data_NbCr2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.93
_cell_length_b   2.93
_cell_length_c   6.53
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NbCr2Ge
_chemical_formula_sum   'Nb1 Cr2 Ge1'
_cell_volume   56.2
_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
  Nb  Nb3  1  0.47  0.47  0.93  1.0
  Cr  Cr0  1  0.0  0.0  0.33  1.0
  Cr  Cr1  1  0.47  0.47  0.51  1.0
  Ge  Ge2  1  0.0  0.0  0.02  1.0

data_NbCr2Ge
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.15
_cell_length_b   4.15
_cell_length_c   6.53
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NbCr2Ge
_chemical_formula_sum   'Nb2 Cr4 Ge2'
_cell_volume   112.39
_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
  Nb  Nb0  2  0.47  0.0  0.93  1.0
  Cr  Cr1  2  0.0  0.0  0.33  1.0
  Cr  Cr2  2  0.47  0.0  0.51  1.0
  Ge  Ge3  2  0.0  0.0  0.02  1.0

Nb Cr Cr Ge
NbCr2Ge crystallizes in the monoclinic Cm space group. Nb(1) is bonded in a 5-coordinate geometry to one Cr(2) and four equivalent Ge(1) atoms. The Nb(1)-Cr(2) bond length is 2.75 Å. There are a spread of Nb(1)-Ge(1) bond distances ranging from 2.02-2.29 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a distorted single-bond geometry to four equivalent Cr(2) and one Ge(1) atom. There are a spread of Cr(1)-Cr(2) bond distances ranging from 2.27-2.51 Å. The Cr(1)-Ge(1) bond length is 2.02 Å. In the second Cr site, Cr(2) is bonded in a 5-coordinate geometry to one Nb(1) and four equivalent Cr(1) atoms. Ge(1) is bonded to four equivalent Nb(1) and one Cr(1) atom to form a mixture of distorted edge and corner-sharing GeNb4Cr trigonal bipyramids.