data_NaYNb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.42
_cell_length_b   11.42
_cell_length_c   11.42
_cell_angle_alpha   15.35
_cell_angle_beta   15.35
_cell_angle_gamma   15.35
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaYNb2
_chemical_formula_sum   'Na1 Y1 Nb2'
_cell_volume   90.89
_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
  Y  Y3  1  0.0  0.0  0.92  1.0
  Nb  Nb1  1  0.0  0.0  0.49  1.0
  Nb  Nb2  1  0.0  0.0  0.35  1.0

data_NaYNb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.28
_cell_length_b   3.05
_cell_length_c   11.42
_cell_angle_alpha   90.0
_cell_angle_beta   98.87
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaYNb2
_chemical_formula_sum   'Na2 Y2 Nb4'
_cell_volume   181.78
_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
  Na  Na0  2  0.0  0.0  0.0  1.0
  Y  Y1  2  0.0  0.0  0.08  1.0
  Nb  Nb2  2  0.0  0.0  0.51  1.0
  Nb  Nb3  2  0.0  0.0  0.65  1.0

Na Y Nb Nb
NaY(Nb)2 is Cubic alpha N2-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two sodium;yttrium molecules and two Nb clusters. In each Nb cluster, there are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a single-bond geometry to one Nb(2) atom. The Nb(1)-Nb(2) bond length is 1.61 Å. In the second Nb site, Nb(2) is bonded in a single-bond geometry to one Nb(1) atom.