data_NaTi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.08
_cell_length_b   2.72
_cell_length_c   6.37
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaTi
_chemical_formula_sum   'Na2 Ti2'
_cell_volume   87.96
_cell_formula_units_Z   2
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  0.81  0.0  0.96  1.0
  Na  Na1  1  0.27  0.0  0.41  1.0
  Ti  Ti2  1  0.27  0.36  0.85  1.0
  Ti  Ti3  1  0.81  0.36  0.52  1.0

data_NaTi
_symmetry_space_group_name_H-M   P2
_cell_length_a   5.08
_cell_length_b   2.72
_cell_length_c   6.37
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   3
_chemical_formula_structural   NaTi
_chemical_formula_sum   'Na2 Ti2'
_cell_volume   87.96
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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  2  0.23  0.0  0.23  1.0
  Ti  Ti1  2  0.23  0.36  0.66  1.0

Na Na Ti Ti
NaTi crystallizes in the monoclinic P2 space group. Na(1) is bonded in a 9-coordinate geometry to two equivalent Na(1) and seven equivalent Ti(1) atoms. Both Na(1)-Na(1) bond lengths are 2.72 Å. There are a spread of Na(1)-Ti(1) bond distances ranging from 2.62-3.73 Å. Ti(1) is bonded in a 1-coordinate geometry to seven equivalent Na(1) atoms.