data_Ta5Os4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.12
_cell_length_b   8.12
_cell_length_c   5.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta5Os4
_chemical_formula_sum   'Ta10 Os8'
_cell_volume   305.06
_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  Ta8  1  0.33  0.0  0.01  1.0
  Ta  Ta9  1  0.83  0.02  0.01  1.0
  Ta  Ta10  1  0.89  0.01  0.01  1.0
  Ta  Ta11  1  0.79  0.0  0.34  1.0
  Ta  Ta12  1  0.11  0.01  0.34  1.0
  Ta  Ta13  1  0.17  0.02  0.34  1.0
  Ta  Ta14  1  0.0  0.69  0.67  1.0
  Ta  Ta15  1  0.06  0.34  0.0  1.0
  Ta  Ta16  1  0.06  0.34  0.67  1.0
  Ta  Ta17  1  0.0  0.69  0.0  1.0
  Os  Os0  1  0.0  0.0  0.67  1.0
  Os  Os1  1  0.0  0.0  0.0  1.0
  Os  Os2  1  0.89  0.0  0.01  1.0
  Os  Os3  1  0.55  0.24  0.01  1.0
  Os  Os4  1  0.62  0.8  0.01  1.0
  Os  Os5  1  0.23  0.0  0.34  1.0
  Os  Os6  1  0.38  0.8  0.34  1.0
  Os  Os7  1  0.45  0.24  0.34  1.0

data_Ta5Os4
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.34
_cell_length_b   8.12
_cell_length_c   8.12
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta5Os4
_chemical_formula_sum   'Ta10 Os8'
_cell_volume   305.06
_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  0.0  0.0  0.69  1.0
  Ta  Ta1  1  0.0  0.06  0.34  1.0
  Ta  Ta2  1  0.01  0.33  0.0  1.0
  Ta  Ta3  1  0.01  0.83  0.02  1.0
  Ta  Ta4  1  0.01  0.89  0.01  1.0
  Ta  Ta5  1  0.34  0.11  0.01  1.0
  Ta  Ta6  1  0.34  0.17  0.02  1.0
  Ta  Ta7  1  0.34  0.79  0.0  1.0
  Ta  Ta8  1  0.67  0.0  0.69  1.0
  Ta  Ta9  1  0.67  0.06  0.34  1.0
  Os  Os10  1  0.0  0.0  0.0  1.0
  Os  Os11  1  0.01  0.55  0.24  1.0
  Os  Os12  1  0.01  0.62  0.8  1.0
  Os  Os13  1  0.01  0.89  0.0  1.0
  Os  Os14  1  0.34  0.23  0.0  1.0
  Os  Os15  1  0.34  0.38  0.8  1.0
  Os  Os16  1  0.34  0.45  0.24  1.0
  Os  Os17  1  0.67  0.0  0.0  1.0

Ta Ta Ta Ta Ta Ta Ta Ta Ta Ta Os Os Os Os Os Os Os Os
Ta5Os4 crystallizes in the triclinic P1 space group. There are ten inequivalent Ta sites. In the first Ta site, Ta(1) is bonded in a distorted water-like geometry to one Os(4), one Os(6), one Os(7), and one Os(8) atom. The Ta(1)-Os(4) bond length is 1.86 Å. The Ta(1)-Os(6) bond length is 1.94 Å. The Ta(1)-Os(7) bond length is 2.59 Å. The Ta(1)-Os(8) bond length is 2.42 Å. In the second Ta site, Ta(2) is bonded in a 3-coordinate geometry to one Ta(3), one Ta(4), one Os(3), and one Os(5) atom. The Ta(2)-Ta(3) bond length is 0.52 Å. The Ta(2)-Ta(4) bond length is 1.79 Å. The Ta(2)-Os(3) bond length is 0.56 Å. The Ta(2)-Os(5) bond length is 1.79 Å. In the third Ta site, Ta(3) is bonded in a single-bond geometry to one Ta(2), one Os(2), and one Os(3) atom. The Ta(3)-Os(2) bond length is 0.92 Å. The Ta(3)-Os(3) bond length is 0.10 Å. In the fourth Ta site, Ta(4) is bonded in a 4-coordinate geometry to one Ta(2), one Os(1), one Os(5), and one Os(7) atom. The Ta(4)-Os(1) bond length is 2.47 Å. The Ta(4)-Os(5) bond length is 2.34 Å. The Ta(4)-Os(7) bond length is 2.85 Å. In the fifth Ta site, Ta(5) is bonded in a distorted trigonal planar geometry to one Ta(6), one Os(1), and one Os(2) atom. The Ta(5)-Ta(6) bond length is 0.47 Å. The Ta(5)-Os(1) bond length is 1.96 Å. The Ta(5)-Os(2) bond length is 1.96 Å. In the sixth Ta site, Ta(6) is bonded in a distorted single-bond geometry to one Ta(5), one Os(6), and one Os(8) atom. The Ta(6)-Os(6) bond length is 0.62 Å. The Ta(6)-Os(8) bond length is 2.06 Å. In the seventh Ta site, Ta(7) is bonded in a 2-coordinate geometry to one Ta(10), one Os(1), and one Os(7) atom. The Ta(7)-Ta(10) bond length is 1.76 Å. The Ta(7)-Os(1) bond length is 2.53 Å. The Ta(7)-Os(7) bond length is 3.31 Å. In the eighth Ta site, Ta(8) is bonded in a 1-coordinate geometry to one Ta(9) and one Os(7) atom. The Ta(8)-Ta(9) bond length is 1.76 Å. The Ta(8)-Os(7) bond length is 3.74 Å. In the ninth Ta site, Ta(9) is bonded in a distorted L-shaped geometry to one Ta(8), one Os(1), and one Os(7) atom. The Ta(9)-Os(1) bond length is 2.59 Å. The Ta(9)-Os(7) bond length is 3.74 Å. In the tenth Ta site, Ta(10) is bonded in a distorted L-shaped geometry to one Ta(7), one Os(2), and one Os(7) atom. The Ta(10)-Os(2) bond length is 2.53 Å. The Ta(10)-Os(7) bond length is 3.31 Å. There are eight inequivalent Os sites. In the first Os site, Os(1) is bonded in a 1-coordinate geometry to one Ta(4), one Ta(5), one Ta(7), and one Ta(9) atom. In the second Os site, Os(2) is bonded in a 3-coordinate geometry to one Ta(10), one Ta(3), one Ta(5), and one Os(3) atom. The Os(2)-Os(3) bond length is 0.88 Å. In the third Os site, Os(3) is bonded in a single-bond geometry to one Ta(2), one Ta(3), and one Os(2) atom. In the fourth Os site, Os(4) is bonded in a distorted single-bond geometry to one Ta(1) and one Os(8) atom. The Os(4)-Os(8) bond length is 1.97 Å. In the fifth Os site, Os(5) is bonded in a distorted single-bond geometry to one Ta(2), one Ta(4), and one Os(7) atom. The Os(5)-Os(7) bond length is 2.57 Å. In the sixth Os site, Os(6) is bonded in a single-bond geometry to one Ta(1), one Ta(6), one Os(7), and one Os(8) atom. The Os(6)-Os(7) bond length is 2.52 Å. The Os(6)-Os(8) bond length is 1.84 Å. In the seventh Os site, Os(7) is bonded in a 8-coordinate geometry to one Ta(1), one Ta(10), one Ta(4), one Ta(7), one Ta(8), one Ta(9), one Os(5), and one Os(6) atom. In the eighth Os site, Os(8) is bonded in a 4-coordinate geometry to one Ta(1), one Ta(6), one Os(4), and one Os(6) atom.