data_Sr2YSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.9
_cell_length_b   5.12
_cell_length_c   7.17
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2YSn
_chemical_formula_sum   'Sr2 Y1 Sn1'
_cell_volume   143.38
_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  0.95  0.56  0.27  1.0
  Sr  Sr2  1  0.95  0.56  0.91  1.0
  Y  Y3  1  0.0  0.0  0.0  1.0
  Sn  Sn0  1  0.0  0.0  0.59  1.0

data_Sr2YSn
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.9
_cell_length_b   5.12
_cell_length_c   7.17
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2YSn
_chemical_formula_sum   'Sr2 Y1 Sn1'
_cell_volume   143.38
_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  0.95  0.56  0.27  1.0
  Sr  Sr1  1  0.95  0.56  0.91  1.0
  Y  Y2  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.0  0.59  1.0

Sr Sr Y Sn
Sr Sr Y Sn 0 2 + + o 0 1 o o - 0 3 + + o 0 3 + o o 1 2 + + + 1 2 + o + 1 3 + + o 1 3 + o o 2 3 o o - 
Sr2YSn crystallizes in the triclinic P1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one Sr(2), two equivalent Sr(1), two equivalent Y(1), and two equivalent Sn(1) atoms. The Sr(1)-Sr(2) bond length is 2.58 Å. Both Sr(1)-Sr(1) bond lengths are 3.90 Å. There is one shorter (2.95 Å) and one longer (3.45 Å) Sr(1)-Y(1) bond length. There is one shorter (3.22 Å) and one longer (3.68 Å) Sr(1)-Sn(1) bond length. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Y(1), and two equivalent Sn(1) atoms. There is one shorter (2.36 Å) and one longer (2.96 Å) Sr(2)-Y(1) bond length. There is one shorter (3.22 Å) and one longer (3.68 Å) Sr(2)-Sn(1) bond length. Y(1) is bonded in a 5-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and one Sn(1) atom. The Y(1)-Sn(1) bond length is 2.97 Å. Sn(1) is bonded to two equivalent Sr(1), two equivalent Sr(2), and one Y(1) atom to form distorted edge-sharing SnSr4Y trigonal bipyramids.