The material described by Eu(Sr1) crystallizes in the hexagonal P-6m2 space group. Sr(1) is bonded to six equivalent Sr(1) and six equivalent Eu(1) atoms to form SrSr6Eu6 cuboctahedra that share corners with eighteen equivalent Sr(1)Sr6Eu6 cuboctahedra, edges with six equivalent Sr(1)Sr6Eu6 cuboctahedra, edges with twelve equivalent Eu(1)Sr6Eu6 cuboctahedra, faces with eight equivalent Sr(1)Sr6Eu6 cuboctahedra, and faces with twelve equivalent Eu(1)Sr6Eu6 cuboctahedra. Eu(1) is bonded to six equivalent Sr(1) and six equivalent Eu(1) atoms to form EuSr6Eu6 cuboctahedra that share corners with eighteen equivalent Eu(1)Sr6Eu6 cuboctahedra, edges with six equivalent Eu(1)Sr6Eu6 cuboctahedra, edges with twelve equivalent Sr(1)Sr6Eu6 cuboctahedra, faces with eight equivalent Eu(1)Sr6Eu6 cuboctahedra, and faces with twelve equivalent Sr(1)Sr6Eu6 cuboctahedra. is represented by the CIF file [CIF]
data_SrEu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.143
_cell_length_b   4.143
_cell_length_c   6.862
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   101.980
_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  0.333  0.667  0.000  1.0
  Eu  Eu1  1  0.667  0.333  0.500  1.0
[/CIF]
.
The material described by Eu(Sr1) crystallizes in the hexagonal P-6m2 space group. Sr(1) is bonded to six equivalent Sr(1) and six equivalent Eu(1) atoms to form SrSr6Eu6 cuboctahedra that share corners with eighteen equivalent Sr(1)Sr6Eu6 cuboctahedra, edges with six equivalent Sr(1)Sr6Eu6 cuboctahedra, edges with twelve equivalent Eu(1)Sr6Eu6 cuboctahedra, faces with eight equivalent Sr(1)Sr6Eu6 cuboctahedra, and faces with twelve equivalent Eu(1)Sr6Eu6 cuboctahedra. Eu(1) is bonded to six equivalent Sr(1) and six equivalent Eu(1) atoms to form EuSr6Eu6 cuboctahedra that share corners with eighteen equivalent Eu(1)Sr6Eu6 cuboctahedra, edges with six equivalent Eu(1)Sr6Eu6 cuboctahedra, edges with twelve equivalent Sr(1)Sr6Eu6 cuboctahedra, faces with eight equivalent Eu(1)Sr6Eu6 cuboctahedra, and faces with twelve equivalent Sr(1)Sr6Eu6 cuboctahedra. is represented by the CIF file [CIF]
data_SrEu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.143
_cell_length_b   4.143
_cell_length_c   6.862
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   101.980
_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  0.333  0.667  0.000  1.0
  Eu  Eu1  1  0.667  0.333  0.500  1.0
[/CIF]
.