data_CrTcW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.07
_cell_length_b   3.07
_cell_length_c   6.22
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CrTcW2
_chemical_formula_sum   'Cr1 Tc1 W2'
_cell_volume   58.62
_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
  Cr  Cr0  1  0.0  0.0  0.0  1.0
  Tc  Tc1  1  0.0  0.0  0.11  1.0
  W  W2  1  0.54  0.54  0.75  1.0
  W  W3  1  0.54  0.54  0.47  1.0

data_CrTcW2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.34
_cell_length_b   4.34
_cell_length_c   6.22
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CrTcW2
_chemical_formula_sum   'Cr2 Tc2 W4'
_cell_volume   117.24
_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
  Cr  Cr0  2  0.0  0.0  0.0  1.0
  Tc  Tc1  2  0.0  0.0  0.11  1.0
  W  W2  2  0.04  0.5  0.47  1.0
  W  W3  2  0.04  0.5  0.75  1.0

Cr Tc W W
Cr Tc W W 0 1 o o o 2 3 o o o 
W2CrTc crystallizes in the monoclinic Cm space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one W(2) and four equivalent Cr(1) atoms. The W(1)-W(2) bond length is 1.75 Å. There are a spread of W(1)-Cr(1) bond distances ranging from 2.55-2.80 Å. In the second W site, W(2) is bonded in a 9-coordinate geometry to one W(1), four equivalent W(2), and four equivalent Tc(1) atoms. All W(2)-W(2) bond lengths are 3.07 Å. There are a spread of W(2)-Tc(1) bond distances ranging from 3.01-3.22 Å. Cr(1) is bonded in a single-bond geometry to four equivalent W(1) and one Tc(1) atom. The Cr(1)-Tc(1) bond length is 0.67 Å. Tc(1) is bonded in a single-bond geometry to four equivalent W(2) and one Cr(1) atom.