data_NaCrGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.86
_cell_length_b   2.86
_cell_length_c   8.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   95.57
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaCrGe2
_chemical_formula_sum   'Na1 Cr1 Ge2'
_cell_volume   67.72
_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  Na3  1  0.0  0.0  0.0  1.0
  Cr  Cr0  1  0.0  0.0  0.17  1.0
  Ge  Ge1  1  0.92  0.0  0.88  1.0
  Ge  Ge2  1  0.92  0.0  0.46  1.0

data_NaCrGe2
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.86
_cell_length_b   2.86
_cell_length_c   8.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   95.57
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaCrGe2
_chemical_formula_sum   'Na1 Cr1 Ge2'
_cell_volume   67.72
_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  Na0  1  0.0  0.0  0.0  1.0
  Cr  Cr1  1  0.0  0.0  0.17  1.0
  Ge  Ge2  1  0.92  0.0  0.46  1.0
  Ge  Ge3  1  0.92  0.0  0.88  1.0

Na Cr Ge Ge
Na Cr Ge Ge 0 2 - o - 0 1 o o o 1 3 - o o 3 3 o + o 3 3 + o o 
NaCrGe2 is alpha Niobium phosphide-derived structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one NaCrGe2 cluster. Na(1) is bonded in a distorted linear geometry to one Cr(1) and one Ge(1) atom. The Na(1)-Cr(1) bond length is 1.41 Å. The Na(1)-Ge(1) bond length is 1.05 Å. Cr(1) is bonded in a distorted single-bond geometry to one Na(1) and one Ge(2) atom. The Cr(1)-Ge(2) bond length is 2.44 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a single-bond geometry to one Na(1) atom. In the second Ge site, Ge(2) is bonded in a distorted single-bond geometry to one Cr(1) atom.