The structure described by BeYbF4 crystallizes in the monoclinic P2_1/c space group. Be(1) is bonded in a tetrahedral geometry to one F(1), one F(2), one F(3), and one F(4) atom. Yb(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the second F site, F(2) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the third F site, F(3) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. is represented by the CIF file [CIF]
data_YbBeF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.128
_cell_length_b   6.374
_cell_length_c   6.590
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   104.603
_symmetry_Int_Tables_number   1
_cell_volume   249.084
_cell_formula_units_Z   4
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
  Yb  Yb0  1  0.404  0.223  0.652  1.0
  Yb  Yb1  1  0.904  0.723  0.848  1.0
  Yb  Yb2  1  0.596  0.777  0.348  1.0
  Yb  Yb3  1  0.096  0.277  0.152  1.0
  Be  Be4  1  0.887  0.199  0.662  1.0
  Be  Be5  1  0.387  0.699  0.838  1.0
  Be  Be6  1  0.113  0.801  0.338  1.0
  Be  Be7  1  0.613  0.301  0.162  1.0
  F  F8  1  0.073  0.249  0.498  1.0
  F  F9  1  0.573  0.749  0.002  1.0
  F  F10  1  0.927  0.751  0.502  1.0
  F  F11  1  0.427  0.251  0.998  1.0
  F  F12  1  0.995  0.110  0.843  1.0
  F  F13  1  0.495  0.610  0.657  1.0
  F  F14  1  0.005  0.890  0.157  1.0
  F  F15  1  0.505  0.390  0.343  1.0
  F  F16  1  0.676  0.019  0.604  1.0
  F  F17  1  0.176  0.519  0.896  1.0
  F  F18  1  0.324  0.981  0.396  1.0
  F  F19  1  0.824  0.481  0.104  1.0
  F  F20  1  0.779  0.386  0.713  1.0
  F  F21  1  0.279  0.886  0.787  1.0
  F  F22  1  0.221  0.614  0.287  1.0
  F  F23  1  0.721  0.114  0.213  1.0
[/CIF]
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The structure described by BeYbF4 crystallizes in the monoclinic P2_1/c space group. Be(1) is bonded in a tetrahedral geometry to one F(1), one F(2), one F(3), and one F(4) atom. Yb(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the second F site, F(2) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the third F site, F(3) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. is represented by the CIF file [CIF]
data_YbBeF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.128
_cell_length_b   6.374
_cell_length_c   6.590
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   104.603
_symmetry_Int_Tables_number   1
_cell_volume   249.084
_cell_formula_units_Z   4
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
  Yb  Yb0  1  0.404  0.223  0.652  1.0
  Yb  Yb1  1  0.904  0.723  0.848  1.0
  Yb  Yb2  1  0.596  0.777  0.348  1.0
  Yb  Yb3  1  0.096  0.277  0.152  1.0
  Be  Be4  1  0.887  0.199  0.662  1.0
  Be  Be5  1  0.387  0.699  0.838  1.0
  Be  Be6  1  0.113  0.801  0.338  1.0
  Be  Be7  1  0.613  0.301  0.162  1.0
  F  F8  1  0.073  0.249  0.498  1.0
  F  F9  1  0.573  0.749  0.002  1.0
  F  F10  1  0.927  0.751  0.502  1.0
  F  F11  1  0.427  0.251  0.998  1.0
  F  F12  1  0.995  0.110  0.843  1.0
  F  F13  1  0.495  0.610  0.657  1.0
  F  F14  1  0.005  0.890  0.157  1.0
  F  F15  1  0.505  0.390  0.343  1.0
  F  F16  1  0.676  0.019  0.604  1.0
  F  F17  1  0.176  0.519  0.896  1.0
  F  F18  1  0.324  0.981  0.396  1.0
  F  F19  1  0.824  0.481  0.104  1.0
  F  F20  1  0.779  0.386  0.713  1.0
  F  F21  1  0.279  0.886  0.787  1.0
  F  F22  1  0.221  0.614  0.287  1.0
  F  F23  1  0.721  0.114  0.213  1.0
[/CIF]
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