The compound described by La2O19I6 crystallizes in the monoclinic Pc space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a distorted q6 geometry to one O(1), one O(10), one O(11), one O(12), one O(17), one O(4), one O(6), one O(7), and one O(9) atom. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(13), one O(15), one O(16), one O(18), one O(19), one O(2), one O(3), one O(5), and one O(8) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one La(1) and one I(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one La(2) and one I(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one La(2) and one I(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one La(1) and one I(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one La(2) and one I(2) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one La(1) and one I(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one La(1), one I(2), and one I(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one La(2), one I(3), and one I(6) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one La(1), one I(3), and one I(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one La(1), one I(3), and one I(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one La(1) and one I(4) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one La(1) and one I(4) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one La(2) and one I(5) atom. In the fourteenth O site, O(14) is bonded in a single-bond geometry to one I(5) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one La(2) and one I(5) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one La(2) and one I(6) atom. In the seventeenth O site, O(17) is bonded in a distorted bent 120 degrees geometry to one La(1) and one I(6) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 150 degrees geometry to one La(2) and one I(6) atom. In the nineteenth O site, O(19) is bonded in a single-bond geometry to one La(2) atom. There are six inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), and one O(3) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(4), one O(5), one O(6), and one O(7) atom. In the third I site, I(3) is bonded in a 3-coordinate geometry to one O(10), one O(7), one O(8), and one O(9) atom. In the fourth I site, I(4) is bonded in a 3-coordinate geometry to one O(10), one O(11), one O(12), and one O(9) atom. In the fifth I site, I(5) is bonded in a distorted trigonal non-coplanar geometry to one O(13), one O(14), and one O(15) atom. In the sixth I site, I(6) is bonded in a 3-coordinate geometry to one O(16), one O(17), one O(18), and one O(8) atom. is represented by the CIF card [CIF]
data_La2I6O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.258
_cell_length_b   7.444
_cell_length_c   12.974
_cell_angle_alpha   57.352
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   915.511
_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
  La  La0  1  0.501  0.100  0.078  1.0
  La  La1  1  0.499  0.100  0.578  1.0
  La  La2  1  0.021  0.495  0.677  1.0
  La  La3  1  0.979  0.495  0.177  1.0
  I  I4  1  0.851  0.100  0.078  1.0
  I  I5  1  0.149  0.100  0.578  1.0
  I  I6  1  0.667  0.332  0.759  1.0
  I  I7  1  0.333  0.332  0.259  1.0
  I  I8  1  0.330  0.554  0.787  1.0
  I  I9  1  0.670  0.554  0.287  1.0
  I  I10  1  0.467  0.750  0.446  1.0
  I  I11  1  0.533  0.750  0.946  1.0
  I  I12  1  0.149  0.766  0.320  1.0
  I  I13  1  0.851  0.766  0.820  1.0
  I  I14  1  0.811  0.028  0.449  1.0
  I  I15  1  0.189  0.028  0.949  1.0
  O  O16  1  0.711  0.116  0.144  1.0
  O  O17  1  0.289  0.116  0.644  1.0
  O  O18  1  0.872  0.809  0.172  1.0
  O  O19  1  0.128  0.809  0.672  1.0
  O  O20  1  0.950  0.172  0.163  1.0
  O  O21  1  0.050  0.172  0.663  1.0
  O  O22  1  0.665  0.163  0.927  1.0
  O  O23  1  0.335  0.163  0.427  1.0
  O  O24  1  0.826  0.306  0.741  1.0
  O  O25  1  0.174  0.306  0.241  1.0
  O  O26  1  0.619  0.118  0.738  1.0
  O  O27  1  0.381  0.118  0.238  1.0
  O  O28  1  0.456  0.368  0.846  1.0
  O  O29  1  0.544  0.368  0.346  1.0
  O  O30  1  0.233  0.395  0.748  1.0
  O  O31  1  0.767  0.395  0.248  1.0
  O  O32  1  0.388  0.741  0.633  1.0
  O  O33  1  0.612  0.741  0.133  1.0
  O  O34  1  0.543  0.809  0.304  1.0
  O  O35  1  0.457  0.809  0.804  1.0
  O  O36  1  0.520  0.473  0.542  1.0
  O  O37  1  0.480  0.473  0.042  1.0
  O  O38  1  0.577  0.882  0.490  1.0
  O  O39  1  0.423  0.882  0.990  1.0
  O  O40  1  0.055  0.543  0.346  1.0
  O  O41  1  0.945  0.543  0.846  1.0
  O  O42  1  0.294  0.647  0.332  1.0
  O  O43  1  0.706  0.647  0.832  1.0
  O  O44  1  0.133  0.719  0.473  1.0
  O  O45  1  0.867  0.719  0.973  1.0
  O  O46  1  0.954  0.166  0.407  1.0
  O  O47  1  0.046  0.166  0.907  1.0
  O  O48  1  0.733  0.151  0.520  1.0
  O  O49  1  0.267  0.151  0.020  1.0
  O  O50  1  0.862  0.787  0.595  1.0
  O  O51  1  0.138  0.787  0.095  1.0
  O  O52  1  0.895  0.532  0.494  1.0
  O  O53  1  0.105  0.532  0.994  1.0
[/CIF]
.
The compound described by La2O19I6 crystallizes in the monoclinic Pc space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a distorted q6 geometry to one O(1), one O(10), one O(11), one O(12), one O(17), one O(4), one O(6), one O(7), and one O(9) atom. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(13), one O(15), one O(16), one O(18), one O(19), one O(2), one O(3), one O(5), and one O(8) atom. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one La(1) and one I(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one La(2) and one I(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one La(2) and one I(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one La(1) and one I(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one La(2) and one I(2) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one La(1) and one I(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one La(1), one I(2), and one I(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one La(2), one I(3), and one I(6) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one La(1), one I(3), and one I(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one La(1), one I(3), and one I(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one La(1) and one I(4) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one La(1) and one I(4) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one La(2) and one I(5) atom. In the fourteenth O site, O(14) is bonded in a single-bond geometry to one I(5) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one La(2) and one I(5) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one La(2) and one I(6) atom. In the seventeenth O site, O(17) is bonded in a distorted bent 120 degrees geometry to one La(1) and one I(6) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 150 degrees geometry to one La(2) and one I(6) atom. In the nineteenth O site, O(19) is bonded in a single-bond geometry to one La(2) atom. There are six inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), and one O(3) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(4), one O(5), one O(6), and one O(7) atom. In the third I site, I(3) is bonded in a 3-coordinate geometry to one O(10), one O(7), one O(8), and one O(9) atom. In the fourth I site, I(4) is bonded in a 3-coordinate geometry to one O(10), one O(11), one O(12), and one O(9) atom. In the fifth I site, I(5) is bonded in a distorted trigonal non-coplanar geometry to one O(13), one O(14), and one O(15) atom. In the sixth I site, I(6) is bonded in a 3-coordinate geometry to one O(16), one O(17), one O(18), and one O(8) atom. is represented by the CIF card [CIF]
data_La2I6O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.258
_cell_length_b   7.444
_cell_length_c   12.974
_cell_angle_alpha   57.352
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   915.511
_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
  La  La0  1  0.501  0.100  0.078  1.0
  La  La1  1  0.499  0.100  0.578  1.0
  La  La2  1  0.021  0.495  0.677  1.0
  La  La3  1  0.979  0.495  0.177  1.0
  I  I4  1  0.851  0.100  0.078  1.0
  I  I5  1  0.149  0.100  0.578  1.0
  I  I6  1  0.667  0.332  0.759  1.0
  I  I7  1  0.333  0.332  0.259  1.0
  I  I8  1  0.330  0.554  0.787  1.0
  I  I9  1  0.670  0.554  0.287  1.0
  I  I10  1  0.467  0.750  0.446  1.0
  I  I11  1  0.533  0.750  0.946  1.0
  I  I12  1  0.149  0.766  0.320  1.0
  I  I13  1  0.851  0.766  0.820  1.0
  I  I14  1  0.811  0.028  0.449  1.0
  I  I15  1  0.189  0.028  0.949  1.0
  O  O16  1  0.711  0.116  0.144  1.0
  O  O17  1  0.289  0.116  0.644  1.0
  O  O18  1  0.872  0.809  0.172  1.0
  O  O19  1  0.128  0.809  0.672  1.0
  O  O20  1  0.950  0.172  0.163  1.0
  O  O21  1  0.050  0.172  0.663  1.0
  O  O22  1  0.665  0.163  0.927  1.0
  O  O23  1  0.335  0.163  0.427  1.0
  O  O24  1  0.826  0.306  0.741  1.0
  O  O25  1  0.174  0.306  0.241  1.0
  O  O26  1  0.619  0.118  0.738  1.0
  O  O27  1  0.381  0.118  0.238  1.0
  O  O28  1  0.456  0.368  0.846  1.0
  O  O29  1  0.544  0.368  0.346  1.0
  O  O30  1  0.233  0.395  0.748  1.0
  O  O31  1  0.767  0.395  0.248  1.0
  O  O32  1  0.388  0.741  0.633  1.0
  O  O33  1  0.612  0.741  0.133  1.0
  O  O34  1  0.543  0.809  0.304  1.0
  O  O35  1  0.457  0.809  0.804  1.0
  O  O36  1  0.520  0.473  0.542  1.0
  O  O37  1  0.480  0.473  0.042  1.0
  O  O38  1  0.577  0.882  0.490  1.0
  O  O39  1  0.423  0.882  0.990  1.0
  O  O40  1  0.055  0.543  0.346  1.0
  O  O41  1  0.945  0.543  0.846  1.0
  O  O42  1  0.294  0.647  0.332  1.0
  O  O43  1  0.706  0.647  0.832  1.0
  O  O44  1  0.133  0.719  0.473  1.0
  O  O45  1  0.867  0.719  0.973  1.0
  O  O46  1  0.954  0.166  0.407  1.0
  O  O47  1  0.046  0.166  0.907  1.0
  O  O48  1  0.733  0.151  0.520  1.0
  O  O49  1  0.267  0.151  0.020  1.0
  O  O50  1  0.862  0.787  0.595  1.0
  O  O51  1  0.138  0.787  0.095  1.0
  O  O52  1  0.895  0.532  0.494  1.0
  O  O53  1  0.105  0.532  0.994  1.0
[/CIF]
.