The structure described by SrLaI4 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 8-coordinate geometry to four equivalent I(1) and four equivalent I(2) atoms. La(1) is bonded in a 8-coordinate geometry to four equivalent I(1) and four equivalent I(2) atoms. There are two inequivalent I sites. In the first I site, I(1) is bonded to two equivalent Sr(1) and two equivalent La(1) atoms to form a mixture of distorted corner, edge, and face-sharing ISr2La2 trigonal pyramids. In the second I site, I(2) is bonded to two equivalent Sr(1) and two equivalent La(1) atoms to form a mixture of distorted corner, edge, and face-sharing ISr2La2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrLaI4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.121
_cell_length_b   9.121
_cell_length_c   7.531
_cell_angle_alpha   71.246
_cell_angle_beta   71.236
_cell_angle_gamma   110.954
_symmetry_Int_Tables_number   1
_cell_volume   481.709
_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
  Sr  Sr0  1  0.635  0.365  0.750  1.0
  Sr  Sr1  1  0.365  0.635  0.250  1.0
  La  La2  1  0.999  0.001  0.250  1.0
  La  La3  1  0.001  0.999  0.750  1.0
  I  I4  1  0.945  0.301  0.412  1.0
  I  I5  1  0.699  0.055  0.088  1.0
  I  I6  1  0.055  0.699  0.588  1.0
  I  I7  1  0.301  0.945  0.912  1.0
  I  I8  1  0.367  0.244  0.261  1.0
  I  I9  1  0.756  0.633  0.239  1.0
  I  I10  1  0.633  0.756  0.739  1.0
  I  I11  1  0.244  0.367  0.761  1.0
[/CIF]
.
The structure described by SrLaI4 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 8-coordinate geometry to four equivalent I(1) and four equivalent I(2) atoms. La(1) is bonded in a 8-coordinate geometry to four equivalent I(1) and four equivalent I(2) atoms. There are two inequivalent I sites. In the first I site, I(1) is bonded to two equivalent Sr(1) and two equivalent La(1) atoms to form a mixture of distorted corner, edge, and face-sharing ISr2La2 trigonal pyramids. In the second I site, I(2) is bonded to two equivalent Sr(1) and two equivalent La(1) atoms to form a mixture of distorted corner, edge, and face-sharing ISr2La2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrLaI4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.121
_cell_length_b   9.121
_cell_length_c   7.531
_cell_angle_alpha   71.246
_cell_angle_beta   71.236
_cell_angle_gamma   110.954
_symmetry_Int_Tables_number   1
_cell_volume   481.709
_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
  Sr  Sr0  1  0.635  0.365  0.750  1.0
  Sr  Sr1  1  0.365  0.635  0.250  1.0
  La  La2  1  0.999  0.001  0.250  1.0
  La  La3  1  0.001  0.999  0.750  1.0
  I  I4  1  0.945  0.301  0.412  1.0
  I  I5  1  0.699  0.055  0.088  1.0
  I  I6  1  0.055  0.699  0.588  1.0
  I  I7  1  0.301  0.945  0.912  1.0
  I  I8  1  0.367  0.244  0.261  1.0
  I  I9  1  0.756  0.633  0.239  1.0
  I  I10  1  0.633  0.756  0.739  1.0
  I  I11  1  0.244  0.367  0.761  1.0
[/CIF]
.