data_Sr2EuDy
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.25
_cell_length_b   6.25
_cell_length_c   6.25
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2EuDy
_chemical_formula_sum   'Sr2 Eu1 Dy1'
_cell_volume   172.75
_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  0.21  0.21  0.21  1.0
  Sr  Sr3  1  0.63  0.63  0.63  1.0
  Eu  Eu1  1  0.0  0.0  0.0  1.0
  Dy  Dy0  1  0.42  0.42  0.42  1.0

data_Sr2EuDy
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.25
_cell_length_b   6.25
_cell_length_c   15.31
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Sr2EuDy
_chemical_formula_sum   'Sr6 Eu3 Dy3'
_cell_volume   518.26
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.37  1.0
  Sr  Sr1  3  0.0  0.0  0.79  1.0
  Eu  Eu2  3  0.0  0.0  0.0  1.0
  Dy  Dy3  3  0.0  0.0  0.58  1.0

Sr Sr Eu Dy
Sr2DyEu is Heusler structured and crystallizes in the trigonal R3m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a distorted linear geometry to three equivalent Sr(2), one Dy(1), and four equivalent Eu(1) atoms. All Sr(1)-Sr(2) bond lengths are 3.85 Å. The Sr(1)-Dy(1) bond length is 3.22 Å. There is one shorter (3.22 Å) and three longer (4.07 Å) Sr(1)-Eu(1) bond lengths. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to three equivalent Sr(1), four equivalent Dy(1), and three equivalent Eu(1) atoms. There is one shorter (3.22 Å) and three longer (4.07 Å) Sr(2)-Dy(1) bond lengths. All Sr(2)-Eu(1) bond lengths are 3.65 Å. Dy(1) is bonded in a distorted linear geometry to one Sr(1), four equivalent Sr(2), and three equivalent Eu(1) atoms. All Dy(1)-Eu(1) bond lengths are 3.85 Å. Eu(1) is bonded in a 10-coordinate geometry to three equivalent Sr(2), four equivalent Sr(1), and three equivalent Dy(1) atoms.