The material described by K2Mg(CO3)2 crystallizes in the trigonal R-3m space group. K(1) is bonded in a 9-coordinate geometry to nine equivalent O(1) atoms. Mg(1) is bonded in an octahedral geometry to six equivalent O(1) atoms. C(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. O(1) is bonded in a 2-coordinate geometry to three equivalent K(1), one Mg(1), and one C(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Mg(CO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.432
_cell_length_b   6.432
_cell_length_c   6.432
_cell_angle_alpha   47.293
_cell_angle_beta   47.293
_cell_angle_gamma   47.293
_symmetry_Int_Tables_number   1
_cell_volume   131.445
_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  0.790  0.790  0.790  1.0
  K  K1  1  0.210  0.210  0.210  1.0
  Mg  Mg2  1  0.000  0.000  0.000  1.0
  C  C3  1  0.596  0.596  0.596  1.0
  C  C4  1  0.404  0.404  0.404  1.0
  O  O5  1  0.261  0.695  0.261  1.0
  O  O6  1  0.261  0.261  0.695  1.0
  O  O7  1  0.695  0.261  0.261  1.0
  O  O8  1  0.305  0.739  0.739  1.0
  O  O9  1  0.739  0.739  0.305  1.0
  O  O10  1  0.739  0.305  0.739  1.0
[/CIF]
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The material described by K2Mg(CO3)2 crystallizes in the trigonal R-3m space group. K(1) is bonded in a 9-coordinate geometry to nine equivalent O(1) atoms. Mg(1) is bonded in an octahedral geometry to six equivalent O(1) atoms. C(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. O(1) is bonded in a 2-coordinate geometry to three equivalent K(1), one Mg(1), and one C(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Mg(CO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.432
_cell_length_b   6.432
_cell_length_c   6.432
_cell_angle_alpha   47.293
_cell_angle_beta   47.293
_cell_angle_gamma   47.293
_symmetry_Int_Tables_number   1
_cell_volume   131.445
_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  0.790  0.790  0.790  1.0
  K  K1  1  0.210  0.210  0.210  1.0
  Mg  Mg2  1  0.000  0.000  0.000  1.0
  C  C3  1  0.596  0.596  0.596  1.0
  C  C4  1  0.404  0.404  0.404  1.0
  O  O5  1  0.261  0.695  0.261  1.0
  O  O6  1  0.261  0.261  0.695  1.0
  O  O7  1  0.695  0.261  0.261  1.0
  O  O8  1  0.305  0.739  0.739  1.0
  O  O9  1  0.739  0.739  0.305  1.0
  O  O10  1  0.739  0.305  0.739  1.0
[/CIF]
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