data_NaPr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.54
_cell_length_b   3.54
_cell_length_c   6.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaPr
_chemical_formula_sum   'Na1 Pr1'
_cell_volume   68.28
_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
  Pr  Pr1  1  0.77  0.02  0.14  1.0

data_NaPr
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.54
_cell_length_b   3.54
_cell_length_c   6.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaPr
_chemical_formula_sum   'Na1 Pr1'
_cell_volume   68.28
_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
  Pr  Pr1  1  0.77  0.02  0.14  1.0

Na Pr
Na Pr 0 1 - o o 
NaPr crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one NaPr cluster. Na(1) is bonded in a single-bond geometry to one Pr(1) atom. The Na(1)-Pr(1) bond length is 1.25 Å. Pr(1) is bonded in a single-bond geometry to one Na(1) atom.