data_SrBeBiW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.16
_cell_length_b   5.16
_cell_length_c   5.16
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrBeBiW
_chemical_formula_sum   'Sr1 Be1 Bi1 W1'
_cell_volume   97.06
_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
  Sr  Sr2  1  0.65  0.65  0.65  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Bi  Bi1  1  0.47  0.47  0.47  1.0
  W  W3  1  0.82  0.82  0.82  1.0

data_SrBeBiW
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.16
_cell_length_b   5.16
_cell_length_c   12.64
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrBeBiW
_chemical_formula_sum   'Sr3 Be3 Bi3 W3'
_cell_volume   291.19
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Sr  Sr0  3  0.0  0.0  0.35  1.0
  Be  Be1  3  0.0  0.0  0.0  1.0
  Bi  Bi2  3  0.0  0.0  0.53  1.0
  W  W3  3  0.0  0.0  0.18  1.0

Sr Be Bi W
Sr Be Bi W 0 2 o o o 0 3 o o o 1 3 - - - 
SrBeWBi crystallizes in the trigonal R3m space group. Sr(1) is bonded in a distorted linear geometry to three equivalent Be(1), one W(1), and one Bi(1) atom. All Sr(1)-Be(1) bond lengths are 2.99 Å. The Sr(1)-W(1) bond length is 2.23 Å. The Sr(1)-Bi(1) bond length is 2.23 Å. Be(1) is bonded to three equivalent Sr(1) and one W(1) atom to form distorted corner-sharing BeSr3W trigonal pyramids. The Be(1)-W(1) bond length is 2.23 Å. W(1) is bonded in a distorted linear geometry to one Sr(1) and one Be(1) atom. Bi(1) is bonded in a distorted single-bond geometry to one Sr(1) atom.