The material structure described by K2PtAs2 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to six equivalent As(1) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent Pt(1) and six equivalent As(1) atoms. Pt(1) is bonded in a 6-coordinate geometry to two equivalent K(2) and four equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to three equivalent K(1), three equivalent K(2), two equivalent Pt(1), and one As(1) atom. is represented by the CIF file [CIF]
data_K2As2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.848
_cell_length_b   7.848
_cell_length_c   6.125
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   131.500
_symmetry_Int_Tables_number   1
_cell_volume   282.530
_cell_formula_units_Z   2
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  0.581  0.419  0.750  1.0
  K  K1  1  0.419  0.581  0.250  1.0
  K  K2  1  0.203  0.797  0.750  1.0
  K  K3  1  0.797  0.203  0.250  1.0
  As  As4  1  0.701  0.922  0.750  1.0
  As  As5  1  0.922  0.701  0.250  1.0
  As  As6  1  0.299  0.078  0.250  1.0
  As  As7  1  0.078  0.299  0.750  1.0
  Pt  Pt8  1  0.000  0.000  0.000  1.0
  Pt  Pt9  1  0.000  0.000  0.500  1.0
[/CIF]
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The material structure described by K2PtAs2 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to six equivalent As(1) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent Pt(1) and six equivalent As(1) atoms. Pt(1) is bonded in a 6-coordinate geometry to two equivalent K(2) and four equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to three equivalent K(1), three equivalent K(2), two equivalent Pt(1), and one As(1) atom. is represented by the CIF file [CIF]
data_K2As2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.848
_cell_length_b   7.848
_cell_length_c   6.125
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   131.500
_symmetry_Int_Tables_number   1
_cell_volume   282.530
_cell_formula_units_Z   2
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  0.581  0.419  0.750  1.0
  K  K1  1  0.419  0.581  0.250  1.0
  K  K2  1  0.203  0.797  0.750  1.0
  K  K3  1  0.797  0.203  0.250  1.0
  As  As4  1  0.701  0.922  0.750  1.0
  As  As5  1  0.922  0.701  0.250  1.0
  As  As6  1  0.299  0.078  0.250  1.0
  As  As7  1  0.078  0.299  0.750  1.0
  Pt  Pt8  1  0.000  0.000  0.000  1.0
  Pt  Pt9  1  0.000  0.000  0.500  1.0
[/CIF]
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