data_Be2TcW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.03
_cell_length_b   4.03
_cell_length_c   2.98
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   100.81
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2TcW
_chemical_formula_sum   'Be2 Tc1 W1'
_cell_volume   47.48
_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  Be0  1  0.28  0.45  0.49  1.0
  Be  Be1  1  0.28  0.55  0.49  1.0
  Tc  Tc2  1  0.0  0.0  0.0  1.0
  W  W3  1  0.57  0.0  0.0  1.0

data_Be2TcW
_symmetry_space_group_name_H-M   Pm
_cell_length_a   4.03
_cell_length_b   2.98
_cell_length_c   4.03
_cell_angle_alpha   90.0
_cell_angle_beta   100.81
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   Be2TcW
_chemical_formula_sum   'Be2 Tc1 W1'
_cell_volume   47.48
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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  Be0  1  0.28  0.5  0.45  1.0
  Be  Be1  1  0.28  0.5  0.55  1.0
  Tc  Tc2  1  0.0  0.0  0.0  1.0
  W  W3  1  0.57  0.0  0.0  1.0

Be Be Tc W
Be Be Tc W 0 1 o o o 2 3 - o o 
Be2WTc crystallizes in the triclinic P1 space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a distorted single-bond geometry to one Be(2) and two equivalent W(1) atoms. The Be(1)-Be(2) bond length is 0.42 Å. There is one shorter (2.73 Å) and one longer (2.77 Å) Be(1)-W(1) bond length. In the second Be site, Be(2) is bonded in a 1-coordinate geometry to one Be(1) and two equivalent W(1) atoms. There is one shorter (2.43 Å) and one longer (2.47 Å) Be(2)-W(1) bond length. W(1) is bonded in a 6-coordinate geometry to two equivalent Be(1), two equivalent Be(2), and two equivalent Tc(1) atoms. There is one shorter (1.74 Å) and one longer (2.28 Å) W(1)-Tc(1) bond length. Tc(1) is bonded in a 1-coordinate geometry to two equivalent W(1) atoms.