The structure described by TmTaO4 crystallizes in the monoclinic P2/c space group. Tm(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Ta(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Tm(1) and one Ta(1) atom. In the second O site, O(1) is bonded to two equivalent Tm(1) and two equivalent Ta(1) atoms to form a mixture of distorted corner and edge-sharing OTm2Ta2 tetrahedra. is represented by the CIF card [CIF]
data_TmTaO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.060
_cell_length_b   5.245
_cell_length_c   5.393
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   96.180
_symmetry_Int_Tables_number   1
_cell_volume   142.314
_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
  Tm  Tm0  1  0.000  0.750  0.766  1.0
  Tm  Tm1  1  0.000  0.250  0.234  1.0
  Ta  Ta2  1  0.500  0.250  0.699  1.0
  Ta  Ta3  1  0.500  0.750  0.301  1.0
  O  O4  1  0.735  0.007  0.563  1.0
  O  O5  1  0.265  0.493  0.563  1.0
  O  O6  1  0.265  0.993  0.437  1.0
  O  O7  1  0.735  0.507  0.437  1.0
  O  O8  1  0.248  0.594  0.079  1.0
  O  O9  1  0.752  0.906  0.079  1.0
  O  O10  1  0.752  0.406  0.921  1.0
  O  O11  1  0.248  0.094  0.921  1.0
[/CIF]
.
The structure described by TmTaO4 crystallizes in the monoclinic P2/c space group. Tm(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Ta(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Tm(1) and one Ta(1) atom. In the second O site, O(1) is bonded to two equivalent Tm(1) and two equivalent Ta(1) atoms to form a mixture of distorted corner and edge-sharing OTm2Ta2 tetrahedra. is represented by the CIF card [CIF]
data_TmTaO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.060
_cell_length_b   5.245
_cell_length_c   5.393
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   96.180
_symmetry_Int_Tables_number   1
_cell_volume   142.314
_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
  Tm  Tm0  1  0.000  0.750  0.766  1.0
  Tm  Tm1  1  0.000  0.250  0.234  1.0
  Ta  Ta2  1  0.500  0.250  0.699  1.0
  Ta  Ta3  1  0.500  0.750  0.301  1.0
  O  O4  1  0.735  0.007  0.563  1.0
  O  O5  1  0.265  0.493  0.563  1.0
  O  O6  1  0.265  0.993  0.437  1.0
  O  O7  1  0.735  0.507  0.437  1.0
  O  O8  1  0.248  0.594  0.079  1.0
  O  O9  1  0.752  0.906  0.079  1.0
  O  O10  1  0.752  0.406  0.921  1.0
  O  O11  1  0.248  0.094  0.921  1.0
[/CIF]
.