The compound described by Ta4SnO12 crystallizes in the triclinic P1 space group. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(11), one O(2), one O(4), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 29-53°. In the second Ta site, Ta(2) is bonded to one O(2), one O(3), one O(5), one O(7), one O(8), and one O(9) atom to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 28-54°. In the third Ta site, Ta(3) is bonded to one O(10), one O(11), one O(4), one O(5), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 29-53°. In the fourth Ta site, Ta(4) is bonded to one O(11), one O(12), one O(2), one O(5), one O(7), and one O(9) atom to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 28-54°. Sn(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(10), one O(12), and one O(3) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ta(1) and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(2), and one Ta(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ta(2) and one Sn(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Ta(1) and one Ta(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Ta(2), one Ta(3), and one Ta(4) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Ta(1) and one Ta(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Ta(2) and one Ta(4) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Ta(1), one Ta(2), and one Ta(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Ta(2) and one Ta(4) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Ta(3) and one Sn(1) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Ta(1), one Ta(3), and one Ta(4) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Ta(4) and one Sn(1) atom. is represented by the CIF card [CIF]
data_Ta4SnO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.040
_cell_length_b   5.566
_cell_length_c   9.202
_cell_angle_alpha   97.469
_cell_angle_beta   104.459
_cell_angle_gamma   90.122
_symmetry_Int_Tables_number   1
_cell_volume   247.701
_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  0.061  0.359  0.649  1.0
  Ta  Ta1  1  0.424  0.141  0.347  1.0
  Ta  Ta2  1  0.558  0.859  0.656  1.0
  Ta  Ta3  1  0.918  0.646  0.348  1.0
  Sn  Sn4  1  0.961  0.243  0.001  1.0
  O  O5  1  0.021  0.440  0.851  1.0
  O  O6  1  0.141  0.333  0.432  1.0
  O  O7  1  0.204  0.058  0.144  1.0
  O  O8  1  0.271  0.089  0.692  1.0
  O  O9  1  0.283  0.834  0.433  1.0
  O  O10  1  0.385  0.592  0.698  1.0
  O  O11  1  0.596  0.413  0.309  1.0
  O  O12  1  0.700  0.166  0.567  1.0
  O  O13  1  0.706  0.912  0.299  1.0
  O  O14  1  0.761  0.970  0.859  1.0
  O  O15  1  0.843  0.669  0.567  1.0
  O  O16  1  0.937  0.527  0.147  1.0
[/CIF]
.
The compound described by Ta4SnO12 crystallizes in the triclinic P1 space group. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(11), one O(2), one O(4), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 29-53°. In the second Ta site, Ta(2) is bonded to one O(2), one O(3), one O(5), one O(7), one O(8), and one O(9) atom to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 28-54°. In the third Ta site, Ta(3) is bonded to one O(10), one O(11), one O(4), one O(5), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 29-53°. In the fourth Ta site, Ta(4) is bonded to one O(11), one O(12), one O(2), one O(5), one O(7), and one O(9) atom to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 28-54°. Sn(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(10), one O(12), and one O(3) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ta(1) and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(2), and one Ta(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ta(2) and one Sn(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Ta(1) and one Ta(3) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Ta(2), one Ta(3), and one Ta(4) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Ta(1) and one Ta(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Ta(2) and one Ta(4) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Ta(1), one Ta(2), and one Ta(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Ta(2) and one Ta(4) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Ta(3) and one Sn(1) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Ta(1), one Ta(3), and one Ta(4) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Ta(4) and one Sn(1) atom. is represented by the CIF card [CIF]
data_Ta4SnO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.040
_cell_length_b   5.566
_cell_length_c   9.202
_cell_angle_alpha   97.469
_cell_angle_beta   104.459
_cell_angle_gamma   90.122
_symmetry_Int_Tables_number   1
_cell_volume   247.701
_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  0.061  0.359  0.649  1.0
  Ta  Ta1  1  0.424  0.141  0.347  1.0
  Ta  Ta2  1  0.558  0.859  0.656  1.0
  Ta  Ta3  1  0.918  0.646  0.348  1.0
  Sn  Sn4  1  0.961  0.243  0.001  1.0
  O  O5  1  0.021  0.440  0.851  1.0
  O  O6  1  0.141  0.333  0.432  1.0
  O  O7  1  0.204  0.058  0.144  1.0
  O  O8  1  0.271  0.089  0.692  1.0
  O  O9  1  0.283  0.834  0.433  1.0
  O  O10  1  0.385  0.592  0.698  1.0
  O  O11  1  0.596  0.413  0.309  1.0
  O  O12  1  0.700  0.166  0.567  1.0
  O  O13  1  0.706  0.912  0.299  1.0
  O  O14  1  0.761  0.970  0.859  1.0
  O  O15  1  0.843  0.669  0.567  1.0
  O  O16  1  0.937  0.527  0.147  1.0
[/CIF]
.