The structure described by MgEr2Tl(WO4)4Tl crystallizes in the monoclinic C2 space group. The structure consists of two 7440-28-0 atoms inside a MgEr2Tl(WO4)4 framework. In the MgEr2Tl(WO4)4 framework, Mg(1) is bonded in a 4-coordinate geometry to one Tl(1), two equivalent O(1), and two equivalent O(6) atoms. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 6-coordinate geometry to two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms. In the second Er site, Er(2) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(6), and two equivalent O(8) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form a mixture of distorted corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 37-47°. In the second W site, W(2) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 37-47°. Tl(1) is bonded in a 7-coordinate geometry to one Mg(1), two equivalent O(2), two equivalent O(7), and two equivalent O(8) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one W(1), and one W(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one W(1), one W(2), and one Tl(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Er(2) and one W(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Er(1) and one W(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Er(1), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Er(2), one W(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a T-shaped geometry to one Er(1), one W(1), and one Tl(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Er(2), one W(2), and one Tl(1) atom. is represented by the CIF file [CIF]
data_Er2MgTl2(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.691
_cell_length_b   7.691
_cell_length_c   7.510
_cell_angle_alpha   63.066
_cell_angle_beta   63.066
_cell_angle_gamma   88.799
_symmetry_Int_Tables_number   1
_cell_volume   343.528
_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
  Er  Er0  1  0.215  0.785  0.750  1.0
  Er  Er1  1  0.761  0.239  0.250  1.0
  Mg  Mg2  1  0.652  0.348  0.750  1.0
  Tl  Tl3  1  0.900  0.100  0.750  1.0
  Tl  Tl4  1  0.196  0.804  0.250  1.0
  W  W5  1  0.276  0.331  0.704  1.0
  W  W6  1  0.692  0.701  0.297  1.0
  W  W7  1  0.669  0.724  0.796  1.0
  W  W8  1  0.299  0.308  0.203  1.0
  O  O9  1  0.363  0.242  0.949  1.0
  O  O10  1  0.606  0.749  0.078  1.0
  O  O11  1  0.758  0.637  0.551  1.0
  O  O12  1  0.251  0.394  0.422  1.0
  O  O13  1  0.613  0.954  0.621  1.0
  O  O14  1  0.351  0.072  0.374  1.0
  O  O15  1  0.046  0.387  0.879  1.0
  O  O16  1  0.928  0.649  0.126  1.0
  O  O17  1  0.404  0.645  0.535  1.0
  O  O18  1  0.591  0.376  0.486  1.0
  O  O19  1  0.355  0.596  0.965  1.0
  O  O20  1  0.624  0.409  0.014  1.0
  O  O21  1  0.199  0.050  0.800  1.0
  O  O22  1  0.762  0.969  0.201  1.0
  O  O23  1  0.950  0.801  0.700  1.0
  O  O24  1  0.031  0.238  0.299  1.0
[/CIF]
.
The structure described by MgEr2Tl(WO4)4Tl crystallizes in the monoclinic C2 space group. The structure consists of two 7440-28-0 atoms inside a MgEr2Tl(WO4)4 framework. In the MgEr2Tl(WO4)4 framework, Mg(1) is bonded in a 4-coordinate geometry to one Tl(1), two equivalent O(1), and two equivalent O(6) atoms. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 6-coordinate geometry to two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms. In the second Er site, Er(2) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(6), and two equivalent O(8) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form a mixture of distorted corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 37-47°. In the second W site, W(2) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 37-47°. Tl(1) is bonded in a 7-coordinate geometry to one Mg(1), two equivalent O(2), two equivalent O(7), and two equivalent O(8) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one W(1), and one W(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one W(1), one W(2), and one Tl(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Er(2) and one W(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Er(1) and one W(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Er(1), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Er(2), one W(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a T-shaped geometry to one Er(1), one W(1), and one Tl(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Er(2), one W(2), and one Tl(1) atom. is represented by the CIF file [CIF]
data_Er2MgTl2(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.691
_cell_length_b   7.691
_cell_length_c   7.510
_cell_angle_alpha   63.066
_cell_angle_beta   63.066
_cell_angle_gamma   88.799
_symmetry_Int_Tables_number   1
_cell_volume   343.528
_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
  Er  Er0  1  0.215  0.785  0.750  1.0
  Er  Er1  1  0.761  0.239  0.250  1.0
  Mg  Mg2  1  0.652  0.348  0.750  1.0
  Tl  Tl3  1  0.900  0.100  0.750  1.0
  Tl  Tl4  1  0.196  0.804  0.250  1.0
  W  W5  1  0.276  0.331  0.704  1.0
  W  W6  1  0.692  0.701  0.297  1.0
  W  W7  1  0.669  0.724  0.796  1.0
  W  W8  1  0.299  0.308  0.203  1.0
  O  O9  1  0.363  0.242  0.949  1.0
  O  O10  1  0.606  0.749  0.078  1.0
  O  O11  1  0.758  0.637  0.551  1.0
  O  O12  1  0.251  0.394  0.422  1.0
  O  O13  1  0.613  0.954  0.621  1.0
  O  O14  1  0.351  0.072  0.374  1.0
  O  O15  1  0.046  0.387  0.879  1.0
  O  O16  1  0.928  0.649  0.126  1.0
  O  O17  1  0.404  0.645  0.535  1.0
  O  O18  1  0.591  0.376  0.486  1.0
  O  O19  1  0.355  0.596  0.965  1.0
  O  O20  1  0.624  0.409  0.014  1.0
  O  O21  1  0.199  0.050  0.800  1.0
  O  O22  1  0.762  0.969  0.201  1.0
  O  O23  1  0.950  0.801  0.700  1.0
  O  O24  1  0.031  0.238  0.299  1.0
[/CIF]
.