The crystal structure described by Rb2Be2Cd(O3F4)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one F(1), one F(3), two equivalent F(2), and two equivalent F(4) atoms. Be(1) is bonded in a tetrahedral geometry to one F(1), one F(2), one F(3), and one F(4) atom. Cd(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and one Cd(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1) and one Cd(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Cd(1) atom. There are four inequivalent F sites. In the first F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one Be(1) atom. In the second F site, F(1) is bonded in a distorted single-bond geometry to one Rb(1) and one Be(1) atom. In the third F site, F(2) is bonded in a single-bond geometry to two equivalent Rb(1) and one Be(1) atom. In the fourth F site, F(3) is bonded in a distorted single-bond geometry to one Rb(1) and one Be(1) atom. is represented by the CIF card [CIF]
data_Rb2Be2Cd(O3F4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.510
_cell_length_b   8.532
_cell_length_c   11.681
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   108.962
_symmetry_Int_Tables_number   1
_cell_volume   613.622
_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
  Rb  Rb0  1  0.860  0.584  0.139  1.0
  Rb  Rb1  1  0.140  0.416  0.861  1.0
  Rb  Rb2  1  0.140  0.916  0.639  1.0
  Rb  Rb3  1  0.860  0.084  0.361  1.0
  Be  Be4  1  0.755  0.594  0.834  1.0
  Be  Be5  1  0.245  0.406  0.166  1.0
  Be  Be6  1  0.245  0.906  0.334  1.0
  Be  Be7  1  0.755  0.094  0.666  1.0
  Cd  Cd8  1  0.500  0.000  0.000  1.0
  Cd  Cd9  1  0.500  0.500  0.500  1.0
  O  O10  1  0.269  0.877  0.872  1.0
  O  O11  1  0.731  0.123  0.128  1.0
  O  O12  1  0.731  0.623  0.372  1.0
  O  O13  1  0.269  0.377  0.628  1.0
  O  O14  1  0.427  0.657  0.635  1.0
  O  O15  1  0.573  0.343  0.365  1.0
  O  O16  1  0.573  0.843  0.135  1.0
  O  O17  1  0.427  0.157  0.865  1.0
  O  O18  1  0.856  0.967  0.951  1.0
  O  O19  1  0.144  0.033  0.049  1.0
  O  O20  1  0.144  0.533  0.451  1.0
  O  O21  1  0.856  0.467  0.549  1.0
  F  F22  1  0.547  0.637  0.803  1.0
  F  F23  1  0.453  0.363  0.197  1.0
  F  F24  1  0.453  0.863  0.303  1.0
  F  F25  1  0.547  0.137  0.697  1.0
  F  F26  1  0.709  0.940  0.588  1.0
  F  F27  1  0.291  0.060  0.412  1.0
  F  F28  1  0.291  0.560  0.088  1.0
  F  F29  1  0.709  0.440  0.912  1.0
  F  F30  1  0.904  0.738  0.921  1.0
  F  F31  1  0.096  0.262  0.079  1.0
  F  F32  1  0.096  0.762  0.421  1.0
  F  F33  1  0.904  0.238  0.579  1.0
  F  F34  1  0.900  0.593  0.730  1.0
  F  F35  1  0.100  0.407  0.270  1.0
  F  F36  1  0.100  0.907  0.230  1.0
  F  F37  1  0.900  0.093  0.770  1.0
[/CIF]
.
The crystal structure described by Rb2Be2Cd(O3F4)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one F(1), one F(3), two equivalent F(2), and two equivalent F(4) atoms. Be(1) is bonded in a tetrahedral geometry to one F(1), one F(2), one F(3), and one F(4) atom. Cd(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and one Cd(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1) and one Cd(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Cd(1) atom. There are four inequivalent F sites. In the first F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one Be(1) atom. In the second F site, F(1) is bonded in a distorted single-bond geometry to one Rb(1) and one Be(1) atom. In the third F site, F(2) is bonded in a single-bond geometry to two equivalent Rb(1) and one Be(1) atom. In the fourth F site, F(3) is bonded in a distorted single-bond geometry to one Rb(1) and one Be(1) atom. is represented by the CIF card [CIF]
data_Rb2Be2Cd(O3F4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.510
_cell_length_b   8.532
_cell_length_c   11.681
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   108.962
_symmetry_Int_Tables_number   1
_cell_volume   613.622
_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
  Rb  Rb0  1  0.860  0.584  0.139  1.0
  Rb  Rb1  1  0.140  0.416  0.861  1.0
  Rb  Rb2  1  0.140  0.916  0.639  1.0
  Rb  Rb3  1  0.860  0.084  0.361  1.0
  Be  Be4  1  0.755  0.594  0.834  1.0
  Be  Be5  1  0.245  0.406  0.166  1.0
  Be  Be6  1  0.245  0.906  0.334  1.0
  Be  Be7  1  0.755  0.094  0.666  1.0
  Cd  Cd8  1  0.500  0.000  0.000  1.0
  Cd  Cd9  1  0.500  0.500  0.500  1.0
  O  O10  1  0.269  0.877  0.872  1.0
  O  O11  1  0.731  0.123  0.128  1.0
  O  O12  1  0.731  0.623  0.372  1.0
  O  O13  1  0.269  0.377  0.628  1.0
  O  O14  1  0.427  0.657  0.635  1.0
  O  O15  1  0.573  0.343  0.365  1.0
  O  O16  1  0.573  0.843  0.135  1.0
  O  O17  1  0.427  0.157  0.865  1.0
  O  O18  1  0.856  0.967  0.951  1.0
  O  O19  1  0.144  0.033  0.049  1.0
  O  O20  1  0.144  0.533  0.451  1.0
  O  O21  1  0.856  0.467  0.549  1.0
  F  F22  1  0.547  0.637  0.803  1.0
  F  F23  1  0.453  0.363  0.197  1.0
  F  F24  1  0.453  0.863  0.303  1.0
  F  F25  1  0.547  0.137  0.697  1.0
  F  F26  1  0.709  0.940  0.588  1.0
  F  F27  1  0.291  0.060  0.412  1.0
  F  F28  1  0.291  0.560  0.088  1.0
  F  F29  1  0.709  0.440  0.912  1.0
  F  F30  1  0.904  0.738  0.921  1.0
  F  F31  1  0.096  0.262  0.079  1.0
  F  F32  1  0.096  0.762  0.421  1.0
  F  F33  1  0.904  0.238  0.579  1.0
  F  F34  1  0.900  0.593  0.730  1.0
  F  F35  1  0.100  0.407  0.270  1.0
  F  F36  1  0.100  0.907  0.230  1.0
  F  F37  1  0.900  0.093  0.770  1.0
[/CIF]
.