The compound described by Cs2La10Os2I17 crystallizes in the monoclinic C2/m space group. Cs(1) is bonded in a 12-coordinate geometry to two equivalent I(2), two equivalent I(3), two equivalent I(4), two equivalent I(5), and four equivalent I(1) atoms. There are four inequivalent La sites. In the first La site, La(1) is bonded to one Os(1), one I(1), two equivalent I(2), and two equivalent I(4) atoms to form LaOsI5 octahedra that share  a cornercorner with one La(1)OsI5 octahedra,  a cornercorner with one La(2)OsI5 octahedra,  an edgeedge with one La(2)OsI5 octahedra,  an edgeedge with one La(4)OsI5 octahedra, edges with two equivalent La(3)Os2I4 octahedra, and edges with two equivalent La(1)OsI5 octahedra. The corner-sharing octahedral tilt angles range from 1-9°. In the second La site, La(2) is bonded to one Os(1), one I(5), two equivalent I(2), and two equivalent I(3) atoms to form distorted LaOsI5 octahedra that share  a cornercorner with one La(3)Os2I4 octahedra, corners with two equivalent La(1)OsI5 octahedra, corners with two equivalent La(4)OsI5 octahedra,  an edgeedge with one La(3)Os2I4 octahedra,  an edgeedge with one La(2)OsI5 octahedra,  an edgeedge with one La(4)OsI5 octahedra, and edges with two equivalent La(1)OsI5 octahedra. The corner-sharing octahedral tilt angles range from 6-11°. In the third La site, La(3) is bonded to two equivalent Os(1), one I(5), one I(6), and two equivalent I(4) atoms to form distorted LaOs2I4 octahedra that share  a cornercorner with one La(3)Os2I4 octahedra,  a cornercorner with one La(2)OsI5 octahedra,  a cornercorner with one La(4)OsI5 octahedra,  an edgeedge with one La(3)Os2I4 octahedra,  an edgeedge with one La(2)OsI5 octahedra, edges with two equivalent La(4)OsI5 octahedra, and edges with four equivalent La(1)OsI5 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the fourth La site, La(4) is bonded to one Os(1), one I(3), one I(5), one I(6), and two equivalent I(1) atoms to form distorted LaOsI5 octahedra that share  a cornercorner with one La(3)Os2I4 octahedra,  a cornercorner with one La(4)OsI5 octahedra, corners with two equivalent La(2)OsI5 octahedra,  an edgeedge with one La(2)OsI5 octahedra, edges with two equivalent La(3)Os2I4 octahedra, and edges with two equivalent La(1)OsI5 octahedra. The corner-sharing octahedral tilt angles range from 0-11°. Os(1) is bonded to one La(2), one La(4), two equivalent La(1), and two equivalent La(3) atoms to form edge-sharing OsLa6 octahedra. There are six inequivalent I sites. In the first I site, I(2) is bonded in a distorted T-shaped geometry to one Cs(1), one La(2), and two equivalent La(1) atoms. In the second I site, I(3) is bonded in a distorted T-shaped geometry to two equivalent Cs(1), one La(4), and two equivalent La(2) atoms. In the third I site, I(4) is bonded in a 4-coordinate geometry to one Cs(1), one La(3), and two equivalent La(1) atoms. In the fourth I site, I(5) is bonded in a 3-coordinate geometry to two equivalent Cs(1), one La(2), one La(3), and one La(4) atom. In the fifth I site, I(6) is bonded in a distorted square co-planar geometry to two equivalent La(3) and two equivalent La(4) atoms. In the sixth I site, I(1) is bonded in a 2-coordinate geometry to two equivalent Cs(1), one La(1), and one La(4) atom. is represented by the CIF file [CIF]
data_Cs2La10Os2I17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.950
_cell_length_b   11.950
_cell_length_c   10.161
_cell_angle_alpha   86.790
_cell_angle_beta   86.790
_cell_angle_gamma   107.789
_symmetry_Int_Tables_number   1
_cell_volume   1375.378
_cell_formula_units_Z   1
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
  Cs  Cs0  1  0.674  0.326  0.000  1.0
  Cs  Cs1  1  0.326  0.674  0.000  1.0
  La  La2  1  0.707  0.007  0.427  1.0
  La  La3  1  0.293  0.993  0.573  1.0
  La  La4  1  0.993  0.293  0.573  1.0
  La  La5  1  0.007  0.707  0.427  1.0
  La  La6  1  0.670  0.670  0.556  1.0
  La  La7  1  0.330  0.330  0.444  1.0
  La  La8  1  0.936  0.936  0.680  1.0
  La  La9  1  0.064  0.064  0.320  1.0
  La  La10  1  0.793  0.793  0.183  1.0
  La  La11  1  0.207  0.207  0.817  1.0
  Os  Os12  1  0.857  0.857  0.429  1.0
  Os  Os13  1  0.143  0.143  0.571  1.0
  I  I14  1  0.615  0.950  0.138  1.0
  I  I15  1  0.385  0.050  0.862  1.0
  I  I16  1  0.050  0.385  0.862  1.0
  I  I17  1  0.950  0.615  0.138  1.0
  I  I18  1  0.528  0.190  0.420  1.0
  I  I19  1  0.472  0.810  0.580  1.0
  I  I20  1  0.810  0.472  0.580  1.0
  I  I21  1  0.190  0.528  0.420  1.0
  I  I22  1  0.562  0.562  0.281  1.0
  I  I23  1  0.438  0.438  0.719  1.0
  I  I24  1  0.248  0.900  0.273  1.0
  I  I25  1  0.752  0.100  0.727  1.0
  I  I26  1  0.100  0.752  0.727  1.0
  I  I27  1  0.900  0.248  0.273  1.0
  I  I28  1  0.290  0.290  0.131  1.0
  I  I29  1  0.710  0.710  0.869  1.0
  I  I30  1  0.000  0.000  0.000  1.0
[/CIF]
.
The compound described by Cs2La10Os2I17 crystallizes in the monoclinic C2/m space group. Cs(1) is bonded in a 12-coordinate geometry to two equivalent I(2), two equivalent I(3), two equivalent I(4), two equivalent I(5), and four equivalent I(1) atoms. There are four inequivalent La sites. In the first La site, La(1) is bonded to one Os(1), one I(1), two equivalent I(2), and two equivalent I(4) atoms to form LaOsI5 octahedra that share  a cornercorner with one La(1)OsI5 octahedra,  a cornercorner with one La(2)OsI5 octahedra,  an edgeedge with one La(2)OsI5 octahedra,  an edgeedge with one La(4)OsI5 octahedra, edges with two equivalent La(3)Os2I4 octahedra, and edges with two equivalent La(1)OsI5 octahedra. The corner-sharing octahedral tilt angles range from 1-9°. In the second La site, La(2) is bonded to one Os(1), one I(5), two equivalent I(2), and two equivalent I(3) atoms to form distorted LaOsI5 octahedra that share  a cornercorner with one La(3)Os2I4 octahedra, corners with two equivalent La(1)OsI5 octahedra, corners with two equivalent La(4)OsI5 octahedra,  an edgeedge with one La(3)Os2I4 octahedra,  an edgeedge with one La(2)OsI5 octahedra,  an edgeedge with one La(4)OsI5 octahedra, and edges with two equivalent La(1)OsI5 octahedra. The corner-sharing octahedral tilt angles range from 6-11°. In the third La site, La(3) is bonded to two equivalent Os(1), one I(5), one I(6), and two equivalent I(4) atoms to form distorted LaOs2I4 octahedra that share  a cornercorner with one La(3)Os2I4 octahedra,  a cornercorner with one La(2)OsI5 octahedra,  a cornercorner with one La(4)OsI5 octahedra,  an edgeedge with one La(3)Os2I4 octahedra,  an edgeedge with one La(2)OsI5 octahedra, edges with two equivalent La(4)OsI5 octahedra, and edges with four equivalent La(1)OsI5 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the fourth La site, La(4) is bonded to one Os(1), one I(3), one I(5), one I(6), and two equivalent I(1) atoms to form distorted LaOsI5 octahedra that share  a cornercorner with one La(3)Os2I4 octahedra,  a cornercorner with one La(4)OsI5 octahedra, corners with two equivalent La(2)OsI5 octahedra,  an edgeedge with one La(2)OsI5 octahedra, edges with two equivalent La(3)Os2I4 octahedra, and edges with two equivalent La(1)OsI5 octahedra. The corner-sharing octahedral tilt angles range from 0-11°. Os(1) is bonded to one La(2), one La(4), two equivalent La(1), and two equivalent La(3) atoms to form edge-sharing OsLa6 octahedra. There are six inequivalent I sites. In the first I site, I(2) is bonded in a distorted T-shaped geometry to one Cs(1), one La(2), and two equivalent La(1) atoms. In the second I site, I(3) is bonded in a distorted T-shaped geometry to two equivalent Cs(1), one La(4), and two equivalent La(2) atoms. In the third I site, I(4) is bonded in a 4-coordinate geometry to one Cs(1), one La(3), and two equivalent La(1) atoms. In the fourth I site, I(5) is bonded in a 3-coordinate geometry to two equivalent Cs(1), one La(2), one La(3), and one La(4) atom. In the fifth I site, I(6) is bonded in a distorted square co-planar geometry to two equivalent La(3) and two equivalent La(4) atoms. In the sixth I site, I(1) is bonded in a 2-coordinate geometry to two equivalent Cs(1), one La(1), and one La(4) atom. is represented by the CIF file [CIF]
data_Cs2La10Os2I17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.950
_cell_length_b   11.950
_cell_length_c   10.161
_cell_angle_alpha   86.790
_cell_angle_beta   86.790
_cell_angle_gamma   107.789
_symmetry_Int_Tables_number   1
_cell_volume   1375.378
_cell_formula_units_Z   1
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
  Cs  Cs0  1  0.674  0.326  0.000  1.0
  Cs  Cs1  1  0.326  0.674  0.000  1.0
  La  La2  1  0.707  0.007  0.427  1.0
  La  La3  1  0.293  0.993  0.573  1.0
  La  La4  1  0.993  0.293  0.573  1.0
  La  La5  1  0.007  0.707  0.427  1.0
  La  La6  1  0.670  0.670  0.556  1.0
  La  La7  1  0.330  0.330  0.444  1.0
  La  La8  1  0.936  0.936  0.680  1.0
  La  La9  1  0.064  0.064  0.320  1.0
  La  La10  1  0.793  0.793  0.183  1.0
  La  La11  1  0.207  0.207  0.817  1.0
  Os  Os12  1  0.857  0.857  0.429  1.0
  Os  Os13  1  0.143  0.143  0.571  1.0
  I  I14  1  0.615  0.950  0.138  1.0
  I  I15  1  0.385  0.050  0.862  1.0
  I  I16  1  0.050  0.385  0.862  1.0
  I  I17  1  0.950  0.615  0.138  1.0
  I  I18  1  0.528  0.190  0.420  1.0
  I  I19  1  0.472  0.810  0.580  1.0
  I  I20  1  0.810  0.472  0.580  1.0
  I  I21  1  0.190  0.528  0.420  1.0
  I  I22  1  0.562  0.562  0.281  1.0
  I  I23  1  0.438  0.438  0.719  1.0
  I  I24  1  0.248  0.900  0.273  1.0
  I  I25  1  0.752  0.100  0.727  1.0
  I  I26  1  0.100  0.752  0.727  1.0
  I  I27  1  0.900  0.248  0.273  1.0
  I  I28  1  0.290  0.290  0.131  1.0
  I  I29  1  0.710  0.710  0.869  1.0
  I  I30  1  0.000  0.000  0.000  1.0
[/CIF]
.