The material structure described by K5As4 crystallizes in the triclinic P-1 space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to two equivalent As(1) and four equivalent As(2) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to two equivalent As(2) and three equivalent As(1) atoms. In the third K site, K(3) is bonded to two equivalent As(2) and four equivalent As(1) atoms to form distorted edge-sharing KAs6 octahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 9-coordinate geometry to two equivalent K(1), two equivalent K(3), three equivalent K(2), one As(1), and one As(2) atom. In the second As site, As(2) is bonded in a 8-coordinate geometry to one K(3), two equivalent K(2), four equivalent K(1), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K5As4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.242
_cell_length_b   6.490
_cell_length_c   8.016
_cell_angle_alpha   71.875
_cell_angle_beta   87.996
_cell_angle_gamma   89.854
_symmetry_Int_Tables_number   1
_cell_volume   308.440
_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  0.737  0.198  0.974  1.0
  K  K1  1  0.827  0.494  0.290  1.0
  K  K2  1  0.500  0.000  0.500  1.0
  K  K3  1  0.173  0.506  0.710  1.0
  K  K4  1  0.263  0.802  0.026  1.0
  As  As5  1  0.987  0.031  0.645  1.0
  As  As6  1  0.241  0.252  0.159  1.0
  As  As7  1  0.759  0.748  0.841  1.0
  As  As8  1  0.013  0.969  0.355  1.0
[/CIF]
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The material structure described by K5As4 crystallizes in the triclinic P-1 space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to two equivalent As(1) and four equivalent As(2) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to two equivalent As(2) and three equivalent As(1) atoms. In the third K site, K(3) is bonded to two equivalent As(2) and four equivalent As(1) atoms to form distorted edge-sharing KAs6 octahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 9-coordinate geometry to two equivalent K(1), two equivalent K(3), three equivalent K(2), one As(1), and one As(2) atom. In the second As site, As(2) is bonded in a 8-coordinate geometry to one K(3), two equivalent K(2), four equivalent K(1), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K5As4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.242
_cell_length_b   6.490
_cell_length_c   8.016
_cell_angle_alpha   71.875
_cell_angle_beta   87.996
_cell_angle_gamma   89.854
_symmetry_Int_Tables_number   1
_cell_volume   308.440
_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  0.737  0.198  0.974  1.0
  K  K1  1  0.827  0.494  0.290  1.0
  K  K2  1  0.500  0.000  0.500  1.0
  K  K3  1  0.173  0.506  0.710  1.0
  K  K4  1  0.263  0.802  0.026  1.0
  As  As5  1  0.987  0.031  0.645  1.0
  As  As6  1  0.241  0.252  0.159  1.0
  As  As7  1  0.759  0.748  0.841  1.0
  As  As8  1  0.013  0.969  0.355  1.0
[/CIF]
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