The structure described by Ta6Zn7 is Frank-Kasper $\mu$ Phase structured and crystallizes in the trigonal R-3m space group. There are three inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a 15-coordinate geometry to three equivalent Ta(1), six equivalent Ta(3), and six equivalent Zn(2) atoms. In the second Ta site, Ta(2) is bonded in a 16-coordinate geometry to one Ta(3), three equivalent Ta(2), three equivalent Zn(1), and nine equivalent Zn(2) atoms. In the third Ta site, Ta(3) is bonded in a 14-coordinate geometry to one Ta(2), one Ta(3), six equivalent Ta(1), and six equivalent Zn(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to six equivalent Ta(2) and six equivalent Zn(2) atoms to form ZnTa6Zn6 cuboctahedra that share corners with twelve equivalent Zn(2)Ta7Zn5 cuboctahedra, edges with six equivalent Zn(1)Ta6Zn6 cuboctahedra, and faces with eighteen equivalent Zn(2)Ta7Zn5 cuboctahedra. In the second Zn site, Zn(2) is bonded to two equivalent Ta(1), two equivalent Ta(3), three equivalent Ta(2), one Zn(1), and four equivalent Zn(2) atoms to form ZnTa7Zn5 cuboctahedra that share corners with two equivalent Zn(1)Ta6Zn6 cuboctahedra, corners with thirteen equivalent Zn(2)Ta7Zn5 cuboctahedra, edges with five equivalent Zn(2)Ta7Zn5 cuboctahedra, faces with three equivalent Zn(1)Ta6Zn6 cuboctahedra, and faces with ten equivalent Zn(2)Ta7Zn5 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta6Zn7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.023
_cell_length_b   5.023
_cell_length_c   9.563
_cell_angle_alpha   74.775
_cell_angle_beta   74.775
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   199.087
_cell_formula_units_Z   1
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  0.165  0.165  0.506  1.0
  Ta  Ta1  1  0.835  0.835  0.494  1.0
  Ta  Ta2  1  0.351  0.351  0.948  1.0
  Ta  Ta3  1  0.649  0.649  0.052  1.0
  Ta  Ta4  1  0.454  0.454  0.637  1.0
  Ta  Ta5  1  0.546  0.546  0.363  1.0
  Zn  Zn6  1  0.000  0.000  0.000  1.0
  Zn  Zn7  1  0.586  0.094  0.226  1.0
  Zn  Zn8  1  0.094  0.094  0.226  1.0
  Zn  Zn9  1  0.094  0.586  0.226  1.0
  Zn  Zn10  1  0.414  0.906  0.774  1.0
  Zn  Zn11  1  0.906  0.906  0.774  1.0
  Zn  Zn12  1  0.906  0.414  0.774  1.0
[/CIF]
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The structure described by Ta6Zn7 is Frank-Kasper $\mu$ Phase structured and crystallizes in the trigonal R-3m space group. There are three inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a 15-coordinate geometry to three equivalent Ta(1), six equivalent Ta(3), and six equivalent Zn(2) atoms. In the second Ta site, Ta(2) is bonded in a 16-coordinate geometry to one Ta(3), three equivalent Ta(2), three equivalent Zn(1), and nine equivalent Zn(2) atoms. In the third Ta site, Ta(3) is bonded in a 14-coordinate geometry to one Ta(2), one Ta(3), six equivalent Ta(1), and six equivalent Zn(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to six equivalent Ta(2) and six equivalent Zn(2) atoms to form ZnTa6Zn6 cuboctahedra that share corners with twelve equivalent Zn(2)Ta7Zn5 cuboctahedra, edges with six equivalent Zn(1)Ta6Zn6 cuboctahedra, and faces with eighteen equivalent Zn(2)Ta7Zn5 cuboctahedra. In the second Zn site, Zn(2) is bonded to two equivalent Ta(1), two equivalent Ta(3), three equivalent Ta(2), one Zn(1), and four equivalent Zn(2) atoms to form ZnTa7Zn5 cuboctahedra that share corners with two equivalent Zn(1)Ta6Zn6 cuboctahedra, corners with thirteen equivalent Zn(2)Ta7Zn5 cuboctahedra, edges with five equivalent Zn(2)Ta7Zn5 cuboctahedra, faces with three equivalent Zn(1)Ta6Zn6 cuboctahedra, and faces with ten equivalent Zn(2)Ta7Zn5 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta6Zn7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.023
_cell_length_b   5.023
_cell_length_c   9.563
_cell_angle_alpha   74.775
_cell_angle_beta   74.775
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   199.087
_cell_formula_units_Z   1
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  0.165  0.165  0.506  1.0
  Ta  Ta1  1  0.835  0.835  0.494  1.0
  Ta  Ta2  1  0.351  0.351  0.948  1.0
  Ta  Ta3  1  0.649  0.649  0.052  1.0
  Ta  Ta4  1  0.454  0.454  0.637  1.0
  Ta  Ta5  1  0.546  0.546  0.363  1.0
  Zn  Zn6  1  0.000  0.000  0.000  1.0
  Zn  Zn7  1  0.586  0.094  0.226  1.0
  Zn  Zn8  1  0.094  0.094  0.226  1.0
  Zn  Zn9  1  0.094  0.586  0.226  1.0
  Zn  Zn10  1  0.414  0.906  0.774  1.0
  Zn  Zn11  1  0.906  0.906  0.774  1.0
  Zn  Zn12  1  0.906  0.414  0.774  1.0
[/CIF]
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