The material structure described by K2PtI5 crystallizes in the orthorhombic Cmcm space group. K(1) is bonded in a 7-coordinate geometry to one I(3), two equivalent I(1), and four equivalent I(2) atoms. Pt(1) is bonded to two equivalent I(1), two equivalent I(2), and two equivalent I(3) atoms to form corner-sharing PtI6 octahedra. The corner-sharing octahedral tilt angles are 12°. There are three inequivalent I sites. In the first I site, I(1) is bonded in a distorted T-shaped geometry to two equivalent K(1) and one Pt(1) atom. In the second I site, I(2) is bonded to four equivalent K(1) and one Pt(1) atom to form a mixture of distorted corner and edge-sharing IK4Pt trigonal bipyramids. In the third I site, I(3) is bonded in a rectangular see-saw-like geometry to two equivalent K(1) and two equivalent Pt(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2PtI5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.907
_cell_length_b   7.907
_cell_length_c   11.525
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   108.740
_symmetry_Int_Tables_number   1
_cell_volume   682.285
_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  0.536  0.923  0.250  1.0
  K  K1  1  0.077  0.464  0.750  1.0
  K  K2  1  0.464  0.077  0.750  1.0
  K  K3  1  0.923  0.536  0.250  1.0
  Pt  Pt4  1  0.000  0.000  0.500  1.0
  Pt  Pt5  1  0.000  0.000  0.000  1.0
  I  I6  1  0.292  0.292  0.521  1.0
  I  I7  1  0.708  0.708  0.479  1.0
  I  I8  1  0.292  0.292  0.979  1.0
  I  I9  1  0.708  0.708  0.021  1.0
  I  I10  1  0.209  0.791  0.500  1.0
  I  I11  1  0.209  0.791  0.000  1.0
  I  I12  1  0.791  0.209  0.500  1.0
  I  I13  1  0.791  0.209  0.000  1.0
  I  I14  1  0.034  0.034  0.250  1.0
  I  I15  1  0.966  0.966  0.750  1.0
[/CIF]
.
The material structure described by K2PtI5 crystallizes in the orthorhombic Cmcm space group. K(1) is bonded in a 7-coordinate geometry to one I(3), two equivalent I(1), and four equivalent I(2) atoms. Pt(1) is bonded to two equivalent I(1), two equivalent I(2), and two equivalent I(3) atoms to form corner-sharing PtI6 octahedra. The corner-sharing octahedral tilt angles are 12°. There are three inequivalent I sites. In the first I site, I(1) is bonded in a distorted T-shaped geometry to two equivalent K(1) and one Pt(1) atom. In the second I site, I(2) is bonded to four equivalent K(1) and one Pt(1) atom to form a mixture of distorted corner and edge-sharing IK4Pt trigonal bipyramids. In the third I site, I(3) is bonded in a rectangular see-saw-like geometry to two equivalent K(1) and two equivalent Pt(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2PtI5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.907
_cell_length_b   7.907
_cell_length_c   11.525
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   108.740
_symmetry_Int_Tables_number   1
_cell_volume   682.285
_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  0.536  0.923  0.250  1.0
  K  K1  1  0.077  0.464  0.750  1.0
  K  K2  1  0.464  0.077  0.750  1.0
  K  K3  1  0.923  0.536  0.250  1.0
  Pt  Pt4  1  0.000  0.000  0.500  1.0
  Pt  Pt5  1  0.000  0.000  0.000  1.0
  I  I6  1  0.292  0.292  0.521  1.0
  I  I7  1  0.708  0.708  0.479  1.0
  I  I8  1  0.292  0.292  0.979  1.0
  I  I9  1  0.708  0.708  0.021  1.0
  I  I10  1  0.209  0.791  0.500  1.0
  I  I11  1  0.209  0.791  0.000  1.0
  I  I12  1  0.791  0.209  0.500  1.0
  I  I13  1  0.791  0.209  0.000  1.0
  I  I14  1  0.034  0.034  0.250  1.0
  I  I15  1  0.966  0.966  0.750  1.0
[/CIF]
.