The material described by Ta4Cr is Iron carbide-like structured and crystallizes in the cubic Fd-3m space group. The structure is zero-dimensional and consists of eight Ta4Cr clusters. Ta(1) is bonded in a distorted single-bond geometry to one Cr(1) atom. Cr(1) is bonded in a tetrahedral geometry to four equivalent Ta(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta4Cr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.532
_cell_length_b   6.532
_cell_length_c   6.532
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   197.068
_cell_formula_units_Z   2
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
  Ta  Ta0  1  0.607  0.607  0.607  1.0
  Ta  Ta1  1  0.180  0.607  0.607  1.0
  Ta  Ta2  1  0.607  0.180  0.607  1.0
  Ta  Ta3  1  0.570  0.143  0.143  1.0
  Ta  Ta4  1  0.143  0.143  0.143  1.0
  Ta  Ta5  1  0.607  0.607  0.180  1.0
  Ta  Ta6  1  0.143  0.570  0.143  1.0
  Ta  Ta7  1  0.143  0.143  0.570  1.0
  Cr  Cr8  1  0.000  0.000  0.000  1.0
  Cr  Cr9  1  0.750  0.750  0.750  1.0
[/CIF]
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The material described by Ta4Cr is Iron carbide-like structured and crystallizes in the cubic Fd-3m space group. The structure is zero-dimensional and consists of eight Ta4Cr clusters. Ta(1) is bonded in a distorted single-bond geometry to one Cr(1) atom. Cr(1) is bonded in a tetrahedral geometry to four equivalent Ta(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta4Cr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.532
_cell_length_b   6.532
_cell_length_c   6.532
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   197.068
_cell_formula_units_Z   2
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
  Ta  Ta0  1  0.607  0.607  0.607  1.0
  Ta  Ta1  1  0.180  0.607  0.607  1.0
  Ta  Ta2  1  0.607  0.180  0.607  1.0
  Ta  Ta3  1  0.570  0.143  0.143  1.0
  Ta  Ta4  1  0.143  0.143  0.143  1.0
  Ta  Ta5  1  0.607  0.607  0.180  1.0
  Ta  Ta6  1  0.143  0.570  0.143  1.0
  Ta  Ta7  1  0.143  0.143  0.570  1.0
  Cr  Cr8  1  0.000  0.000  0.000  1.0
  Cr  Cr9  1  0.750  0.750  0.750  1.0
[/CIF]
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