The compound described by AsK is Modderite structured and crystallizes in the orthorhombic Pbcm space group. K(1) is bonded to six equivalent As(1) atoms to form a mixture of face, corner, and edge-sharing KAs6 octahedra. The corner-sharing octahedral tilt angles range from 39-56°. As(1) is bonded to six equivalent K(1) atoms to form a mixture of distorted corner and edge-sharing AsK6 pentagonal pyramids. is represented by the CIF card [CIF]
data_KAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.753
_cell_length_b   7.894
_cell_length_c   8.561
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   321.165
_cell_formula_units_Z   4
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  0.695  0.250  0.500  1.0
  K  K1  1  0.305  0.750  0.000  1.0
  K  K2  1  0.305  0.750  0.500  1.0
  K  K3  1  0.695  0.250  0.000  1.0
  As  As4  1  0.807  0.588  0.250  1.0
  As  As5  1  0.193  0.088  0.250  1.0
  As  As6  1  0.193  0.412  0.750  1.0
  As  As7  1  0.807  0.912  0.750  1.0
[/CIF]
.
The compound described by AsK is Modderite structured and crystallizes in the orthorhombic Pbcm space group. K(1) is bonded to six equivalent As(1) atoms to form a mixture of face, corner, and edge-sharing KAs6 octahedra. The corner-sharing octahedral tilt angles range from 39-56°. As(1) is bonded to six equivalent K(1) atoms to form a mixture of distorted corner and edge-sharing AsK6 pentagonal pyramids. is represented by the CIF card [CIF]
data_KAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.753
_cell_length_b   7.894
_cell_length_c   8.561
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   321.165
_cell_formula_units_Z   4
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  0.695  0.250  0.500  1.0
  K  K1  1  0.305  0.750  0.000  1.0
  K  K2  1  0.305  0.750  0.500  1.0
  K  K3  1  0.695  0.250  0.000  1.0
  As  As4  1  0.807  0.588  0.250  1.0
  As  As5  1  0.193  0.088  0.250  1.0
  As  As6  1  0.193  0.412  0.750  1.0
  As  As7  1  0.807  0.912  0.750  1.0
[/CIF]
.