data_Sr2YAl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.92
_cell_length_b   5.92
_cell_length_c   5.92
_cell_angle_alpha   124.99
_cell_angle_beta   124.99
_cell_angle_gamma   81.55
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2YAl
_chemical_formula_sum   'Sr2 Y1 Al1'
_cell_volume   133.78
_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  0.73  0.0  0.24  1.0
  Sr  Sr2  1  0.0  0.0  0.48  1.0
  Y  Y3  1  0.0  0.73  0.24  1.0
  Al  Al0  1  0.0  0.0  0.0  1.0

data_Sr2YAl
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.46
_cell_length_b   5.46
_cell_length_c   5.92
_cell_angle_alpha   117.5
_cell_angle_beta   117.5
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2YAl
_chemical_formula_sum   'Sr2 Y1 Al1'
_cell_volume   133.78
_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  0.24  0.51  0.51  1.0
  Sr  Sr1  1  0.48  0.48  0.48  1.0
  Y  Y2  1  0.51  0.24  0.51  1.0
  Al  Al3  1  0.0  0.0  0.0  1.0

Sr Sr Y Al
Sr2YAl crystallizes in the triclinic P1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 4-coordinate geometry to one Sr(2), one Y(1), and two equivalent Al(1) atoms. The Sr(1)-Sr(2) bond length is 1.40 Å. The Sr(1)-Y(1) bond length is 2.07 Å. There is one shorter (2.67 Å) and one longer (3.70 Å) Sr(1)-Al(1) bond length. In the second Sr site, Sr(2) is bonded in a 1-coordinate geometry to one Sr(1), one Y(1), and two equivalent Al(1) atoms. The Sr(2)-Y(1) bond length is 1.40 Å. There is one shorter (2.84 Å) and one longer (3.07 Å) Sr(2)-Al(1) bond length. Y(1) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and two equivalent Al(1) atoms. There is one shorter (2.67 Å) and one longer (3.70 Å) Y(1)-Al(1) bond length. Al(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Y(1) atoms.