data_NaNi2Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.96
_cell_length_b   4.96
_cell_length_c   2.66
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   114.56
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaNi2Ag
_chemical_formula_sum   'Na1 Ni2 Ag1'
_cell_volume   59.49
_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  0.0  1.0
  Ni  Ni2  1  0.34  0.08  0.33  1.0
  Ni  Ni3  1  0.34  0.92  0.33  1.0
  Ag  Ag0  1  0.68  0.0  0.0  1.0

data_NaNi2Ag
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.66
_cell_length_b   4.96
_cell_length_c   4.96
_cell_angle_alpha   114.56
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaNi2Ag
_chemical_formula_sum   'Na1 Ni2 Ag1'
_cell_volume   59.49
_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
  Ni  Ni1  1  0.33  0.34  0.08  1.0
  Ni  Ni2  1  0.33  0.34  0.92  1.0
  Ag  Ag3  1  0.0  0.68  0.0  1.0

Na Ni Ni Ag
NaNi2Ag crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one NaNi2Ag cluster. Na(1) is bonded in a distorted bent 150 degrees geometry to one Ni(1) and one Ag(1) atom. The Na(1)-Ni(1) bond length is 1.79 Å. The Na(1)-Ag(1) bond length is 1.59 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 2-coordinate geometry to one Na(1) and one Ni(2) atom. The Ni(1)-Ni(2) bond length is 0.84 Å. In the second Ni site, Ni(2) is bonded in a distorted single-bond geometry to one Ni(1) atom. Ag(1) is bonded in a distorted single-bond geometry to one Na(1) atom.