data_SrBe2W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.59
_cell_length_b   4.59
_cell_length_c   4.59
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrBe2W
_chemical_formula_sum   'Sr1 Be2 W1'
_cell_volume   68.38
_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  0.0  0.0  0.0  1.0
  Be  Be0  1  0.62  0.62  0.62  1.0
  Be  Be1  1  0.87  0.87  0.87  1.0
  W  W3  1  0.25  0.25  0.25  1.0

data_SrBe2W
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.59
_cell_length_b   4.59
_cell_length_c   11.24
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrBe2W
_chemical_formula_sum   'Sr3 Be6 W3'
_cell_volume   205.14
_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  0.0  1.0
  Be  Be1  3  0.0  0.0  0.13  1.0
  Be  Be2  3  0.0  0.0  0.38  1.0
  W  W3  3  0.0  0.0  0.75  1.0

Sr Be Be W
Sr Be Be W 0 2 - - - 0 1 o - - 0 1 - o - 0 1 - - o 0 3 o o o 0 3 o o - 0 3 - o o 0 3 o - o 1 2 o - o 1 2 - o o 1 2 o o - 1 2 o o o 1 3 o o + 1 3 o + o 1 3 + o o 2 3 + + o 2 3 + o + 2 3 o + + 
SrBe2W crystallizes in the trigonal R3m space group. Sr(1) is bonded in a distorted single-bond geometry to one Be(2), three equivalent Be(1), and four equivalent W(1) atoms. The Sr(1)-Be(2) bond length is 1.48 Å. All Sr(1)-Be(1) bond lengths are 2.70 Å. There is one shorter (2.76 Å) and three longer (2.83 Å) Sr(1)-W(1) bond lengths. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a hexagonal planar geometry to three equivalent Sr(1) and three equivalent W(1) atoms. All Be(1)-W(1) bond lengths are 2.70 Å. In the second Be site, Be(2) is bonded in a single-bond geometry to one Sr(1) and three equivalent W(1) atoms. All Be(2)-W(1) bond lengths are 2.70 Å. W(1) is bonded in a 10-coordinate geometry to four equivalent Sr(1), three equivalent Be(1), and three equivalent Be(2) atoms.