data_NaMgNb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.73
_cell_length_b   5.73
_cell_length_c   5.73
_cell_angle_alpha   152.82
_cell_angle_beta   129.83
_cell_angle_gamma   57.99
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMgNb
_chemical_formula_sum   'Na1 Mg1 Nb1'
_cell_volume   65.44
_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  0.64  1.0
  Mg  Mg0  1  0.0  0.0  0.93  1.0
  Nb  Nb2  1  0.0  0.0  0.47  1.0

data_NaMgNb
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.69
_cell_length_b   4.86
_cell_length_c   5.73
_cell_angle_alpha   115.08
_cell_angle_beta   103.59
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMgNb
_chemical_formula_sum   'Na1 Mg1 Nb1'
_cell_volume   65.44
_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  0.64  0.64  1.0
  Mg  Mg1  1  0.0  0.93  0.93  1.0
  Nb  Nb2  1  0.0  0.47  0.47  1.0

Na Mg Nb
Na Mg Nb 0 2 o o o 0 1 o o o 
NaMgNb crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one NaMgNb cluster. Na(1) is bonded in a distorted linear geometry to one Mg(1) and one Nb(1) atom. The Na(1)-Mg(1) bond length is 1.69 Å. The Na(1)-Nb(1) bond length is 0.98 Å. Mg(1) is bonded in a distorted single-bond geometry to one Na(1) atom. Nb(1) is bonded in a single-bond geometry to one Na(1) atom.