The crystal structure described by La(SeO4)3 crystallizes in the hexagonal P6_3/m space group. La(1) is bonded in a 9-coordinate geometry to three equivalent O(1) and six equivalent O(3) atoms. Se(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one La(1) and one Se(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Se(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one La(1) and one Se(1) atom. is represented by the CIF file [CIF]
data_La(SeO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.852
_cell_length_b   9.852
_cell_length_c   6.344
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   533.182
_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  0.667  0.333  0.750  1.0
  La  La1  1  0.333  0.667  0.250  1.0
  Se  Se2  1  0.610  0.702  0.750  1.0
  Se  Se3  1  0.390  0.298  0.250  1.0
  Se  Se4  1  0.092  0.390  0.750  1.0
  Se  Se5  1  0.908  0.610  0.250  1.0
  Se  Se6  1  0.298  0.908  0.750  1.0
  Se  Se7  1  0.702  0.092  0.250  1.0
  O  O8  1  0.962  0.452  0.750  1.0
  O  O9  1  0.038  0.548  0.250  1.0
  O  O10  1  0.489  0.038  0.750  1.0
  O  O11  1  0.511  0.962  0.250  1.0
  O  O12  1  0.548  0.511  0.750  1.0
  O  O13  1  0.452  0.489  0.250  1.0
  O  O14  1  0.805  0.815  0.750  1.0
  O  O15  1  0.195  0.185  0.250  1.0
  O  O16  1  0.011  0.195  0.750  1.0
  O  O17  1  0.989  0.805  0.250  1.0
  O  O18  1  0.185  0.989  0.750  1.0
  O  O19  1  0.815  0.011  0.250  1.0
  O  O20  1  0.543  0.751  0.963  1.0
  O  O21  1  0.457  0.249  0.037  1.0
  O  O22  1  0.208  0.457  0.963  1.0
  O  O23  1  0.457  0.249  0.463  1.0
  O  O24  1  0.792  0.543  0.037  1.0
  O  O25  1  0.543  0.751  0.537  1.0
  O  O26  1  0.249  0.792  0.963  1.0
  O  O27  1  0.792  0.543  0.463  1.0
  O  O28  1  0.751  0.208  0.037  1.0
  O  O29  1  0.208  0.457  0.537  1.0
  O  O30  1  0.751  0.208  0.463  1.0
  O  O31  1  0.249  0.792  0.537  1.0
[/CIF]
.
The crystal structure described by La(SeO4)3 crystallizes in the hexagonal P6_3/m space group. La(1) is bonded in a 9-coordinate geometry to three equivalent O(1) and six equivalent O(3) atoms. Se(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one La(1) and one Se(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Se(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one La(1) and one Se(1) atom. is represented by the CIF file [CIF]
data_La(SeO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.852
_cell_length_b   9.852
_cell_length_c   6.344
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   533.182
_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  0.667  0.333  0.750  1.0
  La  La1  1  0.333  0.667  0.250  1.0
  Se  Se2  1  0.610  0.702  0.750  1.0
  Se  Se3  1  0.390  0.298  0.250  1.0
  Se  Se4  1  0.092  0.390  0.750  1.0
  Se  Se5  1  0.908  0.610  0.250  1.0
  Se  Se6  1  0.298  0.908  0.750  1.0
  Se  Se7  1  0.702  0.092  0.250  1.0
  O  O8  1  0.962  0.452  0.750  1.0
  O  O9  1  0.038  0.548  0.250  1.0
  O  O10  1  0.489  0.038  0.750  1.0
  O  O11  1  0.511  0.962  0.250  1.0
  O  O12  1  0.548  0.511  0.750  1.0
  O  O13  1  0.452  0.489  0.250  1.0
  O  O14  1  0.805  0.815  0.750  1.0
  O  O15  1  0.195  0.185  0.250  1.0
  O  O16  1  0.011  0.195  0.750  1.0
  O  O17  1  0.989  0.805  0.250  1.0
  O  O18  1  0.185  0.989  0.750  1.0
  O  O19  1  0.815  0.011  0.250  1.0
  O  O20  1  0.543  0.751  0.963  1.0
  O  O21  1  0.457  0.249  0.037  1.0
  O  O22  1  0.208  0.457  0.963  1.0
  O  O23  1  0.457  0.249  0.463  1.0
  O  O24  1  0.792  0.543  0.037  1.0
  O  O25  1  0.543  0.751  0.537  1.0
  O  O26  1  0.249  0.792  0.963  1.0
  O  O27  1  0.792  0.543  0.463  1.0
  O  O28  1  0.751  0.208  0.037  1.0
  O  O29  1  0.208  0.457  0.537  1.0
  O  O30  1  0.751  0.208  0.463  1.0
  O  O31  1  0.249  0.792  0.537  1.0
[/CIF]
.