The compound described by K4CO4 crystallizes in the trigonal R3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. C(1) is bonded in a tetrahedral geometry to one O(2) and three equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(2), four equivalent K(1), and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal pyramidal geometry to three equivalent K(1) and one C(1) atom. is represented by the CIF card [CIF]
data_K4CO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.472
_cell_length_b   5.472
_cell_length_c   5.472
_cell_angle_alpha   84.595
_cell_angle_beta   84.595
_cell_angle_gamma   84.595
_symmetry_Int_Tables_number   1
_cell_volume   161.799
_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  0.609  0.162  0.609  1.0
  K  K1  1  0.609  0.609  0.162  1.0
  K  K2  1  0.162  0.609  0.609  1.0
  K  K3  1  0.184  0.184  0.184  1.0
  C  C4  1  0.926  0.926  0.926  1.0
  O  O5  1  0.079  0.756  0.079  1.0
  O  O6  1  0.787  0.787  0.787  1.0
  O  O7  1  0.079  0.079  0.756  1.0
  O  O8  1  0.756  0.079  0.079  1.0
[/CIF]
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The compound described by K4CO4 crystallizes in the trigonal R3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. C(1) is bonded in a tetrahedral geometry to one O(2) and three equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(2), four equivalent K(1), and one C(1) atom. In the second O site, O(2) is bonded in a distorted trigonal pyramidal geometry to three equivalent K(1) and one C(1) atom. is represented by the CIF card [CIF]
data_K4CO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.472
_cell_length_b   5.472
_cell_length_c   5.472
_cell_angle_alpha   84.595
_cell_angle_beta   84.595
_cell_angle_gamma   84.595
_symmetry_Int_Tables_number   1
_cell_volume   161.799
_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  0.609  0.162  0.609  1.0
  K  K1  1  0.609  0.609  0.162  1.0
  K  K2  1  0.162  0.609  0.609  1.0
  K  K3  1  0.184  0.184  0.184  1.0
  C  C4  1  0.926  0.926  0.926  1.0
  O  O5  1  0.079  0.756  0.079  1.0
  O  O6  1  0.787  0.787  0.787  1.0
  O  O7  1  0.079  0.079  0.756  1.0
  O  O8  1  0.756  0.079  0.079  1.0
[/CIF]
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