The compound described by K4ZnAs2 crystallizes in the trigonal R-3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to three equivalent Zn(1) and three equivalent As(1) atoms. In the second K site, K(2) is bonded to four equivalent As(1) atoms to form a mixture of edge and corner-sharing KAs4 tetrahedra. Zn(1) is bonded in a distorted linear geometry to six equivalent K(1) and two equivalent As(1) atoms. As(1) is bonded in a distorted body-centered cubic geometry to three equivalent K(1), four equivalent K(2), and one Zn(1) atom. is represented by the CIF card [CIF]
data_K4ZnAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.525
_cell_length_b   9.525
_cell_length_c   9.525
_cell_angle_alpha   35.127
_cell_angle_beta   35.127
_cell_angle_gamma   35.127
_symmetry_Int_Tables_number   1
_cell_volume   255.475
_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  0.385  0.385  0.385  1.0
  K  K1  1  0.209  0.209  0.209  1.0
  K  K2  1  0.791  0.791  0.791  1.0
  K  K3  1  0.615  0.615  0.615  1.0
  Zn  Zn4  1  0.000  0.000  0.000  1.0
  As  As5  1  0.085  0.085  0.085  1.0
  As  As6  1  0.915  0.915  0.915  1.0
[/CIF]
.
The compound described by K4ZnAs2 crystallizes in the trigonal R-3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to three equivalent Zn(1) and three equivalent As(1) atoms. In the second K site, K(2) is bonded to four equivalent As(1) atoms to form a mixture of edge and corner-sharing KAs4 tetrahedra. Zn(1) is bonded in a distorted linear geometry to six equivalent K(1) and two equivalent As(1) atoms. As(1) is bonded in a distorted body-centered cubic geometry to three equivalent K(1), four equivalent K(2), and one Zn(1) atom. is represented by the CIF card [CIF]
data_K4ZnAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.525
_cell_length_b   9.525
_cell_length_c   9.525
_cell_angle_alpha   35.127
_cell_angle_beta   35.127
_cell_angle_gamma   35.127
_symmetry_Int_Tables_number   1
_cell_volume   255.475
_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  0.385  0.385  0.385  1.0
  K  K1  1  0.209  0.209  0.209  1.0
  K  K2  1  0.791  0.791  0.791  1.0
  K  K3  1  0.615  0.615  0.615  1.0
  Zn  Zn4  1  0.000  0.000  0.000  1.0
  As  As5  1  0.085  0.085  0.085  1.0
  As  As6  1  0.915  0.915  0.915  1.0
[/CIF]
.