The crystal structure described by LiEr2Tl(WO4)4Tl crystallizes in the triclinic P1 space group. The structure consists of one 7440-28-0 atom inside a LiEr2Tl(WO4)4 framework. In the LiEr2Tl(WO4)4 framework, Li(1) is bonded in a 5-coordinate geometry to one Tl(2), one O(11), one O(2), one O(4), and one O(9) atom. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to one O(11), one O(13), one O(15), one O(5), one O(6), one O(8), and one O(9) atom to form distorted ErO7 pentagonal bipyramids that share  a cornercorner with one W(3)O6 octahedra, corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(4)O6 octahedra,  an edgeedge with one W(3)O6 octahedra, and  an edgeedge with one Er(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 24-60°. In the second Er site, Er(2) is bonded to one O(10), one O(12), one O(14), one O(16), one O(5), one O(6), and one O(7) atom to form distorted ErO7 pentagonal bipyramids that share  a cornercorner with one W(4)O6 octahedra, corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra,  an edgeedge with one W(4)O6 octahedra, and  an edgeedge with one Er(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 23-57°. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(10), one O(13), one O(4), one O(7), and one O(9) atom to form WO6 octahedra that share corners with two equivalent W(4)O6 octahedra, corners with two equivalent Er(1)O7 pentagonal bipyramids, corners with two equivalent Er(2)O7 pentagonal bipyramids, and  an edgeedge with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-43°. In the second W site, W(2) is bonded to one O(10), one O(14), one O(2), one O(3), one O(8), and one O(9) atom to form WO6 octahedra that share corners with two equivalent W(3)O6 octahedra, corners with two equivalent Er(1)O7 pentagonal bipyramids, corners with two equivalent Er(2)O7 pentagonal bipyramids, and  an edgeedge with one W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-43°. In the third W site, W(3) is bonded to one O(11), one O(12), one O(15), one O(2), one O(3), and one O(5) atom to form WO6 octahedra that share corners with two equivalent W(2)O6 octahedra,  a cornercorner with one Er(1)O7 pentagonal bipyramid, corners with two equivalent Er(2)O7 pentagonal bipyramids,  an edgeedge with one W(4)O6 octahedra, and  an edgeedge with one Er(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 39-43°. In the fourth W site, W(4) is bonded to one O(1), one O(11), one O(12), one O(16), one O(4), and one O(6) atom to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra,  a cornercorner with one Er(2)O7 pentagonal bipyramid, corners with two equivalent Er(1)O7 pentagonal bipyramids,  an edgeedge with one W(3)O6 octahedra, and  an edgeedge with one Er(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 39-43°. Tl(2) is bonded in a 7-coordinate geometry to one Li(1), one O(1), one O(13), one O(14), one O(15), one O(16), and one O(3) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one W(1), one W(4), and one Tl(2) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one W(2), and one W(3) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one W(2), one W(3), and one Tl(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one W(1), and one W(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Er(1), one Er(2), and one W(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Er(1), one Er(2), and one W(4) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Er(2) and one W(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Er(1) and one W(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal pyramidal geometry to one Li(1), one Er(1), one W(1), and one W(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Er(2), one W(1), and one W(2) atom. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Li(1), one Er(1), one W(3), and one W(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one Er(2), one W(3), and one W(4) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Er(1), one W(1), and one Tl(2) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 150 degrees geometry to one Er(2), one W(2), and one Tl(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Er(1), one W(3), and one Tl(2) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Er(2), one W(4), and one Tl(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiEr2Tl2(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.470
_cell_length_b   7.927
_cell_length_c   7.492
_cell_angle_alpha   62.627
_cell_angle_beta   63.004
_cell_angle_gamma   88.909
_symmetry_Int_Tables_number   1
_cell_volume   340.799
_cell_formula_units_Z   1
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  0.345  0.628  0.241  1.0
  Er  Er1  1  0.257  0.792  0.737  1.0
  Er  Er2  1  0.757  0.199  0.261  1.0
  Tl  Tl3  1  0.795  0.203  0.740  1.0
  Tl  Tl4  1  0.144  0.895  0.235  1.0
  W  W5  1  0.294  0.312  0.702  1.0
  W  W6  1  0.713  0.678  0.291  1.0
  W  W7  1  0.697  0.688  0.793  1.0
  W  W8  1  0.316  0.289  0.205  1.0
  O  O9  1  0.384  0.260  0.923  1.0
  O  O10  1  0.629  0.743  0.062  1.0
  O  O11  1  0.757  0.613  0.566  1.0
  O  O12  1  0.232  0.365  0.452  1.0
  O  O13  1  0.625  0.915  0.631  1.0
  O  O14  1  0.400  0.069  0.365  1.0
  O  O15  1  0.040  0.331  0.890  1.0
  O  O16  1  0.968  0.656  0.109  1.0
  O  O17  1  0.400  0.620  0.531  1.0
  O  O18  1  0.606  0.378  0.449  1.0
  O  O19  1  0.371  0.587  0.978  1.0
  O  O20  1  0.643  0.413  0.030  1.0
  O  O21  1  0.245  0.049  0.791  1.0
  O  O22  1  0.778  0.936  0.210  1.0
  O  O23  1  0.970  0.772  0.697  1.0
  O  O24  1  0.031  0.210  0.307  1.0
[/CIF]
.
The crystal structure described by LiEr2Tl(WO4)4Tl crystallizes in the triclinic P1 space group. The structure consists of one 7440-28-0 atom inside a LiEr2Tl(WO4)4 framework. In the LiEr2Tl(WO4)4 framework, Li(1) is bonded in a 5-coordinate geometry to one Tl(2), one O(11), one O(2), one O(4), and one O(9) atom. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to one O(11), one O(13), one O(15), one O(5), one O(6), one O(8), and one O(9) atom to form distorted ErO7 pentagonal bipyramids that share  a cornercorner with one W(3)O6 octahedra, corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(4)O6 octahedra,  an edgeedge with one W(3)O6 octahedra, and  an edgeedge with one Er(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 24-60°. In the second Er site, Er(2) is bonded to one O(10), one O(12), one O(14), one O(16), one O(5), one O(6), and one O(7) atom to form distorted ErO7 pentagonal bipyramids that share  a cornercorner with one W(4)O6 octahedra, corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra,  an edgeedge with one W(4)O6 octahedra, and  an edgeedge with one Er(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 23-57°. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(10), one O(13), one O(4), one O(7), and one O(9) atom to form WO6 octahedra that share corners with two equivalent W(4)O6 octahedra, corners with two equivalent Er(1)O7 pentagonal bipyramids, corners with two equivalent Er(2)O7 pentagonal bipyramids, and  an edgeedge with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-43°. In the second W site, W(2) is bonded to one O(10), one O(14), one O(2), one O(3), one O(8), and one O(9) atom to form WO6 octahedra that share corners with two equivalent W(3)O6 octahedra, corners with two equivalent Er(1)O7 pentagonal bipyramids, corners with two equivalent Er(2)O7 pentagonal bipyramids, and  an edgeedge with one W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-43°. In the third W site, W(3) is bonded to one O(11), one O(12), one O(15), one O(2), one O(3), and one O(5) atom to form WO6 octahedra that share corners with two equivalent W(2)O6 octahedra,  a cornercorner with one Er(1)O7 pentagonal bipyramid, corners with two equivalent Er(2)O7 pentagonal bipyramids,  an edgeedge with one W(4)O6 octahedra, and  an edgeedge with one Er(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 39-43°. In the fourth W site, W(4) is bonded to one O(1), one O(11), one O(12), one O(16), one O(4), and one O(6) atom to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra,  a cornercorner with one Er(2)O7 pentagonal bipyramid, corners with two equivalent Er(1)O7 pentagonal bipyramids,  an edgeedge with one W(3)O6 octahedra, and  an edgeedge with one Er(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 39-43°. Tl(2) is bonded in a 7-coordinate geometry to one Li(1), one O(1), one O(13), one O(14), one O(15), one O(16), and one O(3) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one W(1), one W(4), and one Tl(2) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one W(2), and one W(3) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one W(2), one W(3), and one Tl(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one W(1), and one W(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Er(1), one Er(2), and one W(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Er(1), one Er(2), and one W(4) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Er(2) and one W(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Er(1) and one W(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal pyramidal geometry to one Li(1), one Er(1), one W(1), and one W(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Er(2), one W(1), and one W(2) atom. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Li(1), one Er(1), one W(3), and one W(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one Er(2), one W(3), and one W(4) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Er(1), one W(1), and one Tl(2) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 150 degrees geometry to one Er(2), one W(2), and one Tl(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Er(1), one W(3), and one Tl(2) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Er(2), one W(4), and one Tl(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiEr2Tl2(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.470
_cell_length_b   7.927
_cell_length_c   7.492
_cell_angle_alpha   62.627
_cell_angle_beta   63.004
_cell_angle_gamma   88.909
_symmetry_Int_Tables_number   1
_cell_volume   340.799
_cell_formula_units_Z   1
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  0.345  0.628  0.241  1.0
  Er  Er1  1  0.257  0.792  0.737  1.0
  Er  Er2  1  0.757  0.199  0.261  1.0
  Tl  Tl3  1  0.795  0.203  0.740  1.0
  Tl  Tl4  1  0.144  0.895  0.235  1.0
  W  W5  1  0.294  0.312  0.702  1.0
  W  W6  1  0.713  0.678  0.291  1.0
  W  W7  1  0.697  0.688  0.793  1.0
  W  W8  1  0.316  0.289  0.205  1.0
  O  O9  1  0.384  0.260  0.923  1.0
  O  O10  1  0.629  0.743  0.062  1.0
  O  O11  1  0.757  0.613  0.566  1.0
  O  O12  1  0.232  0.365  0.452  1.0
  O  O13  1  0.625  0.915  0.631  1.0
  O  O14  1  0.400  0.069  0.365  1.0
  O  O15  1  0.040  0.331  0.890  1.0
  O  O16  1  0.968  0.656  0.109  1.0
  O  O17  1  0.400  0.620  0.531  1.0
  O  O18  1  0.606  0.378  0.449  1.0
  O  O19  1  0.371  0.587  0.978  1.0
  O  O20  1  0.643  0.413  0.030  1.0
  O  O21  1  0.245  0.049  0.791  1.0
  O  O22  1  0.778  0.936  0.210  1.0
  O  O23  1  0.970  0.772  0.697  1.0
  O  O24  1  0.031  0.210  0.307  1.0
[/CIF]
.