data_K2MnSb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.43
_cell_length_b   6.43
_cell_length_c   6.43
_cell_angle_alpha   137.03
_cell_angle_beta   137.03
_cell_angle_gamma   62.39
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2MnSb
_chemical_formula_sum   'K2 Mn1 Sb1'
_cell_volume   121.95
_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  0.0  0.35  0.75  1.0
  K  K1  1  0.35  0.0  0.75  1.0
  Mn  Mn2  1  0.0  0.0  0.0  1.0
  Sb  Sb3  1  0.0  0.0  0.5  1.0

data_K2MnSb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.66
_cell_length_b   6.66
_cell_length_c   6.43
_cell_angle_alpha   90.0
_cell_angle_beta   121.19
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   K2MnSb
_chemical_formula_sum   'K4 Mn2 Sb2'
_cell_volume   243.89
_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  4  0.43  0.18  0.6  1.0
  Mn  Mn1  2  0.0  0.0  0.0  1.0
  Sb  Sb2  2  0.0  0.5  0.5  1.0

K K Mn Sb
K2MnSb crystallizes in the monoclinic Cm space group. K(1) is bonded in a single-bond geometry to three equivalent Mn(1) and one Sb(1) atom. There are a spread of K(1)-Mn(1) bond distances ranging from 3.17-3.63 Å. The K(1)-Sb(1) bond length is 1.55 Å. Mn(1) is bonded in a 8-coordinate geometry to six equivalent K(1) and two equivalent Sb(1) atoms. There is one shorter (3.21 Å) and one longer (3.22 Å) Mn(1)-Sb(1) bond length. Sb(1) is bonded in a water-like geometry to two equivalent K(1) and two equivalent Mn(1) atoms.