data_LaNb2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.44
_cell_length_b   3.44
_cell_length_c   7.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaNb2Pt
_chemical_formula_sum   'La1 Nb2 Pt1'
_cell_volume   85.2
_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
  La  La0  1  0.0  0.0  0.3  1.0
  Nb  Nb1  1  0.72  0.72  0.38  1.0
  Nb  Nb2  1  0.0  0.0  0.77  1.0
  Pt  Pt3  1  0.72  0.72  0.33  1.0

data_LaNb2Pt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.87
_cell_length_b   4.87
_cell_length_c   7.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LaNb2Pt
_chemical_formula_sum   'La2 Nb4 Pt2'
_cell_volume   170.39
_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
  La  La0  2  0.0  0.0  0.3  1.0
  Nb  Nb1  2  0.0  0.0  0.77  1.0
  Nb  Nb2  2  0.22  0.5  0.38  1.0
  Pt  Pt3  2  0.22  0.5  0.33  1.0

La Nb Nb Pt
LaNb2Pt crystallizes in the monoclinic Cm space group. La(1) is bonded in a distorted single-bond geometry to two equivalent Nb(2) and one Pt(1) atom. There is one shorter (3.40 Å) and one longer (3.78 Å) La(1)-Nb(2) bond length. The La(1)-Pt(1) bond length is 1.37 Å. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a single-bond geometry to one Nb(2) and one Pt(1) atom. The Nb(1)-Nb(2) bond length is 3.15 Å. The Nb(1)-Pt(1) bond length is 0.38 Å. In the second Nb site, Nb(2) is bonded to two equivalent La(1), one Nb(1), and four equivalent Nb(2) atoms to form a mixture of distorted corner and edge-sharing NbLa2Nb5 pentagonal bipyramids. All Nb(2)-Nb(2) bond lengths are 3.44 Å. Pt(1) is bonded in a single-bond geometry to one La(1) and one Nb(1) atom.