data_SrCu2Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.93
_cell_length_b   4.93
_cell_length_c   4.93
_cell_angle_alpha   121.13
_cell_angle_beta   118.67
_cell_angle_gamma   90.19
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrCu2Sb
_chemical_formula_sum   'Sr1 Cu2 Sb1'
_cell_volume   84.56
_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
  Sr  Sr3  1  0.0  0.0  0.0  1.0
  Cu  Cu0  1  0.42  0.0  0.81  1.0
  Cu  Cu1  1  0.0  0.51  0.66  1.0
  Sb  Sb2  1  0.0  0.0  0.48  1.0

data_SrCu2Sb
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.84
_cell_length_b   4.93
_cell_length_c   4.93
_cell_angle_alpha   61.33
_cell_angle_beta   60.56
_cell_angle_gamma   60.56
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrCu2Sb
_chemical_formula_sum   'Sr1 Cu2 Sb1'
_cell_volume   84.56
_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
  Sr  Sr0  1  0.0  0.0  0.0  1.0
  Cu  Cu1  1  0.39  0.42  0.19  1.0
  Cu  Cu2  1  0.66  0.0  0.85  1.0
  Sb  Sb3  1  0.48  0.0  0.52  1.0

Sr Cu Cu Sb
Sr Cu Cu Sb 0 1 - o - 0 1 o o - 0 2 o - - 0 3 o o - 0 3 o o o 1 3 o o o 2 3 o o o 
SrCu2Sb crystallizes in the triclinic P1 space group. Sr(1) is bonded in a 6-coordinate geometry to two equivalent Cu(1), two equivalent Cu(2), and two equivalent Sb(1) atoms. There is one shorter (2.55 Å) and one longer (2.64 Å) Sr(1)-Cu(1) bond length. There is one shorter (2.10 Å) and one longer (2.92 Å) Sr(1)-Cu(2) bond length. There is one shorter (2.35 Å) and one longer (2.58 Å) Sr(1)-Sb(1) bond length. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one Sb(1) atom. The Cu(1)-Sb(1) bond length is 1.94 Å. In the second Cu site, Cu(2) is bonded in a 2-coordinate geometry to two equivalent Sr(1) and one Sb(1) atom. The Cu(2)-Sb(1) bond length is 2.19 Å. Sb(1) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Cu(1), and one Cu(2) atom.