The material described by Ta3Ge crystallizes in the tetragonal I-4 space group. There are three inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a 4-coordinate geometry to four equivalent Ge(1) atoms. In the second Ta site, Ta(3) is bonded in a 2-coordinate geometry to two equivalent Ge(1) atoms. In the third Ta site, Ta(2) is bonded in a 3-coordinate geometry to three equivalent Ge(1) atoms. Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ta(3), three equivalent Ta(2), and four equivalent Ta(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.163
_cell_length_b   7.767
_cell_length_c   7.766
_cell_angle_alpha   83.646
_cell_angle_beta   70.595
_cell_angle_gamma   70.594
_symmetry_Int_Tables_number   1
_cell_volume   277.046
_cell_formula_units_Z   4
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  0.346  0.659  0.629  1.0
  Ta  Ta1  1  0.025  0.629  0.341  1.0
  Ta  Ta2  1  0.995  0.371  0.659  1.0
  Ta  Ta3  1  0.635  0.340  0.371  1.0
  Ta  Ta4  1  0.949  0.026  0.596  1.0
  Ta  Ta5  1  0.455  0.596  0.974  1.0
  Ta  Ta6  1  0.025  0.404  0.026  1.0
  Ta  Ta7  1  0.571  0.974  0.404  1.0
  Ta  Ta8  1  0.145  0.985  0.183  1.0
  Ta  Ta9  1  0.672  0.183  0.015  1.0
  Ta  Ta10  1  0.869  0.818  0.985  1.0
  Ta  Ta11  1  0.314  0.015  0.817  1.0
  Ge  Ge12  1  0.196  0.264  0.318  1.0
  Ge  Ge13  1  0.486  0.318  0.736  1.0
  Ge  Ge14  1  0.541  0.682  0.264  1.0
  Ge  Ge15  1  0.777  0.736  0.682  1.0
[/CIF]
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The material described by Ta3Ge crystallizes in the tetragonal I-4 space group. There are three inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a 4-coordinate geometry to four equivalent Ge(1) atoms. In the second Ta site, Ta(3) is bonded in a 2-coordinate geometry to two equivalent Ge(1) atoms. In the third Ta site, Ta(2) is bonded in a 3-coordinate geometry to three equivalent Ge(1) atoms. Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ta(3), three equivalent Ta(2), and four equivalent Ta(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.163
_cell_length_b   7.767
_cell_length_c   7.766
_cell_angle_alpha   83.646
_cell_angle_beta   70.595
_cell_angle_gamma   70.594
_symmetry_Int_Tables_number   1
_cell_volume   277.046
_cell_formula_units_Z   4
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  0.346  0.659  0.629  1.0
  Ta  Ta1  1  0.025  0.629  0.341  1.0
  Ta  Ta2  1  0.995  0.371  0.659  1.0
  Ta  Ta3  1  0.635  0.340  0.371  1.0
  Ta  Ta4  1  0.949  0.026  0.596  1.0
  Ta  Ta5  1  0.455  0.596  0.974  1.0
  Ta  Ta6  1  0.025  0.404  0.026  1.0
  Ta  Ta7  1  0.571  0.974  0.404  1.0
  Ta  Ta8  1  0.145  0.985  0.183  1.0
  Ta  Ta9  1  0.672  0.183  0.015  1.0
  Ta  Ta10  1  0.869  0.818  0.985  1.0
  Ta  Ta11  1  0.314  0.015  0.817  1.0
  Ge  Ge12  1  0.196  0.264  0.318  1.0
  Ge  Ge13  1  0.486  0.318  0.736  1.0
  Ge  Ge14  1  0.541  0.682  0.264  1.0
  Ge  Ge15  1  0.777  0.736  0.682  1.0
[/CIF]
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