data_NaGePt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.35
_cell_length_b   3.35
_cell_length_c   6.45
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaGePt2
_chemical_formula_sum   'Na1 Ge1 Pt2'
_cell_volume   72.53
_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
  Na  Na1  1  0.0  0.0  0.87  1.0
  Ge  Ge0  1  0.68  0.68  0.84  1.0
  Pt  Pt2  1  0.68  0.68  0.21  1.0
  Pt  Pt3  1  0.0  0.0  0.76  1.0

data_NaGePt2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.74
_cell_length_b   4.74
_cell_length_c   6.45
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaGePt2
_chemical_formula_sum   'Na2 Ge2 Pt4'
_cell_volume   145.06
_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
  Na  Na0  2  0.0  0.0  0.87  1.0
  Ge  Ge1  2  0.18  0.5  0.84  1.0
  Pt  Pt2  2  0.0  0.0  0.76  1.0
  Pt  Pt3  2  0.18  0.5  0.21  1.0

Na Ge Pt Pt
Na Ge Pt Pt 0 3 o o o 0 1 - - o 0 2 - - + 1 3 + + o 1 2 o o + 
NaPt2Ge crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two NaPt2Ge clusters. Na(1) is bonded in a single-bond geometry to one Pt(1), one Pt(2), and one Ge(1) atom. The Na(1)-Pt(1) bond length is 2.66 Å. The Na(1)-Pt(2) bond length is 0.71 Å. The Na(1)-Ge(1) bond length is 1.55 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 2-coordinate geometry to one Na(1) and one Ge(1) atom. The Pt(1)-Ge(1) bond length is 2.38 Å. In the second Pt site, Pt(2) is bonded in a single-bond geometry to one Na(1) atom. Ge(1) is bonded in a distorted single-bond geometry to one Na(1) and one Pt(1) atom.