The crystal structure described by AcSe3 crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to twelve equivalent Se(1) atoms to form a mixture of corner and face-sharing AcSe12 cuboctahedra. Se(1) is bonded in a 6-coordinate geometry to four equivalent Ac(1) and two equivalent Se(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_AcSe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.241
_cell_length_b   6.241
_cell_length_c   6.174
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   208.296
_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  0.333  0.667  0.750  1.0
  Ac  Ac1  1  0.667  0.333  0.250  1.0
  Se  Se2  1  0.174  0.348  0.250  1.0
  Se  Se3  1  0.652  0.826  0.250  1.0
  Se  Se4  1  0.174  0.826  0.250  1.0
  Se  Se5  1  0.826  0.652  0.750  1.0
  Se  Se6  1  0.348  0.174  0.750  1.0
  Se  Se7  1  0.826  0.174  0.750  1.0
[/CIF]
.
The crystal structure described by AcSe3 crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to twelve equivalent Se(1) atoms to form a mixture of corner and face-sharing AcSe12 cuboctahedra. Se(1) is bonded in a 6-coordinate geometry to four equivalent Ac(1) and two equivalent Se(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_AcSe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.241
_cell_length_b   6.241
_cell_length_c   6.174
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   208.296
_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  0.333  0.667  0.750  1.0
  Ac  Ac1  1  0.667  0.333  0.250  1.0
  Se  Se2  1  0.174  0.348  0.250  1.0
  Se  Se3  1  0.652  0.826  0.250  1.0
  Se  Se4  1  0.174  0.826  0.250  1.0
  Se  Se5  1  0.826  0.652  0.750  1.0
  Se  Se6  1  0.348  0.174  0.750  1.0
  Se  Se7  1  0.826  0.174  0.750  1.0
[/CIF]
.