data_Sr2YCd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.57
_cell_length_b   6.57
_cell_length_c   6.57
_cell_angle_alpha   133.74
_cell_angle_beta   133.74
_cell_angle_gamma   67.49
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2YCd
_chemical_formula_sum   'Sr2 Y1 Cd1'
_cell_volume   145.76
_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  Sr1  1  0.0  0.58  0.73  1.0
  Sr  Sr2  1  0.58  0.0  0.73  1.0
  Y  Y3  1  0.0  0.0  0.0  1.0
  Cd  Cd0  1  0.0  0.0  0.47  1.0

data_Sr2YCd
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.3
_cell_length_b   7.3
_cell_length_c   6.57
_cell_angle_alpha   90.0
_cell_angle_beta   123.74
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sr2YCd
_chemical_formula_sum   'Sr4 Y2 Cd2'
_cell_volume   291.53
_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
  Sr  Sr0  4  0.06  0.21  0.85  1.0
  Y  Y1  2  0.0  0.0  0.0  1.0
  Cd  Cd2  2  0.03  0.5  0.53  1.0

Sr Sr Y Cd
Sr Sr Y Cd 0 2 o + + 0 3 o o o 0 3 o + + 1 2 + o + 1 3 + o + 1 3 o o o 2 3 o o o 2 3 o o - 
Sr2YCd crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 2-coordinate geometry to one Y(1) and two equivalent Cd(1) atoms. The Sr(1)-Y(1) bond length is 1.99 Å. There is one shorter (2.90 Å) and one longer (3.53 Å) Sr(1)-Cd(1) bond length. Y(1) is bonded in a distorted water-like geometry to two equivalent Sr(1) and two equivalent Cd(1) atoms. There is one shorter (3.06 Å) and one longer (3.51 Å) Y(1)-Cd(1) bond length. Cd(1) is bonded in a 6-coordinate geometry to four equivalent Sr(1) and two equivalent Y(1) atoms.