The material described by LaTaO4 crystallizes in the orthorhombic Cmc2_1 space group. La(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(2), three equivalent O(3), and three equivalent O(4) atoms. Ta(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 11-40°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one La(1) and two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent La(1) and two equivalent Ta(1) atoms. In the third O site, O(3) is bonded to three equivalent La(1) and one Ta(1) atom to form corner-sharing OLa3Ta tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to three equivalent La(1) and one Ta(1) atom. is represented by the CIF card [CIF]
data_LaTaO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.632
_cell_length_b   7.632
_cell_length_c   5.646
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   149.990
_symmetry_Int_Tables_number   1
_cell_volume   164.451
_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
  La  La0  1  0.828  0.172  0.169  1.0
  La  La1  1  0.172  0.828  0.669  1.0
  Ta  Ta2  1  0.585  0.415  0.216  1.0
  Ta  Ta3  1  0.415  0.585  0.716  1.0
  O  O4  1  0.913  0.087  0.750  1.0
  O  O5  1  0.087  0.913  0.250  1.0
  O  O6  1  0.470  0.530  0.059  1.0
  O  O7  1  0.530  0.470  0.559  1.0
  O  O8  1  0.699  0.301  0.423  1.0
  O  O9  1  0.301  0.699  0.923  1.0
  O  O10  1  0.664  0.336  0.949  1.0
  O  O11  1  0.336  0.664  0.449  1.0
[/CIF]
.
The material described by LaTaO4 crystallizes in the orthorhombic Cmc2_1 space group. La(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(2), three equivalent O(3), and three equivalent O(4) atoms. Ta(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 11-40°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one La(1) and two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent La(1) and two equivalent Ta(1) atoms. In the third O site, O(3) is bonded to three equivalent La(1) and one Ta(1) atom to form corner-sharing OLa3Ta tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to three equivalent La(1) and one Ta(1) atom. is represented by the CIF card [CIF]
data_LaTaO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.632
_cell_length_b   7.632
_cell_length_c   5.646
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   149.990
_symmetry_Int_Tables_number   1
_cell_volume   164.451
_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
  La  La0  1  0.828  0.172  0.169  1.0
  La  La1  1  0.172  0.828  0.669  1.0
  Ta  Ta2  1  0.585  0.415  0.216  1.0
  Ta  Ta3  1  0.415  0.585  0.716  1.0
  O  O4  1  0.913  0.087  0.750  1.0
  O  O5  1  0.087  0.913  0.250  1.0
  O  O6  1  0.470  0.530  0.059  1.0
  O  O7  1  0.530  0.470  0.559  1.0
  O  O8  1  0.699  0.301  0.423  1.0
  O  O9  1  0.301  0.699  0.923  1.0
  O  O10  1  0.664  0.336  0.949  1.0
  O  O11  1  0.336  0.664  0.449  1.0
[/CIF]
.