The compound described by LaTaON2 crystallizes in the monoclinic C2/m space group. La(1) is bonded in a 6-coordinate geometry to two equivalent N(2), four equivalent N(1), and two equivalent O(1) atoms. Ta(1) is bonded to two equivalent N(1), two equivalent N(2), and two equivalent O(1) atoms to form corner-sharing TaN4O2 octahedra. The corner-sharing octahedral tilt angles range from 8-28°. There are two inequivalent N sites. In the first N site, N(1) is bonded to four equivalent La(1) and two equivalent Ta(1) atoms to form a mixture of distorted corner and edge-sharing NLa4Ta2 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the second N site, N(2) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Ta(1) atoms. O(1) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Ta(1) atoms. is represented by the CIF file [CIF]
data_LaTaN2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.670
_cell_length_b   5.670
_cell_length_c   5.735
_cell_angle_alpha   60.999
_cell_angle_beta   60.999
_cell_angle_gamma   90.742
_symmetry_Int_Tables_number   1
_cell_volume   133.423
_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  0.250  0.250  0.493  1.0
  La  La1  1  0.750  0.750  0.507  1.0
  Ta  Ta2  1  0.500  0.000  0.000  1.0
  Ta  Ta3  1  0.000  0.500  0.000  1.0
  N  N4  1  0.769  0.231  0.500  1.0
  N  N5  1  0.326  0.326  0.969  1.0
  N  N6  1  0.231  0.769  0.500  1.0
  N  N7  1  0.674  0.674  0.031  1.0
  O  O8  1  0.189  0.811  0.000  1.0
  O  O9  1  0.811  0.189  0.000  1.0
[/CIF]
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The compound described by LaTaON2 crystallizes in the monoclinic C2/m space group. La(1) is bonded in a 6-coordinate geometry to two equivalent N(2), four equivalent N(1), and two equivalent O(1) atoms. Ta(1) is bonded to two equivalent N(1), two equivalent N(2), and two equivalent O(1) atoms to form corner-sharing TaN4O2 octahedra. The corner-sharing octahedral tilt angles range from 8-28°. There are two inequivalent N sites. In the first N site, N(1) is bonded to four equivalent La(1) and two equivalent Ta(1) atoms to form a mixture of distorted corner and edge-sharing NLa4Ta2 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the second N site, N(2) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Ta(1) atoms. O(1) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Ta(1) atoms. is represented by the CIF file [CIF]
data_LaTaN2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.670
_cell_length_b   5.670
_cell_length_c   5.735
_cell_angle_alpha   60.999
_cell_angle_beta   60.999
_cell_angle_gamma   90.742
_symmetry_Int_Tables_number   1
_cell_volume   133.423
_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  0.250  0.250  0.493  1.0
  La  La1  1  0.750  0.750  0.507  1.0
  Ta  Ta2  1  0.500  0.000  0.000  1.0
  Ta  Ta3  1  0.000  0.500  0.000  1.0
  N  N4  1  0.769  0.231  0.500  1.0
  N  N5  1  0.326  0.326  0.969  1.0
  N  N6  1  0.231  0.769  0.500  1.0
  N  N7  1  0.674  0.674  0.031  1.0
  O  O8  1  0.189  0.811  0.000  1.0
  O  O9  1  0.811  0.189  0.000  1.0
[/CIF]
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