data_KCaZn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.58
_cell_length_b   5.58
_cell_length_c   3.68
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KCaZn2
_chemical_formula_sum   'K1 Ca1 Zn2'
_cell_volume   114.86
_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  0.0  0.0  0.0  1.0
  Ca  Ca0  1  0.79  0.79  0.0  1.0
  Zn  Zn2  1  0.0  0.79  0.84  1.0
  Zn  Zn3  1  0.79  0.0  0.84  1.0

data_KCaZn2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.9
_cell_length_b   7.9
_cell_length_c   3.68
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   KCaZn2
_chemical_formula_sum   'K2 Ca2 Zn4'
_cell_volume   229.72
_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  0.0  1.0
  Ca  Ca1  2  0.29  0.5  0.0  1.0
  Zn  Zn2  4  0.4  0.4  0.84  1.0

K Ca Zn Zn
K Ca Zn Zn 0 3 - o - 0 2 o - - 1 2 + o - 1 3 o + - 
KCaZn2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two KCaZn2 clusters. K(1) is bonded in a 2-coordinate geometry to two equivalent Zn(1) atoms. Both K(1)-Zn(1) bond lengths are 1.30 Å. Ca(1) is bonded in a 2-coordinate geometry to two equivalent Zn(1) atoms. Both Ca(1)-Zn(1) bond lengths are 1.30 Å. Zn(1) is bonded in a distorted L-shaped geometry to one K(1) and one Ca(1) atom.