The compound described by Ba2YCl7 crystallizes in the monoclinic C2/c space group. Ba(1) is bonded in a 9-coordinate geometry to one Cl(4), two equivalent Cl(2), three equivalent Cl(1), and three equivalent Cl(3) atoms. Y(1) is bonded in a 9-coordinate geometry to one Cl(4), two equivalent Cl(1), two equivalent Cl(3), and four equivalent Cl(2) atoms. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to three equivalent Ba(1) and one Y(1) atom to form a mixture of distorted edge and corner-sharing ClBa3Y tetrahedra. In the second Cl site, Cl(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent Y(1) atoms. In the third Cl site, Cl(3) is bonded in a 4-coordinate geometry to three equivalent Ba(1) and one Y(1) atom. In the fourth Cl site, Cl(4) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Y(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2YCl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.276
_cell_length_b   9.276
_cell_length_c   10.391
_cell_angle_alpha   56.344
_cell_angle_beta   56.344
_cell_angle_gamma   52.362
_symmetry_Int_Tables_number   1
_cell_volume   556.891
_cell_formula_units_Z   2
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  0.697  0.680  0.719  1.0
  Ba  Ba1  1  0.680  0.697  0.219  1.0
  Ba  Ba2  1  0.320  0.303  0.781  1.0
  Ba  Ba3  1  0.303  0.320  0.281  1.0
  Y  Y4  1  0.034  0.966  0.750  1.0
  Y  Y5  1  0.966  0.034  0.250  1.0
  Cl  Cl6  1  0.931  0.689  0.849  1.0
  Cl  Cl7  1  0.689  0.931  0.349  1.0
  Cl  Cl8  1  0.935  0.241  0.937  1.0
  Cl  Cl9  1  0.892  0.357  0.552  1.0
  Cl  Cl10  1  0.388  0.612  0.750  1.0
  Cl  Cl11  1  0.241  0.935  0.437  1.0
  Cl  Cl12  1  0.643  0.108  0.948  1.0
  Cl  Cl13  1  0.357  0.892  0.052  1.0
  Cl  Cl14  1  0.759  0.065  0.563  1.0
  Cl  Cl15  1  0.612  0.388  0.250  1.0
  Cl  Cl16  1  0.108  0.643  0.448  1.0
  Cl  Cl17  1  0.065  0.759  0.063  1.0
  Cl  Cl18  1  0.311  0.069  0.651  1.0
  Cl  Cl19  1  0.069  0.311  0.151  1.0
[/CIF]
.
The compound described by Ba2YCl7 crystallizes in the monoclinic C2/c space group. Ba(1) is bonded in a 9-coordinate geometry to one Cl(4), two equivalent Cl(2), three equivalent Cl(1), and three equivalent Cl(3) atoms. Y(1) is bonded in a 9-coordinate geometry to one Cl(4), two equivalent Cl(1), two equivalent Cl(3), and four equivalent Cl(2) atoms. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to three equivalent Ba(1) and one Y(1) atom to form a mixture of distorted edge and corner-sharing ClBa3Y tetrahedra. In the second Cl site, Cl(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and two equivalent Y(1) atoms. In the third Cl site, Cl(3) is bonded in a 4-coordinate geometry to three equivalent Ba(1) and one Y(1) atom. In the fourth Cl site, Cl(4) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Y(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2YCl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.276
_cell_length_b   9.276
_cell_length_c   10.391
_cell_angle_alpha   56.344
_cell_angle_beta   56.344
_cell_angle_gamma   52.362
_symmetry_Int_Tables_number   1
_cell_volume   556.891
_cell_formula_units_Z   2
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  0.697  0.680  0.719  1.0
  Ba  Ba1  1  0.680  0.697  0.219  1.0
  Ba  Ba2  1  0.320  0.303  0.781  1.0
  Ba  Ba3  1  0.303  0.320  0.281  1.0
  Y  Y4  1  0.034  0.966  0.750  1.0
  Y  Y5  1  0.966  0.034  0.250  1.0
  Cl  Cl6  1  0.931  0.689  0.849  1.0
  Cl  Cl7  1  0.689  0.931  0.349  1.0
  Cl  Cl8  1  0.935  0.241  0.937  1.0
  Cl  Cl9  1  0.892  0.357  0.552  1.0
  Cl  Cl10  1  0.388  0.612  0.750  1.0
  Cl  Cl11  1  0.241  0.935  0.437  1.0
  Cl  Cl12  1  0.643  0.108  0.948  1.0
  Cl  Cl13  1  0.357  0.892  0.052  1.0
  Cl  Cl14  1  0.759  0.065  0.563  1.0
  Cl  Cl15  1  0.612  0.388  0.250  1.0
  Cl  Cl16  1  0.108  0.643  0.448  1.0
  Cl  Cl17  1  0.065  0.759  0.063  1.0
  Cl  Cl18  1  0.311  0.069  0.651  1.0
  Cl  Cl19  1  0.069  0.311  0.151  1.0
[/CIF]
.