The structure described by La3Si2O8Cl crystallizes in the monoclinic Cc space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(7), one O(8), two equivalent O(6), and one Cl(1) atom. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(4), one O(6), one O(7), one O(8), two equivalent O(5), and one Cl(1) atom. In the third La site, La(3) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(7), one O(8), two equivalent O(3), two equivalent O(4), and one Cl(1) atom. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a tetrahedral geometry to one O(2), one O(4), one O(6), and one O(7) atom. In the second Si site, Si(2) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(5), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a 4-coordinate geometry to one La(1), two equivalent La(2), and one Si(2) atom. In the second O site, O(6) is bonded in a 4-coordinate geometry to one La(2), two equivalent La(1), and one Si(1) atom. In the third O site, O(7) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), and one Si(1) atom. In the fourth O site, O(8) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), and one Si(2) atom. In the fifth O site, O(1) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), and one Si(2) atom. In the sixth O site, O(2) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), and one Si(1) atom. In the seventh O site, O(3) is bonded in a distorted single-bond geometry to one La(1), two equivalent La(3), and one Si(2) atom. In the eighth O site, O(4) is bonded in a distorted single-bond geometry to one La(2), two equivalent La(3), and one Si(1) atom. Cl(1) is bonded in a distorted T-shaped geometry to one La(1), one La(2), and one La(3) atom. is represented by the CIF card [CIF]
data_La3Si2ClO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.034
_cell_length_b   8.034
_cell_length_c   8.911
_cell_angle_alpha   82.575
_cell_angle_beta   82.575
_cell_angle_gamma   48.313
_symmetry_Int_Tables_number   1
_cell_volume   425.156
_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  0.581  0.788  0.329  1.0
  La  La1  1  0.212  0.419  0.171  1.0
  La  La2  1  0.419  0.212  0.671  1.0
  La  La3  1  0.788  0.581  0.829  1.0
  La  La4  1  0.932  0.069  0.250  1.0
  La  La5  1  0.069  0.932  0.750  1.0
  Si  Si6  1  0.785  0.898  0.027  1.0
  Si  Si7  1  0.102  0.215  0.473  1.0
  Si  Si8  1  0.215  0.102  0.973  1.0
  Si  Si9  1  0.898  0.785  0.527  1.0
  Cl  Cl10  1  0.480  0.530  0.229  1.0
  Cl  Cl11  1  0.530  0.480  0.729  1.0
  O  O12  1  0.272  0.037  0.152  1.0
  O  O13  1  0.965  0.727  0.348  1.0
  O  O14  1  0.727  0.965  0.848  1.0
  O  O15  1  0.037  0.272  0.652  1.0
  O  O16  1  0.200  0.958  0.467  1.0
  O  O17  1  0.042  0.800  0.032  1.0
  O  O18  1  0.800  0.042  0.532  1.0
  O  O19  1  0.958  0.200  0.967  1.0
  O  O20  1  0.315  0.204  0.419  1.0
  O  O21  1  0.797  0.685  0.081  1.0
  O  O22  1  0.685  0.797  0.581  1.0
  O  O23  1  0.204  0.315  0.919  1.0
  O  O24  1  0.618  0.092  0.147  1.0
  O  O25  1  0.907  0.382  0.353  1.0
  O  O26  1  0.382  0.907  0.853  1.0
  O  O27  1  0.092  0.618  0.647  1.0
[/CIF]
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The structure described by La3Si2O8Cl crystallizes in the monoclinic Cc space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(7), one O(8), two equivalent O(6), and one Cl(1) atom. In the second La site, La(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(4), one O(6), one O(7), one O(8), two equivalent O(5), and one Cl(1) atom. In the third La site, La(3) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(7), one O(8), two equivalent O(3), two equivalent O(4), and one Cl(1) atom. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a tetrahedral geometry to one O(2), one O(4), one O(6), and one O(7) atom. In the second Si site, Si(2) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(5), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a 4-coordinate geometry to one La(1), two equivalent La(2), and one Si(2) atom. In the second O site, O(6) is bonded in a 4-coordinate geometry to one La(2), two equivalent La(1), and one Si(1) atom. In the third O site, O(7) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), and one Si(1) atom. In the fourth O site, O(8) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), and one Si(2) atom. In the fifth O site, O(1) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), and one Si(2) atom. In the sixth O site, O(2) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), and one Si(1) atom. In the seventh O site, O(3) is bonded in a distorted single-bond geometry to one La(1), two equivalent La(3), and one Si(2) atom. In the eighth O site, O(4) is bonded in a distorted single-bond geometry to one La(2), two equivalent La(3), and one Si(1) atom. Cl(1) is bonded in a distorted T-shaped geometry to one La(1), one La(2), and one La(3) atom. is represented by the CIF card [CIF]
data_La3Si2ClO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.034
_cell_length_b   8.034
_cell_length_c   8.911
_cell_angle_alpha   82.575
_cell_angle_beta   82.575
_cell_angle_gamma   48.313
_symmetry_Int_Tables_number   1
_cell_volume   425.156
_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  0.581  0.788  0.329  1.0
  La  La1  1  0.212  0.419  0.171  1.0
  La  La2  1  0.419  0.212  0.671  1.0
  La  La3  1  0.788  0.581  0.829  1.0
  La  La4  1  0.932  0.069  0.250  1.0
  La  La5  1  0.069  0.932  0.750  1.0
  Si  Si6  1  0.785  0.898  0.027  1.0
  Si  Si7  1  0.102  0.215  0.473  1.0
  Si  Si8  1  0.215  0.102  0.973  1.0
  Si  Si9  1  0.898  0.785  0.527  1.0
  Cl  Cl10  1  0.480  0.530  0.229  1.0
  Cl  Cl11  1  0.530  0.480  0.729  1.0
  O  O12  1  0.272  0.037  0.152  1.0
  O  O13  1  0.965  0.727  0.348  1.0
  O  O14  1  0.727  0.965  0.848  1.0
  O  O15  1  0.037  0.272  0.652  1.0
  O  O16  1  0.200  0.958  0.467  1.0
  O  O17  1  0.042  0.800  0.032  1.0
  O  O18  1  0.800  0.042  0.532  1.0
  O  O19  1  0.958  0.200  0.967  1.0
  O  O20  1  0.315  0.204  0.419  1.0
  O  O21  1  0.797  0.685  0.081  1.0
  O  O22  1  0.685  0.797  0.581  1.0
  O  O23  1  0.204  0.315  0.919  1.0
  O  O24  1  0.618  0.092  0.147  1.0
  O  O25  1  0.907  0.382  0.353  1.0
  O  O26  1  0.382  0.907  0.853  1.0
  O  O27  1  0.092  0.618  0.647  1.0
[/CIF]
.