The compound described by K2SnBi crystallizes in the orthorhombic Pbcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to four equivalent Sn(1) and four equivalent Bi(1) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to four equivalent Sn(1) and four equivalent Bi(1) atoms. Sn(1) is bonded to four equivalent K(1), four equivalent K(2), two equivalent Sn(1), and two equivalent Bi(1) atoms to form a mixture of distorted corner, face, and edge-sharing SnK8Sn2Bi2 cuboctahedra. Bi(1) is bonded in a 10-coordinate geometry to four equivalent K(1), four equivalent K(2), and two equivalent Sn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2SnBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.588
_cell_length_b   6.816
_cell_length_c   13.446
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   603.783
_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  0.250  0.616  0.334  1.0
  K  K1  1  0.750  0.384  0.666  1.0
  K  K2  1  0.750  0.616  0.166  1.0
  K  K3  1  0.250  0.384  0.834  1.0
  K  K4  1  0.750  0.158  0.991  1.0
  K  K5  1  0.750  0.842  0.491  1.0
  K  K6  1  0.250  0.158  0.509  1.0
  K  K7  1  0.250  0.842  0.009  1.0
  Sn  Sn8  1  0.000  0.096  0.250  1.0
  Sn  Sn9  1  0.000  0.904  0.750  1.0
  Sn  Sn10  1  0.500  0.904  0.750  1.0
  Sn  Sn11  1  0.500  0.096  0.250  1.0
  Bi  Bi12  1  0.250  0.658  0.607  1.0
  Bi  Bi13  1  0.750  0.342  0.393  1.0
  Bi  Bi14  1  0.750  0.658  0.893  1.0
  Bi  Bi15  1  0.250  0.342  0.107  1.0
[/CIF]
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The compound described by K2SnBi crystallizes in the orthorhombic Pbcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to four equivalent Sn(1) and four equivalent Bi(1) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to four equivalent Sn(1) and four equivalent Bi(1) atoms. Sn(1) is bonded to four equivalent K(1), four equivalent K(2), two equivalent Sn(1), and two equivalent Bi(1) atoms to form a mixture of distorted corner, face, and edge-sharing SnK8Sn2Bi2 cuboctahedra. Bi(1) is bonded in a 10-coordinate geometry to four equivalent K(1), four equivalent K(2), and two equivalent Sn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2SnBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.588
_cell_length_b   6.816
_cell_length_c   13.446
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   603.783
_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  0.250  0.616  0.334  1.0
  K  K1  1  0.750  0.384  0.666  1.0
  K  K2  1  0.750  0.616  0.166  1.0
  K  K3  1  0.250  0.384  0.834  1.0
  K  K4  1  0.750  0.158  0.991  1.0
  K  K5  1  0.750  0.842  0.491  1.0
  K  K6  1  0.250  0.158  0.509  1.0
  K  K7  1  0.250  0.842  0.009  1.0
  Sn  Sn8  1  0.000  0.096  0.250  1.0
  Sn  Sn9  1  0.000  0.904  0.750  1.0
  Sn  Sn10  1  0.500  0.904  0.750  1.0
  Sn  Sn11  1  0.500  0.096  0.250  1.0
  Bi  Bi12  1  0.250  0.658  0.607  1.0
  Bi  Bi13  1  0.750  0.342  0.393  1.0
  Bi  Bi14  1  0.750  0.658  0.893  1.0
  Bi  Bi15  1  0.250  0.342  0.107  1.0
[/CIF]
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