data_K2CrTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.29
_cell_length_b   3.29
_cell_length_c   10.47
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2CrTc
_chemical_formula_sum   'K2 Cr1 Tc1'
_cell_volume   113.54
_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  K1  1  0.65  0.65  0.62  1.0
  K  K2  1  0.0  0.0  0.46  1.0
  Cr  Cr0  1  0.0  0.0  0.86  1.0
  Tc  Tc3  1  0.65  0.65  0.22  1.0

data_K2CrTc
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.66
_cell_length_b   4.66
_cell_length_c   10.47
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   K2CrTc
_chemical_formula_sum   'K4 Cr2 Tc2'
_cell_volume   227.08
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.0  0.0  0.46  1.0
  K  K1  2  0.15  0.5  0.62  1.0
  Cr  Cr2  2  0.0  0.0  0.86  1.0
  Tc  Tc3  2  0.15  0.5  0.22  1.0

K K Cr Tc
K K Cr Tc 0 1 o + o 0 1 + o o 0 1 + + o 0 2 + + o 0 2 + o o 0 2 o + o 1 3 - - o 1 3 o - o 1 3 - o o 2 2 + o o 2 2 o + o 3 3 + o o 3 3 o + o 