data_Sr2LaCu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.69
_cell_length_b   5.69
_cell_length_c   4.36
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.81
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2LaCu
_chemical_formula_sum   'Sr2 La1 Cu1'
_cell_volume   141.07
_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  Sr2  1  1.0  0.97  0.18  1.0
  Sr  Sr3  1  1.0  0.03  0.18  1.0
  La  La1  1  0.99  0.0  0.0  1.0
  Cu  Cu0  1  0.0  0.0  0.0  1.0

data_Sr2LaCu
_symmetry_space_group_name_H-M   Pmm2
_cell_length_a   5.69
_cell_length_b   5.69
_cell_length_c   4.36
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   25
_chemical_formula_structural   Sr2LaCu
_chemical_formula_sum   'Sr2 La1 Cu1'
_cell_volume   141.08
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, z'
  3  '-x, y, z'
  4  '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  2  0.5  0.03  0.18  1.0
  La  La1  1  0.5  0.0  0.0  1.0
  Cu  Cu2  1  0.5  0.0  0.0  1.0

Sr Sr La Cu
Sr Sr La Cu 0 1 o + o 2 3 + o o 
(Sr)2LaCu crystallizes in the monoclinic Pm space group. The structure is zero-dimensional and consists of one copper--lanthanum (1/1) molecule and one strontium molecule.