The material structure described by Sr2LaCl7 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one Cl(1), two equivalent Cl(3), two equivalent Cl(4), and two equivalent Cl(5) atoms to form SrCl7 pentagonal bipyramids that share corners with three equivalent La(1)Cl6 octahedra, corners with two equivalent Sr(1)Cl7 pentagonal bipyramids, and  an edgeedge with one La(1)Cl6 octahedra. The corner-sharing octahedral tilt angles range from 39-54°. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), two equivalent Cl(4), and two equivalent Cl(5) atoms. La(1) is bonded to one Cl(1), one Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms to form LaCl6 octahedra that share corners with three equivalent Sr(1)Cl7 pentagonal bipyramids and  an edgeedge with one Sr(1)Cl7 pentagonal bipyramid. There are five inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a trigonal planar geometry to one Sr(1), one Sr(2), and one La(1) atom. In the second Cl site, Cl(2) is bonded in a bent 150 degrees geometry to one Sr(2) and one La(1) atom. In the third Cl site, Cl(3) is bonded in a trigonal planar geometry to one Sr(2) and two equivalent Sr(1) atoms. In the fourth Cl site, Cl(4) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(2), and one La(1) atom. In the fifth Cl site, Cl(5) is bonded in a trigonal planar geometry to one Sr(1), one Sr(2), and one La(1) atom. is represented by the CIF card [CIF]
data_Sr2LaCl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.454
_cell_length_b   10.540
_cell_length_c   13.311
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1326.304
_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
  Sr  Sr0  1  0.250  0.133  0.747  1.0
  Sr  Sr1  1  0.750  0.185  0.912  1.0
  Sr  Sr2  1  0.250  0.315  0.412  1.0
  Sr  Sr3  1  0.750  0.367  0.247  1.0
  Sr  Sr4  1  0.250  0.633  0.753  1.0
  Sr  Sr5  1  0.750  0.685  0.588  1.0
  Sr  Sr6  1  0.250  0.815  0.088  1.0
  Sr  Sr7  1  0.750  0.867  0.253  1.0
  La  La8  1  0.750  0.181  0.558  1.0
  La  La9  1  0.250  0.319  0.058  1.0
  La  La10  1  0.750  0.681  0.942  1.0
  La  La11  1  0.250  0.819  0.442  1.0
  Cl  Cl12  1  0.250  0.068  0.524  1.0
  Cl  Cl13  1  0.250  0.078  0.130  1.0
  Cl  Cl14  1  0.750  0.117  0.137  1.0
  Cl  Cl15  1  0.557  0.112  0.700  1.0
  Cl  Cl16  1  0.943  0.112  0.700  1.0
  Cl  Cl17  1  0.942  0.257  0.409  1.0
  Cl  Cl18  1  0.558  0.257  0.409  1.0
  Cl  Cl19  1  0.058  0.243  0.909  1.0
  Cl  Cl20  1  0.442  0.243  0.909  1.0
  Cl  Cl21  1  0.057  0.388  0.200  1.0
  Cl  Cl22  1  0.443  0.388  0.200  1.0
  Cl  Cl23  1  0.250  0.383  0.637  1.0
  Cl  Cl24  1  0.750  0.422  0.630  1.0
  Cl  Cl25  1  0.750  0.432  0.024  1.0
  Cl  Cl26  1  0.250  0.568  0.976  1.0
  Cl  Cl27  1  0.250  0.578  0.370  1.0
  Cl  Cl28  1  0.750  0.617  0.363  1.0
  Cl  Cl29  1  0.557  0.612  0.800  1.0
  Cl  Cl30  1  0.943  0.612  0.800  1.0
  Cl  Cl31  1  0.558  0.757  0.091  1.0
  Cl  Cl32  1  0.942  0.757  0.091  1.0
  Cl  Cl33  1  0.058  0.743  0.591  1.0
  Cl  Cl34  1  0.442  0.743  0.591  1.0
  Cl  Cl35  1  0.057  0.888  0.300  1.0
  Cl  Cl36  1  0.443  0.888  0.300  1.0
  Cl  Cl37  1  0.250  0.883  0.863  1.0
  Cl  Cl38  1  0.750  0.922  0.870  1.0
  Cl  Cl39  1  0.750  0.932  0.476  1.0
[/CIF]
.
The material structure described by Sr2LaCl7 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one Cl(1), two equivalent Cl(3), two equivalent Cl(4), and two equivalent Cl(5) atoms to form SrCl7 pentagonal bipyramids that share corners with three equivalent La(1)Cl6 octahedra, corners with two equivalent Sr(1)Cl7 pentagonal bipyramids, and  an edgeedge with one La(1)Cl6 octahedra. The corner-sharing octahedral tilt angles range from 39-54°. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), two equivalent Cl(4), and two equivalent Cl(5) atoms. La(1) is bonded to one Cl(1), one Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms to form LaCl6 octahedra that share corners with three equivalent Sr(1)Cl7 pentagonal bipyramids and  an edgeedge with one Sr(1)Cl7 pentagonal bipyramid. There are five inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a trigonal planar geometry to one Sr(1), one Sr(2), and one La(1) atom. In the second Cl site, Cl(2) is bonded in a bent 150 degrees geometry to one Sr(2) and one La(1) atom. In the third Cl site, Cl(3) is bonded in a trigonal planar geometry to one Sr(2) and two equivalent Sr(1) atoms. In the fourth Cl site, Cl(4) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(2), and one La(1) atom. In the fifth Cl site, Cl(5) is bonded in a trigonal planar geometry to one Sr(1), one Sr(2), and one La(1) atom. is represented by the CIF card [CIF]
data_Sr2LaCl7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.454
_cell_length_b   10.540
_cell_length_c   13.311
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1326.304
_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
  Sr  Sr0  1  0.250  0.133  0.747  1.0
  Sr  Sr1  1  0.750  0.185  0.912  1.0
  Sr  Sr2  1  0.250  0.315  0.412  1.0
  Sr  Sr3  1  0.750  0.367  0.247  1.0
  Sr  Sr4  1  0.250  0.633  0.753  1.0
  Sr  Sr5  1  0.750  0.685  0.588  1.0
  Sr  Sr6  1  0.250  0.815  0.088  1.0
  Sr  Sr7  1  0.750  0.867  0.253  1.0
  La  La8  1  0.750  0.181  0.558  1.0
  La  La9  1  0.250  0.319  0.058  1.0
  La  La10  1  0.750  0.681  0.942  1.0
  La  La11  1  0.250  0.819  0.442  1.0
  Cl  Cl12  1  0.250  0.068  0.524  1.0
  Cl  Cl13  1  0.250  0.078  0.130  1.0
  Cl  Cl14  1  0.750  0.117  0.137  1.0
  Cl  Cl15  1  0.557  0.112  0.700  1.0
  Cl  Cl16  1  0.943  0.112  0.700  1.0
  Cl  Cl17  1  0.942  0.257  0.409  1.0
  Cl  Cl18  1  0.558  0.257  0.409  1.0
  Cl  Cl19  1  0.058  0.243  0.909  1.0
  Cl  Cl20  1  0.442  0.243  0.909  1.0
  Cl  Cl21  1  0.057  0.388  0.200  1.0
  Cl  Cl22  1  0.443  0.388  0.200  1.0
  Cl  Cl23  1  0.250  0.383  0.637  1.0
  Cl  Cl24  1  0.750  0.422  0.630  1.0
  Cl  Cl25  1  0.750  0.432  0.024  1.0
  Cl  Cl26  1  0.250  0.568  0.976  1.0
  Cl  Cl27  1  0.250  0.578  0.370  1.0
  Cl  Cl28  1  0.750  0.617  0.363  1.0
  Cl  Cl29  1  0.557  0.612  0.800  1.0
  Cl  Cl30  1  0.943  0.612  0.800  1.0
  Cl  Cl31  1  0.558  0.757  0.091  1.0
  Cl  Cl32  1  0.942  0.757  0.091  1.0
  Cl  Cl33  1  0.058  0.743  0.591  1.0
  Cl  Cl34  1  0.442  0.743  0.591  1.0
  Cl  Cl35  1  0.057  0.888  0.300  1.0
  Cl  Cl36  1  0.443  0.888  0.300  1.0
  Cl  Cl37  1  0.250  0.883  0.863  1.0
  Cl  Cl38  1  0.750  0.922  0.870  1.0
  Cl  Cl39  1  0.750  0.932  0.476  1.0
[/CIF]
.