data_SrCu2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.2
_cell_length_b   3.3
_cell_length_c   6.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrCu2Ni
_chemical_formula_sum   'Sr1 Cu2 Ni1'
_cell_volume   70.25
_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  0.6  0.65  0.93  1.0
  Cu  Cu0  1  0.0  0.0  0.48  1.0
  Cu  Cu1  1  0.6  0.65  0.71  1.0
  Ni  Ni2  1  0.0  0.0  0.85  1.0

data_SrCu2Ni
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.2
_cell_length_b   3.3
_cell_length_c   6.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrCu2Ni
_chemical_formula_sum   'Sr1 Cu2 Ni1'
_cell_volume   70.25
_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  0.6  0.65  0.93  1.0
  Cu  Cu1  1  0.0  0.0  0.48  1.0
  Cu  Cu2  1  0.6  0.65  0.71  1.0
  Ni  Ni3  1  0.0  0.0  0.85  1.0

Sr Cu Cu Ni
SrNiCu2 crystallizes in the triclinic P1 space group. Sr(1) is bonded in a 1-coordinate geometry to one Ni(1), one Cu(1), and one Cu(2) atom. The Sr(1)-Ni(1) bond length is 1.80 Å. The Sr(1)-Cu(1) bond length is 4.03 Å. The Sr(1)-Cu(2) bond length is 1.47 Å. Ni(1) is bonded in a 1-coordinate geometry to one Sr(1) and one Cu(1) atom. The Ni(1)-Cu(1) bond length is 2.48 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 10-coordinate geometry to one Sr(1), one Ni(1), four equivalent Cu(1), and four equivalent Cu(2) atoms. There are two shorter (3.20 Å) and two longer (3.30 Å) Cu(1)-Cu(1) bond lengths. There are a spread of Cu(1)-Cu(2) bond distances ranging from 2.31-3.27 Å. In the second Cu site, Cu(2) is bonded in a single-bond geometry to one Sr(1) and four equivalent Cu(1) atoms.