The material described by Li2Th(AsO4)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to two equivalent O(4) and two equivalent O(8) atoms. In the second Li site, Li(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(6), one O(7), and one O(8) atom. Th(1) is bonded in a 9-coordinate geometry to one O(2), one O(5), one O(7), two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a tetrahedral geometry to one O(2), one O(3), one O(5), and one O(8) atom. In the second As site, As(2) is bonded in a tetrahedral geometry to one O(1), one O(4), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(4) is bonded in a trigonal planar geometry to two equivalent Li(1) and one As(2) atom. In the second O site, O(5) is bonded in a water-like geometry to one Th(1) and one As(1) atom. In the third O site, O(6) is bonded in a 4-coordinate geometry to one Li(2), two equivalent Th(1), and one As(2) atom. In the fourth O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Li(2), one Th(1), and one As(2) atom. In the fifth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), two equivalent Li(1), and one As(1) atom. In the sixth O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Th(1) and one As(2) atom. In the seventh O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(2), one Th(1), and one As(1) atom. In the eighth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Th(1) and one As(1) atom. is represented by the CIF file [CIF]
data_Li2Th(AsO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.042
_cell_length_b   5.696
_cell_length_c   9.234
_cell_angle_alpha   73.784
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   709.133
_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
  Li  Li0  1  0.251  0.086  0.104  1.0
  Li  Li1  1  0.751  0.414  0.896  1.0
  Li  Li2  1  0.749  0.914  0.896  1.0
  Li  Li3  1  0.249  0.586  0.104  1.0
  Li  Li4  1  0.436  0.790  0.228  1.0
  Li  Li5  1  0.936  0.710  0.772  1.0
  Li  Li6  1  0.564  0.210  0.772  1.0
  Li  Li7  1  0.064  0.290  0.228  1.0
  Th  Th8  1  0.364  0.566  0.619  1.0
  Th  Th9  1  0.864  0.934  0.381  1.0
  Th  Th10  1  0.636  0.434  0.381  1.0
  Th  Th11  1  0.136  0.066  0.619  1.0
  As  As12  1  0.374  0.906  0.854  1.0
  As  As13  1  0.874  0.594  0.146  1.0
  As  As14  1  0.626  0.094  0.146  1.0
  As  As15  1  0.126  0.406  0.854  1.0
  As  As16  1  0.367  0.228  0.370  1.0
  As  As17  1  0.867  0.272  0.630  1.0
  As  As18  1  0.633  0.772  0.630  1.0
  As  As19  1  0.133  0.728  0.370  1.0
  O  O20  1  0.285  0.276  0.501  1.0
  O  O21  1  0.785  0.224  0.499  1.0
  O  O22  1  0.715  0.724  0.499  1.0
  O  O23  1  0.215  0.776  0.501  1.0
  O  O24  1  0.424  0.189  0.777  1.0
  O  O25  1  0.924  0.311  0.223  1.0
  O  O26  1  0.576  0.811  0.223  1.0
  O  O27  1  0.076  0.689  0.777  1.0
  O  O28  1  0.273  0.854  0.757  1.0
  O  O29  1  0.773  0.646  0.243  1.0
  O  O30  1  0.727  0.146  0.243  1.0
  O  O31  1  0.227  0.354  0.757  1.0
  O  O32  1  0.320  0.296  0.196  1.0
  O  O33  1  0.820  0.204  0.804  1.0
  O  O34  1  0.680  0.704  0.804  1.0
  O  O35  1  0.180  0.796  0.196  1.0
  O  O36  1  0.445  0.690  0.811  1.0
  O  O37  1  0.945  0.810  0.189  1.0
  O  O38  1  0.555  0.310  0.189  1.0
  O  O39  1  0.055  0.190  0.811  1.0
  O  O40  1  0.446  0.453  0.394  1.0
  O  O41  1  0.946  0.047  0.606  1.0
  O  O42  1  0.554  0.547  0.606  1.0
  O  O43  1  0.054  0.953  0.394  1.0
  O  O44  1  0.408  0.932  0.421  1.0
  O  O45  1  0.908  0.568  0.579  1.0
  O  O46  1  0.592  0.068  0.579  1.0
  O  O47  1  0.092  0.432  0.421  1.0
  O  O48  1  0.348  0.861  0.040  1.0
  O  O49  1  0.848  0.639  0.960  1.0
  O  O50  1  0.652  0.139  0.960  1.0
  O  O51  1  0.152  0.361  0.040  1.0
[/CIF]
.
The material described by Li2Th(AsO4)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to two equivalent O(4) and two equivalent O(8) atoms. In the second Li site, Li(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(6), one O(7), and one O(8) atom. Th(1) is bonded in a 9-coordinate geometry to one O(2), one O(5), one O(7), two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a tetrahedral geometry to one O(2), one O(3), one O(5), and one O(8) atom. In the second As site, As(2) is bonded in a tetrahedral geometry to one O(1), one O(4), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(4) is bonded in a trigonal planar geometry to two equivalent Li(1) and one As(2) atom. In the second O site, O(5) is bonded in a water-like geometry to one Th(1) and one As(1) atom. In the third O site, O(6) is bonded in a 4-coordinate geometry to one Li(2), two equivalent Th(1), and one As(2) atom. In the fourth O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Li(2), one Th(1), and one As(2) atom. In the fifth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), two equivalent Li(1), and one As(1) atom. In the sixth O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Th(1) and one As(2) atom. In the seventh O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(2), one Th(1), and one As(1) atom. In the eighth O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Th(1) and one As(1) atom. is represented by the CIF file [CIF]
data_Li2Th(AsO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.042
_cell_length_b   5.696
_cell_length_c   9.234
_cell_angle_alpha   73.784
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   709.133
_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
  Li  Li0  1  0.251  0.086  0.104  1.0
  Li  Li1  1  0.751  0.414  0.896  1.0
  Li  Li2  1  0.749  0.914  0.896  1.0
  Li  Li3  1  0.249  0.586  0.104  1.0
  Li  Li4  1  0.436  0.790  0.228  1.0
  Li  Li5  1  0.936  0.710  0.772  1.0
  Li  Li6  1  0.564  0.210  0.772  1.0
  Li  Li7  1  0.064  0.290  0.228  1.0
  Th  Th8  1  0.364  0.566  0.619  1.0
  Th  Th9  1  0.864  0.934  0.381  1.0
  Th  Th10  1  0.636  0.434  0.381  1.0
  Th  Th11  1  0.136  0.066  0.619  1.0
  As  As12  1  0.374  0.906  0.854  1.0
  As  As13  1  0.874  0.594  0.146  1.0
  As  As14  1  0.626  0.094  0.146  1.0
  As  As15  1  0.126  0.406  0.854  1.0
  As  As16  1  0.367  0.228  0.370  1.0
  As  As17  1  0.867  0.272  0.630  1.0
  As  As18  1  0.633  0.772  0.630  1.0
  As  As19  1  0.133  0.728  0.370  1.0
  O  O20  1  0.285  0.276  0.501  1.0
  O  O21  1  0.785  0.224  0.499  1.0
  O  O22  1  0.715  0.724  0.499  1.0
  O  O23  1  0.215  0.776  0.501  1.0
  O  O24  1  0.424  0.189  0.777  1.0
  O  O25  1  0.924  0.311  0.223  1.0
  O  O26  1  0.576  0.811  0.223  1.0
  O  O27  1  0.076  0.689  0.777  1.0
  O  O28  1  0.273  0.854  0.757  1.0
  O  O29  1  0.773  0.646  0.243  1.0
  O  O30  1  0.727  0.146  0.243  1.0
  O  O31  1  0.227  0.354  0.757  1.0
  O  O32  1  0.320  0.296  0.196  1.0
  O  O33  1  0.820  0.204  0.804  1.0
  O  O34  1  0.680  0.704  0.804  1.0
  O  O35  1  0.180  0.796  0.196  1.0
  O  O36  1  0.445  0.690  0.811  1.0
  O  O37  1  0.945  0.810  0.189  1.0
  O  O38  1  0.555  0.310  0.189  1.0
  O  O39  1  0.055  0.190  0.811  1.0
  O  O40  1  0.446  0.453  0.394  1.0
  O  O41  1  0.946  0.047  0.606  1.0
  O  O42  1  0.554  0.547  0.606  1.0
  O  O43  1  0.054  0.953  0.394  1.0
  O  O44  1  0.408  0.932  0.421  1.0
  O  O45  1  0.908  0.568  0.579  1.0
  O  O46  1  0.592  0.068  0.579  1.0
  O  O47  1  0.092  0.432  0.421  1.0
  O  O48  1  0.348  0.861  0.040  1.0
  O  O49  1  0.848  0.639  0.960  1.0
  O  O50  1  0.652  0.139  0.960  1.0
  O  O51  1  0.152  0.361  0.040  1.0
[/CIF]
.