The structure described by Ac3Tm is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to eight equivalent Ac(1) and four equivalent Tm(1) atoms to form AcAc8Tm4 cuboctahedra that share corners with four equivalent Tm(1)Ac12 cuboctahedra, corners with fourteen equivalent Ac(1)Ac8Tm4 cuboctahedra, edges with six equivalent Tm(1)Ac12 cuboctahedra, edges with twelve equivalent Ac(1)Ac8Tm4 cuboctahedra, faces with four equivalent Tm(1)Ac12 cuboctahedra, and faces with sixteen equivalent Ac(1)Ac8Tm4 cuboctahedra. Tm(1) is bonded to twelve equivalent Ac(1) atoms to form TmAc12 cuboctahedra that share corners with six equivalent Tm(1)Ac12 cuboctahedra, corners with twelve equivalent Ac(1)Ac8Tm4 cuboctahedra, edges with eighteen equivalent Ac(1)Ac8Tm4 cuboctahedra, faces with eight equivalent Tm(1)Ac12 cuboctahedra, and faces with twelve equivalent Ac(1)Ac8Tm4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ac3Tm
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.802
_cell_length_b   7.802
_cell_length_c   6.309
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   332.565
_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
  Ac  Ac0  1  0.170  0.340  0.250  1.0
  Ac  Ac1  1  0.660  0.830  0.250  1.0
  Ac  Ac2  1  0.170  0.830  0.250  1.0
  Ac  Ac3  1  0.830  0.660  0.750  1.0
  Ac  Ac4  1  0.340  0.170  0.750  1.0
  Ac  Ac5  1  0.830  0.170  0.750  1.0
  Tm  Tm6  1  0.333  0.667  0.750  1.0
  Tm  Tm7  1  0.667  0.333  0.250  1.0
[/CIF]
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The structure described by Ac3Tm is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to eight equivalent Ac(1) and four equivalent Tm(1) atoms to form AcAc8Tm4 cuboctahedra that share corners with four equivalent Tm(1)Ac12 cuboctahedra, corners with fourteen equivalent Ac(1)Ac8Tm4 cuboctahedra, edges with six equivalent Tm(1)Ac12 cuboctahedra, edges with twelve equivalent Ac(1)Ac8Tm4 cuboctahedra, faces with four equivalent Tm(1)Ac12 cuboctahedra, and faces with sixteen equivalent Ac(1)Ac8Tm4 cuboctahedra. Tm(1) is bonded to twelve equivalent Ac(1) atoms to form TmAc12 cuboctahedra that share corners with six equivalent Tm(1)Ac12 cuboctahedra, corners with twelve equivalent Ac(1)Ac8Tm4 cuboctahedra, edges with eighteen equivalent Ac(1)Ac8Tm4 cuboctahedra, faces with eight equivalent Tm(1)Ac12 cuboctahedra, and faces with twelve equivalent Ac(1)Ac8Tm4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ac3Tm
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.802
_cell_length_b   7.802
_cell_length_c   6.309
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   332.565
_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
  Ac  Ac0  1  0.170  0.340  0.250  1.0
  Ac  Ac1  1  0.660  0.830  0.250  1.0
  Ac  Ac2  1  0.170  0.830  0.250  1.0
  Ac  Ac3  1  0.830  0.660  0.750  1.0
  Ac  Ac4  1  0.340  0.170  0.750  1.0
  Ac  Ac5  1  0.830  0.170  0.750  1.0
  Tm  Tm6  1  0.333  0.667  0.750  1.0
  Tm  Tm7  1  0.667  0.333  0.250  1.0
[/CIF]
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