data_KCo2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.69
_cell_length_b   8.69
_cell_length_c   8.69
_cell_angle_alpha   20.58
_cell_angle_beta   20.58
_cell_angle_gamma   20.58
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KCo2Ge
_chemical_formula_sum   'K1 Co2 Ge1'
_cell_volume   71.08
_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  K3  1  0.0  0.0  0.0  1.0
  Co  Co0  1  0.0  0.0  0.78  1.0
  Co  Co1  1  0.0  0.0  0.75  1.0
  Ge  Ge2  1  0.0  0.0  0.76  1.0

data_KCo2Ge
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.38
_cell_length_b   3.11
_cell_length_c   8.69
_cell_angle_alpha   90.0
_cell_angle_beta   101.9
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   KCo2Ge
_chemical_formula_sum   'K2 Co4 Ge2'
_cell_volume   142.17
_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
  Co  Co1  2  0.0  0.0  0.22  1.0
  Co  Co2  2  0.0  0.0  0.25  1.0
  Ge  Ge3  2  0.0  0.0  0.24  1.0

K Co Co Ge
KCo2Ge is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two KCo2Ge clusters. K(1) is bonded in a single-bond geometry to one Co(1) atom. The K(1)-Co(1) bond length is 1.94 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted linear geometry to one K(1) and one Ge(1) atom. The Co(1)-Ge(1) bond length is 0.13 Å. In the second Co site, Co(2) is bonded in a single-bond geometry to one Ge(1) atom. The Co(2)-Ge(1) bond length is 0.13 Å. Ge(1) is bonded in a linear geometry to one Co(1) and one Co(2) atom.