The structure described by RbSr3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to four equivalent Sr(2) and eight equivalent Sr(1) atoms to form RbSr12 cuboctahedra that share corners with four equivalent Rb(1)Sr12 cuboctahedra, corners with eight equivalent Sr(2)Rb4Sr8 cuboctahedra, edges with eight equivalent Rb(1)Sr12 cuboctahedra, edges with sixteen equivalent Sr(1)Rb4Sr8 cuboctahedra, faces with four equivalent Rb(1)Sr12 cuboctahedra, faces with six equivalent Sr(2)Rb4Sr8 cuboctahedra, and faces with eight equivalent Sr(1)Rb4Sr8 cuboctahedra. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Rb(1), four equivalent Sr(1), and four equivalent Sr(2) atoms to form SrRb4Sr8 cuboctahedra that share corners with twelve equivalent Sr(1)Rb4Sr8 cuboctahedra, edges with eight equivalent Rb(1)Sr12 cuboctahedra, edges with eight equivalent Sr(1)Rb4Sr8 cuboctahedra, edges with eight equivalent Sr(2)Rb4Sr8 cuboctahedra, faces with four equivalent Rb(1)Sr12 cuboctahedra, faces with four equivalent Sr(2)Rb4Sr8 cuboctahedra, and faces with ten equivalent Sr(1)Rb4Sr8 cuboctahedra. In the second Sr site, Sr(2) is bonded to four equivalent Rb(1) and eight equivalent Sr(1) atoms to form SrRb4Sr8 cuboctahedra that share corners with four equivalent Sr(2)Rb4Sr8 cuboctahedra, corners with eight equivalent Rb(1)Sr12 cuboctahedra, edges with eight equivalent Sr(2)Rb4Sr8 cuboctahedra, edges with sixteen equivalent Sr(1)Rb4Sr8 cuboctahedra, faces with four equivalent Sr(2)Rb4Sr8 cuboctahedra, faces with six equivalent Rb(1)Sr12 cuboctahedra, and faces with eight equivalent Sr(1)Rb4Sr8 cuboctahedra. is represented by the CIF file [CIF]
data_RbSr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.730
_cell_length_b   7.730
_cell_length_c   7.730
_cell_angle_alpha   132.867
_cell_angle_beta   132.867
_cell_angle_gamma   68.862
_symmetry_Int_Tables_number   1
_cell_volume   243.617
_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
  Rb  Rb0  1  0.000  0.000  0.000  1.0
  Sr  Sr1  1  0.750  0.250  0.500  1.0
  Sr  Sr2  1  0.250  0.750  0.500  1.0
  Sr  Sr3  1  0.500  0.500  0.000  1.0
[/CIF]
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The structure described by RbSr3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to four equivalent Sr(2) and eight equivalent Sr(1) atoms to form RbSr12 cuboctahedra that share corners with four equivalent Rb(1)Sr12 cuboctahedra, corners with eight equivalent Sr(2)Rb4Sr8 cuboctahedra, edges with eight equivalent Rb(1)Sr12 cuboctahedra, edges with sixteen equivalent Sr(1)Rb4Sr8 cuboctahedra, faces with four equivalent Rb(1)Sr12 cuboctahedra, faces with six equivalent Sr(2)Rb4Sr8 cuboctahedra, and faces with eight equivalent Sr(1)Rb4Sr8 cuboctahedra. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Rb(1), four equivalent Sr(1), and four equivalent Sr(2) atoms to form SrRb4Sr8 cuboctahedra that share corners with twelve equivalent Sr(1)Rb4Sr8 cuboctahedra, edges with eight equivalent Rb(1)Sr12 cuboctahedra, edges with eight equivalent Sr(1)Rb4Sr8 cuboctahedra, edges with eight equivalent Sr(2)Rb4Sr8 cuboctahedra, faces with four equivalent Rb(1)Sr12 cuboctahedra, faces with four equivalent Sr(2)Rb4Sr8 cuboctahedra, and faces with ten equivalent Sr(1)Rb4Sr8 cuboctahedra. In the second Sr site, Sr(2) is bonded to four equivalent Rb(1) and eight equivalent Sr(1) atoms to form SrRb4Sr8 cuboctahedra that share corners with four equivalent Sr(2)Rb4Sr8 cuboctahedra, corners with eight equivalent Rb(1)Sr12 cuboctahedra, edges with eight equivalent Sr(2)Rb4Sr8 cuboctahedra, edges with sixteen equivalent Sr(1)Rb4Sr8 cuboctahedra, faces with four equivalent Sr(2)Rb4Sr8 cuboctahedra, faces with six equivalent Rb(1)Sr12 cuboctahedra, and faces with eight equivalent Sr(1)Rb4Sr8 cuboctahedra. is represented by the CIF file [CIF]
data_RbSr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.730
_cell_length_b   7.730
_cell_length_c   7.730
_cell_angle_alpha   132.867
_cell_angle_beta   132.867
_cell_angle_gamma   68.862
_symmetry_Int_Tables_number   1
_cell_volume   243.617
_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
  Rb  Rb0  1  0.000  0.000  0.000  1.0
  Sr  Sr1  1  0.750  0.250  0.500  1.0
  Sr  Sr2  1  0.250  0.750  0.500  1.0
  Sr  Sr3  1  0.500  0.500  0.000  1.0
[/CIF]
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