The material structure described by AcBr3 crystallizes in the hexagonal P6_3/m space group. Ac(1) is bonded in a 9-coordinate geometry to nine equivalent Br(1) atoms. Br(1) is bonded in a trigonal non-coplanar geometry to three equivalent Ac(1) atoms. is represented by the CIF file [CIF]
data_AcBr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.168
_cell_length_b   8.168
_cell_length_c   4.723
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   272.929
_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  0.667  0.333  0.750  1.0
  Ac  Ac1  1  0.333  0.667  0.250  1.0
  Br  Br2  1  0.614  0.700  0.750  1.0
  Br  Br3  1  0.915  0.614  0.250  1.0
  Br  Br4  1  0.386  0.300  0.250  1.0
  Br  Br5  1  0.085  0.386  0.750  1.0
  Br  Br6  1  0.300  0.915  0.750  1.0
  Br  Br7  1  0.700  0.085  0.250  1.0
[/CIF]
.
The material structure described by AcBr3 crystallizes in the hexagonal P6_3/m space group. Ac(1) is bonded in a 9-coordinate geometry to nine equivalent Br(1) atoms. Br(1) is bonded in a trigonal non-coplanar geometry to three equivalent Ac(1) atoms. is represented by the CIF file [CIF]
data_AcBr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.168
_cell_length_b   8.168
_cell_length_c   4.723
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   272.929
_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  0.667  0.333  0.750  1.0
  Ac  Ac1  1  0.333  0.667  0.250  1.0
  Br  Br2  1  0.614  0.700  0.750  1.0
  Br  Br3  1  0.915  0.614  0.250  1.0
  Br  Br4  1  0.386  0.300  0.250  1.0
  Br  Br5  1  0.085  0.386  0.750  1.0
  Br  Br6  1  0.300  0.915  0.750  1.0
  Br  Br7  1  0.700  0.085  0.250  1.0
[/CIF]
.