The material described by K3Mg crystallizes in the hexagonal P6_3/mmc space group. K(1) is bonded in a 10-coordinate geometry to eight equivalent K(1) and two equivalent Mg(1) atoms. Mg(1) is bonded in a 6-coordinate geometry to six equivalent K(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K3Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.636
_cell_length_b   8.636
_cell_length_c   6.816
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   440.198
_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
  K  K0  1  0.175  0.350  0.250  1.0
  K  K1  1  0.175  0.825  0.250  1.0
  K  K2  1  0.650  0.825  0.250  1.0
  K  K3  1  0.350  0.175  0.750  1.0
  K  K4  1  0.825  0.175  0.750  1.0
  K  K5  1  0.825  0.650  0.750  1.0
  Mg  Mg6  1  0.667  0.333  0.250  1.0
  Mg  Mg7  1  0.333  0.667  0.750  1.0
[/CIF]
.
The material described by K3Mg crystallizes in the hexagonal P6_3/mmc space group. K(1) is bonded in a 10-coordinate geometry to eight equivalent K(1) and two equivalent Mg(1) atoms. Mg(1) is bonded in a 6-coordinate geometry to six equivalent K(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K3Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.636
_cell_length_b   8.636
_cell_length_c   6.816
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   440.198
_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
  K  K0  1  0.175  0.350  0.250  1.0
  K  K1  1  0.175  0.825  0.250  1.0
  K  K2  1  0.650  0.825  0.250  1.0
  K  K3  1  0.350  0.175  0.750  1.0
  K  K4  1  0.825  0.175  0.750  1.0
  K  K5  1  0.825  0.650  0.750  1.0
  Mg  Mg6  1  0.667  0.333  0.250  1.0
  Mg  Mg7  1  0.333  0.667  0.750  1.0
[/CIF]
.