The structure described by Eu2TlCl5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent Cl(2), two equivalent Cl(3), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Eu site, Eu(2) is bonded to one Cl(2), one Cl(3), one Cl(4), two equivalent Cl(1), and two equivalent Cl(5) atoms to form distorted edge-sharing EuCl7 pentagonal bipyramids. Tl(1) is bonded in a 1-coordinate geometry to two equivalent Cl(1) atoms. There are five inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 4-coordinate geometry to two equivalent Eu(2) and two equivalent Tl(1) atoms. In the second Cl site, Cl(2) is bonded in a distorted T-shaped geometry to one Eu(2) and two equivalent Eu(1) atoms. In the third Cl site, Cl(3) is bonded in a distorted trigonal non-coplanar geometry to one Eu(2) and two equivalent Eu(1) atoms. In the fourth Cl site, Cl(4) is bonded in a distorted trigonal non-coplanar geometry to one Eu(2) and two equivalent Eu(1) atoms. In the fifth Cl site, Cl(5) is bonded to two equivalent Eu(1) and two equivalent Eu(2) atoms to form a mixture of distorted corner and edge-sharing ClEu4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2TlCl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.820
_cell_length_b   8.915
_cell_length_c   12.590
_cell_angle_alpha   90.149
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   877.659
_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
  Eu  Eu0  1  0.475  0.999  0.822  1.0
  Eu  Eu1  1  0.525  0.001  0.178  1.0
  Eu  Eu2  1  0.975  0.001  0.678  1.0
  Eu  Eu3  1  0.025  0.999  0.322  1.0
  Eu  Eu4  1  0.429  0.751  0.506  1.0
  Eu  Eu5  1  0.571  0.249  0.494  1.0
  Eu  Eu6  1  0.929  0.249  0.994  1.0
  Eu  Eu7  1  0.071  0.751  0.006  1.0
  Tl  Tl8  1  0.459  0.491  0.833  1.0
  Tl  Tl9  1  0.541  0.509  0.167  1.0
  Tl  Tl10  1  0.959  0.509  0.667  1.0
  Tl  Tl11  1  0.041  0.491  0.333  1.0
  Cl  Cl12  1  0.335  0.464  0.590  1.0
  Cl  Cl13  1  0.665  0.536  0.410  1.0
  Cl  Cl14  1  0.835  0.536  0.910  1.0
  Cl  Cl15  1  0.165  0.464  0.090  1.0
  Cl  Cl16  1  0.668  0.788  0.682  1.0
  Cl  Cl17  1  0.332  0.212  0.318  1.0
  Cl  Cl18  1  0.168  0.212  0.818  1.0
  Cl  Cl19  1  0.832  0.788  0.182  1.0
  Cl  Cl20  1  0.192  0.775  0.783  1.0
  Cl  Cl21  1  0.808  0.225  0.217  1.0
  Cl  Cl22  1  0.692  0.225  0.717  1.0
  Cl  Cl23  1  0.308  0.775  0.283  1.0
  Cl  Cl24  1  0.048  0.787  0.503  1.0
  Cl  Cl25  1  0.952  0.213  0.497  1.0
  Cl  Cl26  1  0.548  0.213  0.997  1.0
  Cl  Cl27  1  0.452  0.787  0.003  1.0
  Cl  Cl28  1  0.839  0.960  0.900  1.0
  Cl  Cl29  1  0.161  0.040  0.100  1.0
  Cl  Cl30  1  0.339  0.040  0.600  1.0
  Cl  Cl31  1  0.661  0.960  0.400  1.0
[/CIF]
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The structure described by Eu2TlCl5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent Cl(2), two equivalent Cl(3), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Eu site, Eu(2) is bonded to one Cl(2), one Cl(3), one Cl(4), two equivalent Cl(1), and two equivalent Cl(5) atoms to form distorted edge-sharing EuCl7 pentagonal bipyramids. Tl(1) is bonded in a 1-coordinate geometry to two equivalent Cl(1) atoms. There are five inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 4-coordinate geometry to two equivalent Eu(2) and two equivalent Tl(1) atoms. In the second Cl site, Cl(2) is bonded in a distorted T-shaped geometry to one Eu(2) and two equivalent Eu(1) atoms. In the third Cl site, Cl(3) is bonded in a distorted trigonal non-coplanar geometry to one Eu(2) and two equivalent Eu(1) atoms. In the fourth Cl site, Cl(4) is bonded in a distorted trigonal non-coplanar geometry to one Eu(2) and two equivalent Eu(1) atoms. In the fifth Cl site, Cl(5) is bonded to two equivalent Eu(1) and two equivalent Eu(2) atoms to form a mixture of distorted corner and edge-sharing ClEu4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2TlCl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.820
_cell_length_b   8.915
_cell_length_c   12.590
_cell_angle_alpha   90.149
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   877.659
_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
  Eu  Eu0  1  0.475  0.999  0.822  1.0
  Eu  Eu1  1  0.525  0.001  0.178  1.0
  Eu  Eu2  1  0.975  0.001  0.678  1.0
  Eu  Eu3  1  0.025  0.999  0.322  1.0
  Eu  Eu4  1  0.429  0.751  0.506  1.0
  Eu  Eu5  1  0.571  0.249  0.494  1.0
  Eu  Eu6  1  0.929  0.249  0.994  1.0
  Eu  Eu7  1  0.071  0.751  0.006  1.0
  Tl  Tl8  1  0.459  0.491  0.833  1.0
  Tl  Tl9  1  0.541  0.509  0.167  1.0
  Tl  Tl10  1  0.959  0.509  0.667  1.0
  Tl  Tl11  1  0.041  0.491  0.333  1.0
  Cl  Cl12  1  0.335  0.464  0.590  1.0
  Cl  Cl13  1  0.665  0.536  0.410  1.0
  Cl  Cl14  1  0.835  0.536  0.910  1.0
  Cl  Cl15  1  0.165  0.464  0.090  1.0
  Cl  Cl16  1  0.668  0.788  0.682  1.0
  Cl  Cl17  1  0.332  0.212  0.318  1.0
  Cl  Cl18  1  0.168  0.212  0.818  1.0
  Cl  Cl19  1  0.832  0.788  0.182  1.0
  Cl  Cl20  1  0.192  0.775  0.783  1.0
  Cl  Cl21  1  0.808  0.225  0.217  1.0
  Cl  Cl22  1  0.692  0.225  0.717  1.0
  Cl  Cl23  1  0.308  0.775  0.283  1.0
  Cl  Cl24  1  0.048  0.787  0.503  1.0
  Cl  Cl25  1  0.952  0.213  0.497  1.0
  Cl  Cl26  1  0.548  0.213  0.997  1.0
  Cl  Cl27  1  0.452  0.787  0.003  1.0
  Cl  Cl28  1  0.839  0.960  0.900  1.0
  Cl  Cl29  1  0.161  0.040  0.100  1.0
  Cl  Cl30  1  0.339  0.040  0.600  1.0
  Cl  Cl31  1  0.661  0.960  0.400  1.0
[/CIF]
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