The material described by BeTa2 is Khatyrkite structured and crystallizes in the tetragonal I4/mcm space group. Be(1) is bonded in a 10-coordinate geometry to two equivalent Be(1) and eight equivalent Ta(1) atoms. Ta(1) is bonded in a 5-coordinate geometry to four equivalent Be(1) and one Ta(1) atom. is represented by the CIF card [CIF]
data_Ta2Be
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.902
_cell_length_b   4.911
_cell_length_c   4.911
_cell_angle_alpha   75.577
_cell_angle_beta   60.061
_cell_angle_gamma   60.061
_symmetry_Int_Tables_number   1
_cell_volume   88.798
_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  0.160  0.500  0.180  1.0
  Ta  Ta1  1  0.340  0.820  0.500  1.0
  Ta  Ta2  1  0.660  0.180  0.500  1.0
  Ta  Ta3  1  0.840  0.500  0.820  1.0
  Be  Be4  1  0.250  0.000  0.000  1.0
  Be  Be5  1  0.750  0.000  0.000  1.0
[/CIF]
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The material described by BeTa2 is Khatyrkite structured and crystallizes in the tetragonal I4/mcm space group. Be(1) is bonded in a 10-coordinate geometry to two equivalent Be(1) and eight equivalent Ta(1) atoms. Ta(1) is bonded in a 5-coordinate geometry to four equivalent Be(1) and one Ta(1) atom. is represented by the CIF card [CIF]
data_Ta2Be
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.902
_cell_length_b   4.911
_cell_length_c   4.911
_cell_angle_alpha   75.577
_cell_angle_beta   60.061
_cell_angle_gamma   60.061
_symmetry_Int_Tables_number   1
_cell_volume   88.798
_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  0.160  0.500  0.180  1.0
  Ta  Ta1  1  0.340  0.820  0.500  1.0
  Ta  Ta2  1  0.660  0.180  0.500  1.0
  Ta  Ta3  1  0.840  0.500  0.820  1.0
  Be  Be4  1  0.250  0.000  0.000  1.0
  Be  Be5  1  0.750  0.000  0.000  1.0
[/CIF]
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