The structure described by Nb4Cr is diamond structured and crystallizes in the cubic Fd-3m space group. The structure is zero-dimensional and consists of eight Nb4Cr clusters. Nb(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 Nb(1) atoms. is represented by the CIF card [CIF]
data_Nb4Cr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.531
_cell_length_b   6.531
_cell_length_c   6.531
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   197.001
_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
  Nb  Nb0  1  0.606  0.606  0.606  1.0
  Nb  Nb1  1  0.181  0.606  0.606  1.0
  Nb  Nb2  1  0.606  0.181  0.606  1.0
  Nb  Nb3  1  0.569  0.144  0.144  1.0
  Nb  Nb4  1  0.144  0.144  0.144  1.0
  Nb  Nb5  1  0.606  0.606  0.181  1.0
  Nb  Nb6  1  0.144  0.569  0.144  1.0
  Nb  Nb7  1  0.144  0.144  0.569  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 structure described by Nb4Cr is diamond structured and crystallizes in the cubic Fd-3m space group. The structure is zero-dimensional and consists of eight Nb4Cr clusters. Nb(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 Nb(1) atoms. is represented by the CIF card [CIF]
data_Nb4Cr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.531
_cell_length_b   6.531
_cell_length_c   6.531
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   197.001
_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
  Nb  Nb0  1  0.606  0.606  0.606  1.0
  Nb  Nb1  1  0.181  0.606  0.606  1.0
  Nb  Nb2  1  0.606  0.181  0.606  1.0
  Nb  Nb3  1  0.569  0.144  0.144  1.0
  Nb  Nb4  1  0.144  0.144  0.144  1.0
  Nb  Nb5  1  0.606  0.606  0.181  1.0
  Nb  Nb6  1  0.144  0.569  0.144  1.0
  Nb  Nb7  1  0.144  0.144  0.569  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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