The material structure described by Ta3AgO8 is Brookite-derived structured and crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(2), one O(5), one O(7), and two equivalent O(6) atoms to form TaO6 octahedra that share  a cornercorner with one Ag(1)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, and edges with two equivalent Ag(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-56°. In the second Ta site, Ta(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the third Ta site, Ta(3) is bonded to one O(3), one O(4), one O(5), one O(7), and two equivalent O(8) atoms to form distorted TaO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, and corners with three equivalent Ag(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-66°. Ag(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted AgO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra, corners with three equivalent Ta(3)O6 octahedra, and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-66°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Ag(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Ag(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ta(2), one Ta(3), and one Ag(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ta(2), one Ta(3), and one Ag(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(3), and one Ag(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Ta(1) and one Ag(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Ta(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ta(2) and two equivalent Ta(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta3AgO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.265
_cell_length_b   7.764
_cell_length_c   15.846
_cell_angle_alpha   73.023
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   619.435
_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  0.259  0.010  0.165  1.0
  Ta  Ta1  1  0.762  0.757  0.084  1.0
  Ta  Ta2  1  0.265  0.500  0.165  1.0
  Ta  Ta3  1  0.759  0.990  0.335  1.0
  Ta  Ta4  1  0.765  0.500  0.335  1.0
  Ta  Ta5  1  0.262  0.243  0.416  1.0
  Ta  Ta6  1  0.738  0.757  0.584  1.0
  Ta  Ta7  1  0.235  0.500  0.665  1.0
  Ta  Ta8  1  0.241  0.010  0.665  1.0
  Ta  Ta9  1  0.735  0.500  0.835  1.0
  Ta  Ta10  1  0.238  0.243  0.916  1.0
  Ta  Ta11  1  0.741  0.990  0.835  1.0
  Ag  Ag12  1  0.759  0.268  0.078  1.0
  Ag  Ag13  1  0.259  0.732  0.422  1.0
  Ag  Ag14  1  0.741  0.268  0.578  1.0
  Ag  Ag15  1  0.241  0.732  0.922  1.0
  O  O16  1  0.148  0.133  0.035  1.0
  O  O17  1  0.575  0.948  0.110  1.0
  O  O18  1  0.458  0.644  0.059  1.0
  O  O19  1  0.957  0.524  0.099  1.0
  O  O20  1  0.352  0.272  0.157  1.0
  O  O21  1  0.943  0.059  0.225  1.0
  O  O22  1  0.091  0.789  0.155  1.0
  O  O23  1  0.443  0.941  0.275  1.0
  O  O24  1  0.596  0.576  0.218  1.0
  O  O25  1  0.852  0.728  0.343  1.0
  O  O26  1  0.096  0.424  0.282  1.0
  O  O27  1  0.591  0.211  0.345  1.0
  O  O28  1  0.075  0.052  0.390  1.0
  O  O29  1  0.648  0.867  0.465  1.0
  O  O30  1  0.457  0.476  0.401  1.0
  O  O31  1  0.042  0.644  0.559  1.0
  O  O32  1  0.958  0.356  0.441  1.0
  O  O33  1  0.543  0.524  0.599  1.0
  O  O34  1  0.352  0.133  0.535  1.0
  O  O35  1  0.925  0.948  0.610  1.0
  O  O36  1  0.409  0.789  0.655  1.0
  O  O37  1  0.904  0.576  0.718  1.0
  O  O38  1  0.148  0.272  0.657  1.0
  O  O39  1  0.404  0.424  0.782  1.0
  O  O40  1  0.557  0.059  0.725  1.0
  O  O41  1  0.909  0.211  0.845  1.0
  O  O42  1  0.057  0.941  0.775  1.0
  O  O43  1  0.648  0.728  0.843  1.0
  O  O44  1  0.043  0.476  0.901  1.0
  O  O45  1  0.542  0.356  0.941  1.0
  O  O46  1  0.425  0.052  0.890  1.0
  O  O47  1  0.852  0.867  0.965  1.0
[/CIF]
.
The material structure described by Ta3AgO8 is Brookite-derived structured and crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(2), one O(5), one O(7), and two equivalent O(6) atoms to form TaO6 octahedra that share  a cornercorner with one Ag(1)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, and edges with two equivalent Ag(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-56°. In the second Ta site, Ta(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the third Ta site, Ta(3) is bonded to one O(3), one O(4), one O(5), one O(7), and two equivalent O(8) atoms to form distorted TaO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, and corners with three equivalent Ag(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-66°. Ag(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted AgO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra, corners with three equivalent Ta(3)O6 octahedra, and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-66°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Ag(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Ag(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Ta(2), one Ta(3), and one Ag(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ta(2), one Ta(3), and one Ag(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(3), and one Ag(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Ta(1) and one Ag(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ta(1), one Ta(2), and one Ta(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ta(2) and two equivalent Ta(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ta3AgO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.265
_cell_length_b   7.764
_cell_length_c   15.846
_cell_angle_alpha   73.023
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   619.435
_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  0.259  0.010  0.165  1.0
  Ta  Ta1  1  0.762  0.757  0.084  1.0
  Ta  Ta2  1  0.265  0.500  0.165  1.0
  Ta  Ta3  1  0.759  0.990  0.335  1.0
  Ta  Ta4  1  0.765  0.500  0.335  1.0
  Ta  Ta5  1  0.262  0.243  0.416  1.0
  Ta  Ta6  1  0.738  0.757  0.584  1.0
  Ta  Ta7  1  0.235  0.500  0.665  1.0
  Ta  Ta8  1  0.241  0.010  0.665  1.0
  Ta  Ta9  1  0.735  0.500  0.835  1.0
  Ta  Ta10  1  0.238  0.243  0.916  1.0
  Ta  Ta11  1  0.741  0.990  0.835  1.0
  Ag  Ag12  1  0.759  0.268  0.078  1.0
  Ag  Ag13  1  0.259  0.732  0.422  1.0
  Ag  Ag14  1  0.741  0.268  0.578  1.0
  Ag  Ag15  1  0.241  0.732  0.922  1.0
  O  O16  1  0.148  0.133  0.035  1.0
  O  O17  1  0.575  0.948  0.110  1.0
  O  O18  1  0.458  0.644  0.059  1.0
  O  O19  1  0.957  0.524  0.099  1.0
  O  O20  1  0.352  0.272  0.157  1.0
  O  O21  1  0.943  0.059  0.225  1.0
  O  O22  1  0.091  0.789  0.155  1.0
  O  O23  1  0.443  0.941  0.275  1.0
  O  O24  1  0.596  0.576  0.218  1.0
  O  O25  1  0.852  0.728  0.343  1.0
  O  O26  1  0.096  0.424  0.282  1.0
  O  O27  1  0.591  0.211  0.345  1.0
  O  O28  1  0.075  0.052  0.390  1.0
  O  O29  1  0.648  0.867  0.465  1.0
  O  O30  1  0.457  0.476  0.401  1.0
  O  O31  1  0.042  0.644  0.559  1.0
  O  O32  1  0.958  0.356  0.441  1.0
  O  O33  1  0.543  0.524  0.599  1.0
  O  O34  1  0.352  0.133  0.535  1.0
  O  O35  1  0.925  0.948  0.610  1.0
  O  O36  1  0.409  0.789  0.655  1.0
  O  O37  1  0.904  0.576  0.718  1.0
  O  O38  1  0.148  0.272  0.657  1.0
  O  O39  1  0.404  0.424  0.782  1.0
  O  O40  1  0.557  0.059  0.725  1.0
  O  O41  1  0.909  0.211  0.845  1.0
  O  O42  1  0.057  0.941  0.775  1.0
  O  O43  1  0.648  0.728  0.843  1.0
  O  O44  1  0.043  0.476  0.901  1.0
  O  O45  1  0.542  0.356  0.941  1.0
  O  O46  1  0.425  0.052  0.890  1.0
  O  O47  1  0.852  0.867  0.965  1.0
[/CIF]
.