The structure described by Rb3NaMg(WO4)2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a linear geometry to two equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. Na(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. Mg(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. W(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Rb(2), one Na(1), one Mg(1), and one W(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Rb(1), three equivalent Rb(2), and one W(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Rb(2) and one W(1) atom. is represented by the CIF file [CIF]
data_Rb3NaMg(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.194
_cell_length_b   6.253
_cell_length_c   8.078
_cell_angle_alpha   90.000
_cell_angle_beta   98.600
_cell_angle_gamma   115.760
_symmetry_Int_Tables_number   1
_cell_volume   322.698
_cell_formula_units_Z   1
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  0.000  0.000  0.500  1.0
  Rb  Rb1  1  0.459  0.730  0.839  1.0
  Rb  Rb2  1  0.541  0.270  0.161  1.0
  Na  Na3  1  0.000  0.000  0.000  1.0
  Mg  Mg4  1  0.000  0.500  0.000  1.0
  W  W5  1  0.351  0.675  0.287  1.0
  W  W6  1  0.649  0.325  0.713  1.0
  O  O7  1  0.180  0.801  0.144  1.0
  O  O8  1  0.180  0.380  0.144  1.0
  O  O9  1  0.618  0.809  0.237  1.0
  O  O10  1  0.820  0.199  0.856  1.0
  O  O11  1  0.820  0.620  0.856  1.0
  O  O12  1  0.382  0.191  0.763  1.0
  O  O13  1  0.310  0.655  0.505  1.0
  O  O14  1  0.690  0.345  0.495  1.0
[/CIF]
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The structure described by Rb3NaMg(WO4)2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a linear geometry to two equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. Na(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. Mg(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. W(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Rb(2), one Na(1), one Mg(1), and one W(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Rb(1), three equivalent Rb(2), and one W(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Rb(2) and one W(1) atom. is represented by the CIF file [CIF]
data_Rb3NaMg(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.194
_cell_length_b   6.253
_cell_length_c   8.078
_cell_angle_alpha   90.000
_cell_angle_beta   98.600
_cell_angle_gamma   115.760
_symmetry_Int_Tables_number   1
_cell_volume   322.698
_cell_formula_units_Z   1
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  0.000  0.000  0.500  1.0
  Rb  Rb1  1  0.459  0.730  0.839  1.0
  Rb  Rb2  1  0.541  0.270  0.161  1.0
  Na  Na3  1  0.000  0.000  0.000  1.0
  Mg  Mg4  1  0.000  0.500  0.000  1.0
  W  W5  1  0.351  0.675  0.287  1.0
  W  W6  1  0.649  0.325  0.713  1.0
  O  O7  1  0.180  0.801  0.144  1.0
  O  O8  1  0.180  0.380  0.144  1.0
  O  O9  1  0.618  0.809  0.237  1.0
  O  O10  1  0.820  0.199  0.856  1.0
  O  O11  1  0.820  0.620  0.856  1.0
  O  O12  1  0.382  0.191  0.763  1.0
  O  O13  1  0.310  0.655  0.505  1.0
  O  O14  1  0.690  0.345  0.495  1.0
[/CIF]
.