data_BeAgW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.3
_cell_length_b   9.3
_cell_length_c   9.3
_cell_angle_alpha   17.06
_cell_angle_beta   17.06
_cell_angle_gamma   17.06
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeAgW2
_chemical_formula_sum   'Be1 Ag1 W2'
_cell_volume   60.37
_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
  Be  Be1  1  0.0  0.0  0.0  1.0
  Ag  Ag0  1  0.0  0.0  0.74  1.0
  W  W2  1  0.0  0.0  0.4  1.0
  W  W3  1  0.0  0.0  0.08  1.0

data_BeAgW2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.78
_cell_length_b   2.76
_cell_length_c   9.3
_cell_angle_alpha   90.0
_cell_angle_beta   99.86
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BeAgW2
_chemical_formula_sum   'Be2 Ag2 W4'
_cell_volume   120.75
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Be  Be0  2  0.0  0.0  0.0  1.0
  Ag  Ag1  2  0.0  0.0  0.26  1.0
  W  W2  2  0.0  0.0  0.6  1.0
  W  W3  2  0.0  0.0  0.92  1.0

Be Ag W W
Be Ag W W 0 3 o o o 0 1 o o - 1 1 o + - 1 1 + - o 1 1 + o - 1 2 o o o 1 3 o o + 2 2 o + - 2 2 + - o 2 2 + o - 2 3 o o o 
BeW2Ag crystallizes in the monoclinic Cm space group. Be(1) is bonded in a single-bond geometry to one W(2) and one Ag(1) atom. The Be(1)-W(2) bond length is 0.77 Å. The Be(1)-Ag(1) bond length is 2.41 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded to one W(2), six equivalent W(1), and one Ag(1) atom to form a mixture of distorted corner and edge-sharing WAgW7 hexagonal bipyramids. The W(1)-W(2) bond length is 2.95 Å. All W(1)-W(1) bond lengths are 2.76 Å. The W(1)-Ag(1) bond length is 3.18 Å. In the second W site, W(2) is bonded in a single-bond geometry to one Be(1) and one W(1) atom. Ag(1) is bonded in a 1-coordinate geometry to one Be(1) and one W(1) atom.