equivalent Na(1)F6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Ge(2) atom. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Ge(1) atom. In the third F site, F(3) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Ge(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2GeF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.989
_cell_length_b   8.989
_cell_length_c   5.049
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.002
_symmetry_Int_Tables_number   1
_cell_volume   353.253
_cell_formula_units_Z   3
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  0.626  0.626  0.000  1.0
  Na  Na1  1  1.000  0.374  0.000  1.0
  Na  Na2  1  0.374  0.000  0.000  1.0
  Na  Na3  1  0.291  0.291  0.500  1.0
  Na  Na4  1  1.000  0.709  0.500  1.0
  Na  Na5  1  0.709  0.000  0.500  1.0
  Ge  Ge6  1  0.667  0.333  0.504  1.0
  Ge  Ge7  1  0.333  0.667  0.496  1.0
  Ge  Ge8  1  1.000  1.000  0.000  1.0
  F  F9  1  0.086  0.191  0.203  1.0
  F  F10  1  0.809  0.896  0.203  1.0
  F  F11  1  0.104  0.914  0.203  1.0
  F  F12  1  0.895  0.809  0.797  1.0
  F  F13  1  0.914  0.104  0.797  1.0
  F  F14  1  0.191  0.086  0.797  1.0
  F  F15  1  0.552  0.408  0.710  1.0
  F  F16  1  0.592  0.144  0.710  1.0
  F  F17  1  0.856  0.448  0.710  1.0
  F  F18  1  0.477  0.223  0.299  1.0
  F  F19  1  0.777  0.253  0.299  1.0
  F  F20  1  0.747  0.523  0.299  1.0
  F  F21  1  0.253  0.777  0.701  1.0
  F  F22  1  0.524  0.747  0.701  1.0
  F  F23  1  0.223  0.476  0.701  1.0
  F  F24  1  0.407  0.552  0.290  1.0
  F  F25  1  0.448  0.856  0.290  1.0
  F  F26  1  0.144  0.593  0.290  1.0
[/CIF]
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The material structure described by Na2GeF6 is Hydrophilite-derived structured and crystallizes in the trigonal P321 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form NaF6 octahedra that share corners with four equivalent Ge(1)F6 octahedra, corners with six equivalent Na(2)F6 octahedra, and  an edgeedge with one Ge(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. In the second Na site, Na(2) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form distorted NaF6 octahedra that share corners with two equivalent Ge(2)F6 octahedra, corners with six equivalent Na(1)F6 octahedra, and edges with two equivalent Ge(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 49-61°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to three equivalent F(2) and three equivalent F(3) atoms to form GeF6 octahedra that share corners with six equivalent Na(1)F6 octahedra and edges with three equivalent Na(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 44-45°. In the second Ge site, Ge(2) is bonded to six equivalent F(1) atoms to form GeF6 octahedra that share corners with six equivalent Na(2)F6 octahedra and edges with three equivalent Na(1)F6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Ge(2) atom. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Ge(1) atom. In the third F site, F(3) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Ge(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2GeF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.989
_cell_length_b   8.989
_cell_length_c   5.049
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.002
_symmetry_Int_Tables_number   1
_cell_volume   353.253
_cell_formula_units_Z   3
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  0.626  0.626  0.000  1.0
  Na  Na1  1  1.000  0.374  0.000  1.0
  Na  Na2  1  0.374  0.000  0.000  1.0
  Na  Na3  1  0.291  0.291  0.500  1.0
  Na  Na4  1  1.000  0.709  0.500  1.0
  Na  Na5  1  0.709  0.000  0.500  1.0
  Ge  Ge6  1  0.667  0.333  0.504  1.0
  Ge  Ge7  1  0.333  0.667  0.496  1.0
  Ge  Ge8  1  1.000  1.000  0.000  1.0
  F  F9  1  0.086  0.191  0.203  1.0
  F  F10  1  0.809  0.896  0.203  1.0
  F  F11  1  0.104  0.914  0.203  1.0
  F  F12  1  0.895  0.809  0.797  1.0
  F  F13  1  0.914  0.104  0.797  1.0
  F  F14  1  0.191  0.086  0.797  1.0
  F  F15  1  0.552  0.408  0.710  1.0
  F  F16  1  0.592  0.144  0.710  1.0
  F  F17  1  0.856  0.448  0.710  1.0
  F  F18  1  0.477  0.223  0.299  1.0
  F  F19  1  0.777  0.253  0.299  1.0
  F  F20  1  0.747  0.523  0.299  1.0
  F  F21  1  0.253  0.777  0.701  1.0
  F  F22  1  0.524  0.747  0.701  1.0
  F  F23  1  0.223  0.476  0.701  1.0
  F  F24  1  0.407  0.552  0.290  1.0
  F  F25  1  0.448  0.856  0.290  1.0
  F  F26  1  0.144  0.593  0.290  1.0
[/CIF]
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