The crystal structure described by Rb2BeF4 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one F(3), three equivalent F(1), three equivalent F(2), and three equivalent F(4) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(4), and three equivalent F(3) atoms. Be(1) is bonded in a tetrahedral geometry to one F(1), one F(2), one F(3), and one F(4) atom. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Be(1) atom. In the second F site, F(2) is bonded in a distorted single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Be(1) atom. In the third F site, F(3) is bonded in a distorted single-bond geometry to one Rb(1), three equivalent Rb(2), and one Be(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Be(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2BeF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.988
_cell_length_b   7.783
_cell_length_c   10.488
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.804
_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
  Rb  Rb0  1  0.754  0.339  0.588  1.0
  Rb  Rb1  1  0.254  0.661  0.412  1.0
  Rb  Rb2  1  0.254  0.161  0.088  1.0
  Rb  Rb3  1  0.754  0.839  0.912  1.0
  Rb  Rb4  1  0.258  0.497  0.811  1.0
  Rb  Rb5  1  0.758  0.503  0.189  1.0
  Rb  Rb6  1  0.758  0.003  0.311  1.0
  Rb  Rb7  1  0.258  0.997  0.689  1.0
  Be  Be8  1  0.754  0.267  0.913  1.0
  Be  Be9  1  0.254  0.733  0.087  1.0
  Be  Be10  1  0.254  0.233  0.413  1.0
  Be  Be11  1  0.754  0.767  0.587  1.0
  F  F12  1  0.546  0.195  0.839  1.0
  F  F13  1  0.046  0.805  0.161  1.0
  F  F14  1  0.046  0.305  0.339  1.0
  F  F15  1  0.546  0.695  0.661  1.0
  F  F16  1  0.975  0.205  0.845  1.0
  F  F17  1  0.475  0.795  0.155  1.0
  F  F18  1  0.475  0.295  0.345  1.0
  F  F19  1  0.975  0.705  0.655  1.0
  F  F20  1  0.743  0.467  0.916  1.0
  F  F21  1  0.243  0.533  0.084  1.0
  F  F22  1  0.243  0.033  0.416  1.0
  F  F23  1  0.743  0.967  0.584  1.0
  F  F24  1  0.252  0.312  0.552  1.0
  F  F25  1  0.752  0.688  0.448  1.0
  F  F26  1  0.752  0.188  0.052  1.0
  F  F27  1  0.252  0.812  0.948  1.0
[/CIF]
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The crystal structure described by Rb2BeF4 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one F(3), three equivalent F(1), three equivalent F(2), and three equivalent F(4) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(4), and three equivalent F(3) atoms. Be(1) is bonded in a tetrahedral geometry to one F(1), one F(2), one F(3), and one F(4) atom. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Be(1) atom. In the second F site, F(2) is bonded in a distorted single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Be(1) atom. In the third F site, F(3) is bonded in a distorted single-bond geometry to one Rb(1), three equivalent Rb(2), and one Be(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Be(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2BeF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.988
_cell_length_b   7.783
_cell_length_c   10.488
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.804
_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
  Rb  Rb0  1  0.754  0.339  0.588  1.0
  Rb  Rb1  1  0.254  0.661  0.412  1.0
  Rb  Rb2  1  0.254  0.161  0.088  1.0
  Rb  Rb3  1  0.754  0.839  0.912  1.0
  Rb  Rb4  1  0.258  0.497  0.811  1.0
  Rb  Rb5  1  0.758  0.503  0.189  1.0
  Rb  Rb6  1  0.758  0.003  0.311  1.0
  Rb  Rb7  1  0.258  0.997  0.689  1.0
  Be  Be8  1  0.754  0.267  0.913  1.0
  Be  Be9  1  0.254  0.733  0.087  1.0
  Be  Be10  1  0.254  0.233  0.413  1.0
  Be  Be11  1  0.754  0.767  0.587  1.0
  F  F12  1  0.546  0.195  0.839  1.0
  F  F13  1  0.046  0.805  0.161  1.0
  F  F14  1  0.046  0.305  0.339  1.0
  F  F15  1  0.546  0.695  0.661  1.0
  F  F16  1  0.975  0.205  0.845  1.0
  F  F17  1  0.475  0.795  0.155  1.0
  F  F18  1  0.475  0.295  0.345  1.0
  F  F19  1  0.975  0.705  0.655  1.0
  F  F20  1  0.743  0.467  0.916  1.0
  F  F21  1  0.243  0.533  0.084  1.0
  F  F22  1  0.243  0.033  0.416  1.0
  F  F23  1  0.743  0.967  0.584  1.0
  F  F24  1  0.252  0.312  0.552  1.0
  F  F25  1  0.752  0.688  0.448  1.0
  F  F26  1  0.752  0.188  0.052  1.0
  F  F27  1  0.252  0.812  0.948  1.0
[/CIF]
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