The compound described by Ce3Ta(O2Cl)3 crystallizes in the hexagonal P6_3/m space group. Ce(1) is bonded in a 10-coordinate geometry to six equivalent O(1) and four equivalent Cl(1) atoms. Ta(1) is bonded in a distorted pentagonal pyramidal geometry to six equivalent O(1) atoms. O(1) is bonded to three equivalent Ce(1) and one Ta(1) atom to form a mixture of distorted corner and edge-sharing OCe3Ta tetrahedra. Cl(1) is bonded in a see-saw-like geometry to four equivalent Ce(1) atoms. is represented by the CIF file [CIF]
data_Ce3Ta(ClO2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.322
_cell_length_b   9.322
_cell_length_c   5.410
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   407.125
_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
  Ce  Ce0  1  0.589  0.680  0.750  1.0
  Ce  Ce1  1  0.090  0.411  0.750  1.0
  Ce  Ce2  1  0.411  0.320  0.250  1.0
  Ce  Ce3  1  0.320  0.910  0.750  1.0
  Ce  Ce4  1  0.910  0.589  0.250  1.0
  Ce  Ce5  1  0.680  0.090  0.250  1.0
  Ta  Ta6  1  0.667  0.333  0.750  1.0
  Ta  Ta7  1  0.333  0.667  0.250  1.0
  Cl  Cl8  1  0.948  0.759  0.750  1.0
  Cl  Cl9  1  0.241  0.189  0.750  1.0
  Cl  Cl10  1  0.052  0.241  0.250  1.0
  Cl  Cl11  1  0.189  0.948  0.250  1.0
  Cl  Cl12  1  0.811  0.052  0.750  1.0
  Cl  Cl13  1  0.759  0.811  0.250  1.0
  O  O14  1  0.635  0.479  0.989  1.0
  O  O15  1  0.845  0.365  0.511  1.0
  O  O16  1  0.479  0.845  0.011  1.0
  O  O17  1  0.521  0.155  0.511  1.0
  O  O18  1  0.479  0.845  0.489  1.0
  O  O19  1  0.155  0.635  0.489  1.0
  O  O20  1  0.365  0.521  0.489  1.0
  O  O21  1  0.155  0.635  0.011  1.0
  O  O22  1  0.521  0.155  0.989  1.0
  O  O23  1  0.635  0.479  0.511  1.0
  O  O24  1  0.845  0.365  0.989  1.0
  O  O25  1  0.365  0.521  0.011  1.0
[/CIF]
.
The compound described by Ce3Ta(O2Cl)3 crystallizes in the hexagonal P6_3/m space group. Ce(1) is bonded in a 10-coordinate geometry to six equivalent O(1) and four equivalent Cl(1) atoms. Ta(1) is bonded in a distorted pentagonal pyramidal geometry to six equivalent O(1) atoms. O(1) is bonded to three equivalent Ce(1) and one Ta(1) atom to form a mixture of distorted corner and edge-sharing OCe3Ta tetrahedra. Cl(1) is bonded in a see-saw-like geometry to four equivalent Ce(1) atoms. is represented by the CIF file [CIF]
data_Ce3Ta(ClO2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.322
_cell_length_b   9.322
_cell_length_c   5.410
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   407.125
_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
  Ce  Ce0  1  0.589  0.680  0.750  1.0
  Ce  Ce1  1  0.090  0.411  0.750  1.0
  Ce  Ce2  1  0.411  0.320  0.250  1.0
  Ce  Ce3  1  0.320  0.910  0.750  1.0
  Ce  Ce4  1  0.910  0.589  0.250  1.0
  Ce  Ce5  1  0.680  0.090  0.250  1.0
  Ta  Ta6  1  0.667  0.333  0.750  1.0
  Ta  Ta7  1  0.333  0.667  0.250  1.0
  Cl  Cl8  1  0.948  0.759  0.750  1.0
  Cl  Cl9  1  0.241  0.189  0.750  1.0
  Cl  Cl10  1  0.052  0.241  0.250  1.0
  Cl  Cl11  1  0.189  0.948  0.250  1.0
  Cl  Cl12  1  0.811  0.052  0.750  1.0
  Cl  Cl13  1  0.759  0.811  0.250  1.0
  O  O14  1  0.635  0.479  0.989  1.0
  O  O15  1  0.845  0.365  0.511  1.0
  O  O16  1  0.479  0.845  0.011  1.0
  O  O17  1  0.521  0.155  0.511  1.0
  O  O18  1  0.479  0.845  0.489  1.0
  O  O19  1  0.155  0.635  0.489  1.0
  O  O20  1  0.365  0.521  0.489  1.0
  O  O21  1  0.155  0.635  0.011  1.0
  O  O22  1  0.521  0.155  0.989  1.0
  O  O23  1  0.635  0.479  0.511  1.0
  O  O24  1  0.845  0.365  0.989  1.0
  O  O25  1  0.365  0.521  0.011  1.0
[/CIF]
.