The structure described by K4Mg(WO4)2 crystallizes in the monoclinic C2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), and two equivalent O(2) atoms. Mg(1) is bonded in a water-like geometry to two equivalent O(3) atoms. W(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one K(2), and one W(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one W(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Mg(1), and one W(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one K(1), one K(2), and one W(1) atom. is represented by the CIF card [CIF]
data_K4Mg(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.810
_cell_length_b   8.639
_cell_length_c   7.206
_cell_angle_alpha   107.440
_cell_angle_beta   90.000
_cell_angle_gamma   113.212
_symmetry_Int_Tables_number   1
_cell_volume   368.337
_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
  K  K0  1  0.604  0.123  0.286  1.0
  K  K1  1  0.482  0.877  0.714  1.0
  K  K2  1  0.207  0.450  0.809  1.0
  K  K3  1  0.757  0.550  0.191  1.0
  Mg  Mg4  1  0.118  0.000  0.500  1.0
  W  W5  1  0.171  0.325  0.273  1.0
  W  W6  1  0.846  0.675  0.727  1.0
  O  O7  1  0.369  0.267  0.135  1.0
  O  O8  1  0.102  0.733  0.865  1.0
  O  O9  1  0.645  0.670  0.895  1.0
  O  O10  1  0.975  0.330  0.105  1.0
  O  O11  1  0.863  0.835  0.597  1.0
  O  O12  1  0.028  0.165  0.403  1.0
  O  O13  1  0.312  0.542  0.453  1.0
  O  O14  1  0.770  0.458  0.547  1.0
[/CIF]
.
The structure described by K4Mg(WO4)2 crystallizes in the monoclinic C2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), and two equivalent O(2) atoms. Mg(1) is bonded in a water-like geometry to two equivalent O(3) atoms. W(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one K(2), and one W(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one W(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Mg(1), and one W(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one K(1), one K(2), and one W(1) atom. is represented by the CIF card [CIF]
data_K4Mg(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.810
_cell_length_b   8.639
_cell_length_c   7.206
_cell_angle_alpha   107.440
_cell_angle_beta   90.000
_cell_angle_gamma   113.212
_symmetry_Int_Tables_number   1
_cell_volume   368.337
_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
  K  K0  1  0.604  0.123  0.286  1.0
  K  K1  1  0.482  0.877  0.714  1.0
  K  K2  1  0.207  0.450  0.809  1.0
  K  K3  1  0.757  0.550  0.191  1.0
  Mg  Mg4  1  0.118  0.000  0.500  1.0
  W  W5  1  0.171  0.325  0.273  1.0
  W  W6  1  0.846  0.675  0.727  1.0
  O  O7  1  0.369  0.267  0.135  1.0
  O  O8  1  0.102  0.733  0.865  1.0
  O  O9  1  0.645  0.670  0.895  1.0
  O  O10  1  0.975  0.330  0.105  1.0
  O  O11  1  0.863  0.835  0.597  1.0
  O  O12  1  0.028  0.165  0.403  1.0
  O  O13  1  0.312  0.542  0.453  1.0
  O  O14  1  0.770  0.458  0.547  1.0
[/CIF]
.