The material structure described by Ba2GdCl7 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(5), one Cl(6), two equivalent Cl(4), and two equivalent Cl(7) atoms. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(7), two equivalent Cl(5), and two equivalent Cl(6) atoms. Gd(1) is bonded in a distorted pentagonal bipyramidal geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded to one Ba(1), two equivalent Ba(2), and one Gd(1) atom to form a mixture of corner and edge-sharing ClBa3Gd tetrahedra. In the second Cl site, Cl(7) is bonded to one Ba(2), two equivalent Ba(1), and one Gd(1) atom to form a mixture of corner and edge-sharing ClBa3Gd tetrahedra. In the third Cl site, Cl(1) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Gd(1) atom. In the fourth Cl site, Cl(2) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Gd(1) atom. In the fifth Cl site, Cl(3) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Gd(1) atom. In the sixth Cl site, Cl(4) is bonded to one Ba(2), two equivalent Ba(1), and one Gd(1) atom to form a mixture of corner and edge-sharing ClBa3Gd tetrahedra. In the seventh Cl site, Cl(5) is bonded to one Ba(1), two equivalent Ba(2), and one Gd(1) atom to form a mixture of corner and edge-sharing ClBa3Gd tetrahedra. is represented by the CIF file [CIF]
data_Ba2GdCl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.671
_cell_length_b   6.894
_cell_length_c   10.633
_cell_angle_alpha   89.338
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1148.706
_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
  Ba  Ba0  1  0.061  0.266  0.824  1.0
  Ba  Ba1  1  0.561  0.734  0.676  1.0
  Ba  Ba2  1  0.939  0.734  0.176  1.0
  Ba  Ba3  1  0.439  0.266  0.324  1.0
  Ba  Ba4  1  0.279  0.734  0.050  1.0
  Ba  Ba5  1  0.779  0.266  0.450  1.0
  Ba  Ba6  1  0.721  0.266  0.950  1.0
  Ba  Ba7  1  0.221  0.734  0.550  1.0
  Gd  Gd8  1  0.128  0.218  0.282  1.0
  Gd  Gd9  1  0.628  0.782  0.218  1.0
  Gd  Gd10  1  0.872  0.782  0.718  1.0
  Gd  Gd11  1  0.372  0.218  0.782  1.0
  Cl  Cl12  1  0.141  0.290  0.532  1.0
  Cl  Cl13  1  0.641  0.710  0.968  1.0
  Cl  Cl14  1  0.859  0.710  0.468  1.0
  Cl  Cl15  1  0.359  0.290  0.032  1.0
  Cl  Cl16  1  0.071  0.868  0.377  1.0
  Cl  Cl17  1  0.571  0.132  0.123  1.0
  Cl  Cl18  1  0.929  0.132  0.623  1.0
  Cl  Cl19  1  0.429  0.868  0.877  1.0
  Cl  Cl20  1  0.959  0.300  0.290  1.0
  Cl  Cl21  1  0.459  0.700  0.210  1.0
  Cl  Cl22  1  0.041  0.700  0.710  1.0
  Cl  Cl23  1  0.541  0.300  0.790  1.0
  Cl  Cl24  1  0.396  0.998  0.570  1.0
  Cl  Cl25  1  0.896  0.002  0.930  1.0
  Cl  Cl26  1  0.604  0.002  0.430  1.0
  Cl  Cl27  1  0.104  0.998  0.070  1.0
  Cl  Cl28  1  0.242  0.490  0.803  1.0
  Cl  Cl29  1  0.742  0.510  0.697  1.0
  Cl  Cl30  1  0.758  0.510  0.197  1.0
  Cl  Cl31  1  0.258  0.490  0.303  1.0
  Cl  Cl32  1  0.226  0.998  0.795  1.0
  Cl  Cl33  1  0.726  0.002  0.705  1.0
  Cl  Cl34  1  0.774  0.002  0.205  1.0
  Cl  Cl35  1  0.274  0.998  0.295  1.0
  Cl  Cl36  1  0.395  0.488  0.584  1.0
  Cl  Cl37  1  0.895  0.512  0.916  1.0
  Cl  Cl38  1  0.605  0.512  0.416  1.0
  Cl  Cl39  1  0.105  0.488  0.084  1.0
[/CIF]
.
The material structure described by Ba2GdCl7 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(5), one Cl(6), two equivalent Cl(4), and two equivalent Cl(7) atoms. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(7), two equivalent Cl(5), and two equivalent Cl(6) atoms. Gd(1) is bonded in a distorted pentagonal bipyramidal geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom. There are seven inequivalent Cl sites. In the first Cl site, Cl(6) is bonded to one Ba(1), two equivalent Ba(2), and one Gd(1) atom to form a mixture of corner and edge-sharing ClBa3Gd tetrahedra. In the second Cl site, Cl(7) is bonded to one Ba(2), two equivalent Ba(1), and one Gd(1) atom to form a mixture of corner and edge-sharing ClBa3Gd tetrahedra. In the third Cl site, Cl(1) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Gd(1) atom. In the fourth Cl site, Cl(2) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Gd(1) atom. In the fifth Cl site, Cl(3) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Gd(1) atom. In the sixth Cl site, Cl(4) is bonded to one Ba(2), two equivalent Ba(1), and one Gd(1) atom to form a mixture of corner and edge-sharing ClBa3Gd tetrahedra. In the seventh Cl site, Cl(5) is bonded to one Ba(1), two equivalent Ba(2), and one Gd(1) atom to form a mixture of corner and edge-sharing ClBa3Gd tetrahedra. is represented by the CIF file [CIF]
data_Ba2GdCl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.671
_cell_length_b   6.894
_cell_length_c   10.633
_cell_angle_alpha   89.338
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1148.706
_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
  Ba  Ba0  1  0.061  0.266  0.824  1.0
  Ba  Ba1  1  0.561  0.734  0.676  1.0
  Ba  Ba2  1  0.939  0.734  0.176  1.0
  Ba  Ba3  1  0.439  0.266  0.324  1.0
  Ba  Ba4  1  0.279  0.734  0.050  1.0
  Ba  Ba5  1  0.779  0.266  0.450  1.0
  Ba  Ba6  1  0.721  0.266  0.950  1.0
  Ba  Ba7  1  0.221  0.734  0.550  1.0
  Gd  Gd8  1  0.128  0.218  0.282  1.0
  Gd  Gd9  1  0.628  0.782  0.218  1.0
  Gd  Gd10  1  0.872  0.782  0.718  1.0
  Gd  Gd11  1  0.372  0.218  0.782  1.0
  Cl  Cl12  1  0.141  0.290  0.532  1.0
  Cl  Cl13  1  0.641  0.710  0.968  1.0
  Cl  Cl14  1  0.859  0.710  0.468  1.0
  Cl  Cl15  1  0.359  0.290  0.032  1.0
  Cl  Cl16  1  0.071  0.868  0.377  1.0
  Cl  Cl17  1  0.571  0.132  0.123  1.0
  Cl  Cl18  1  0.929  0.132  0.623  1.0
  Cl  Cl19  1  0.429  0.868  0.877  1.0
  Cl  Cl20  1  0.959  0.300  0.290  1.0
  Cl  Cl21  1  0.459  0.700  0.210  1.0
  Cl  Cl22  1  0.041  0.700  0.710  1.0
  Cl  Cl23  1  0.541  0.300  0.790  1.0
  Cl  Cl24  1  0.396  0.998  0.570  1.0
  Cl  Cl25  1  0.896  0.002  0.930  1.0
  Cl  Cl26  1  0.604  0.002  0.430  1.0
  Cl  Cl27  1  0.104  0.998  0.070  1.0
  Cl  Cl28  1  0.242  0.490  0.803  1.0
  Cl  Cl29  1  0.742  0.510  0.697  1.0
  Cl  Cl30  1  0.758  0.510  0.197  1.0
  Cl  Cl31  1  0.258  0.490  0.303  1.0
  Cl  Cl32  1  0.226  0.998  0.795  1.0
  Cl  Cl33  1  0.726  0.002  0.705  1.0
  Cl  Cl34  1  0.774  0.002  0.205  1.0
  Cl  Cl35  1  0.274  0.998  0.295  1.0
  Cl  Cl36  1  0.395  0.488  0.584  1.0
  Cl  Cl37  1  0.895  0.512  0.916  1.0
  Cl  Cl38  1  0.605  0.512  0.416  1.0
  Cl  Cl39  1  0.105  0.488  0.084  1.0
[/CIF]
.