The material described by Rb3Ac is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Rb(1) is bonded to eight equivalent Rb(1) and four equivalent Ac(1) atoms to form RbRb8Ac4 cuboctahedra that share corners with four equivalent Ac(1)Rb12 cuboctahedra, corners with fourteen equivalent Rb(1)Rb8Ac4 cuboctahedra, edges with six equivalent Ac(1)Rb12 cuboctahedra, edges with twelve equivalent Rb(1)Rb8Ac4 cuboctahedra, faces with four equivalent Ac(1)Rb12 cuboctahedra, and faces with sixteen equivalent Rb(1)Rb8Ac4 cuboctahedra. Ac(1) is bonded to twelve equivalent Rb(1) atoms to form AcRb12 cuboctahedra that share corners with six equivalent Ac(1)Rb12 cuboctahedra, corners with twelve equivalent Rb(1)Rb8Ac4 cuboctahedra, edges with eighteen equivalent Rb(1)Rb8Ac4 cuboctahedra, faces with eight equivalent Ac(1)Rb12 cuboctahedra, and faces with twelve equivalent Rb(1)Rb8Ac4 cuboctahedra. is represented by the CIF card [CIF]
data_Rb3Ac
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.308
_cell_length_b   9.308
_cell_length_c   7.719
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   579.159
_cell_formula_units_Z   2
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  0.170  0.341  0.250  1.0
  Rb  Rb1  1  0.659  0.830  0.250  1.0
  Rb  Rb2  1  0.170  0.830  0.250  1.0
  Rb  Rb3  1  0.830  0.659  0.750  1.0
  Rb  Rb4  1  0.341  0.170  0.750  1.0
  Rb  Rb5  1  0.830  0.170  0.750  1.0
  Ac  Ac6  1  0.333  0.667  0.750  1.0
  Ac  Ac7  1  0.667  0.333  0.250  1.0
[/CIF]
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The material described by Rb3Ac is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Rb(1) is bonded to eight equivalent Rb(1) and four equivalent Ac(1) atoms to form RbRb8Ac4 cuboctahedra that share corners with four equivalent Ac(1)Rb12 cuboctahedra, corners with fourteen equivalent Rb(1)Rb8Ac4 cuboctahedra, edges with six equivalent Ac(1)Rb12 cuboctahedra, edges with twelve equivalent Rb(1)Rb8Ac4 cuboctahedra, faces with four equivalent Ac(1)Rb12 cuboctahedra, and faces with sixteen equivalent Rb(1)Rb8Ac4 cuboctahedra. Ac(1) is bonded to twelve equivalent Rb(1) atoms to form AcRb12 cuboctahedra that share corners with six equivalent Ac(1)Rb12 cuboctahedra, corners with twelve equivalent Rb(1)Rb8Ac4 cuboctahedra, edges with eighteen equivalent Rb(1)Rb8Ac4 cuboctahedra, faces with eight equivalent Ac(1)Rb12 cuboctahedra, and faces with twelve equivalent Rb(1)Rb8Ac4 cuboctahedra. is represented by the CIF card [CIF]
data_Rb3Ac
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.308
_cell_length_b   9.308
_cell_length_c   7.719
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   579.159
_cell_formula_units_Z   2
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  0.170  0.341  0.250  1.0
  Rb  Rb1  1  0.659  0.830  0.250  1.0
  Rb  Rb2  1  0.170  0.830  0.250  1.0
  Rb  Rb3  1  0.830  0.659  0.750  1.0
  Rb  Rb4  1  0.341  0.170  0.750  1.0
  Rb  Rb5  1  0.830  0.170  0.750  1.0
  Ac  Ac6  1  0.333  0.667  0.750  1.0
  Ac  Ac7  1  0.667  0.333  0.250  1.0
[/CIF]
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