data_KNaSn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.73
_cell_length_b   5.73
_cell_length_c   5.73
_cell_angle_alpha   124.48
_cell_angle_beta   124.48
_cell_angle_gamma   82.41
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KNaSn2
_chemical_formula_sum   'K1 Na1 Sn2'
_cell_volume   123.12
_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  0.67  0.0  0.16  1.0
  Na  Na1  1  0.0  0.0  0.0  1.0
  Sn  Sn2  1  0.0  0.67  0.16  1.0
  Sn  Sn3  1  0.0  0.0  0.31  1.0

data_KNaSn2
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.34
_cell_length_b   5.34
_cell_length_c   5.73
_cell_angle_alpha   117.76
_cell_angle_beta   117.76
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KNaSn2
_chemical_formula_sum   'K1 Na1 Sn2'
_cell_volume   123.12
_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  0.16  0.49  0.49  1.0
  Na  Na1  1  0.0  0.0  0.0  1.0
  Sn  Sn2  1  0.31  0.31  0.31  1.0
  Sn  Sn3  1  0.49  0.16  0.49  1.0

K Na Sn Sn
K Na Sn Sn 0 3 + o o 1 3 o o o 2 3 o + o 
KNaSn2 crystallizes in the triclinic P1 space group. K(1) is bonded in a single-bond geometry to one Sn(2) and three equivalent Sn(1) atoms. The K(1)-Sn(2) bond length is 1.56 Å. There is one shorter (2.49 Å) and two longer (3.99 Å) K(1)-Sn(1) bond lengths. Na(1) is bonded in a distorted single-bond geometry to one Sn(2) and two equivalent Sn(1) atoms. The Na(1)-Sn(2) bond length is 1.80 Å. There is one shorter (2.51 Å) and one longer (3.42 Å) Na(1)-Sn(1) bond length. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 6-coordinate geometry to three equivalent K(1), two equivalent Na(1), and one Sn(2) atom. The Sn(1)-Sn(2) bond length is 1.56 Å. In the second Sn site, Sn(2) is bonded in a 3-coordinate geometry to one K(1), one Na(1), and one Sn(1) atom.