The material structure described by BeTa4 is Iron carbide-like structured and crystallizes in the cubic Fd-3m space group. The structure is zero-dimensional and consists of eight BeTa4 clusters. Be(1) is bonded in a tetrahedral geometry to four equivalent Ta(1) atoms. Ta(1) is bonded in a distorted single-bond geometry to one Be(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta4Be
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.386
_cell_length_b   6.386
_cell_length_c   6.386
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   184.114
_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  0.611  0.611  0.611  1.0
  Ta  Ta1  1  0.168  0.611  0.611  1.0
  Ta  Ta2  1  0.611  0.168  0.611  1.0
  Ta  Ta3  1  0.582  0.139  0.139  1.0
  Ta  Ta4  1  0.139  0.139  0.139  1.0
  Ta  Ta5  1  0.611  0.611  0.168  1.0
  Ta  Ta6  1  0.139  0.582  0.139  1.0
  Ta  Ta7  1  0.139  0.139  0.582  1.0
  Be  Be8  1  0.000  0.000  0.000  1.0
  Be  Be9  1  0.750  0.750  0.750  1.0
[/CIF]
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The material structure described by BeTa4 is Iron carbide-like structured and crystallizes in the cubic Fd-3m space group. The structure is zero-dimensional and consists of eight BeTa4 clusters. Be(1) is bonded in a tetrahedral geometry to four equivalent Ta(1) atoms. Ta(1) is bonded in a distorted single-bond geometry to one Be(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta4Be
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.386
_cell_length_b   6.386
_cell_length_c   6.386
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   184.114
_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  0.611  0.611  0.611  1.0
  Ta  Ta1  1  0.168  0.611  0.611  1.0
  Ta  Ta2  1  0.611  0.168  0.611  1.0
  Ta  Ta3  1  0.582  0.139  0.139  1.0
  Ta  Ta4  1  0.139  0.139  0.139  1.0
  Ta  Ta5  1  0.611  0.611  0.168  1.0
  Ta  Ta6  1  0.139  0.582  0.139  1.0
  Ta  Ta7  1  0.139  0.139  0.582  1.0
  Be  Be8  1  0.000  0.000  0.000  1.0
  Be  Be9  1  0.750  0.750  0.750  1.0
[/CIF]
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