The material described by K2Pr4O2Cl9 crystallizes in the monoclinic P2_1/m space group. K(1) is bonded in a 5-coordinate geometry to one Cl(2), two equivalent Cl(1), and two equivalent Cl(4) atoms. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), one Cl(5), one Cl(6), two equivalent Cl(2), and two equivalent Cl(4) atoms. In the second Pr site, Pr(2) is bonded in a 2-coordinate geometry to two equivalent O(1), one Cl(1), one Cl(3), one Cl(6), two equivalent Cl(2), and two equivalent Cl(4) atoms. In the third Pr site, Pr(3) is bonded in a 8-coordinate geometry to two equivalent O(1), one Cl(3), one Cl(5), two equivalent Cl(1), and two equivalent Cl(4) atoms. O(1) is bonded to one Pr(1), one Pr(3), and two equivalent Pr(2) atoms to form OPr4 tetrahedra that share corners with two equivalent Cl(1)K2Pr2 trigonal pyramids, corners with four equivalent Cl(2)KPr3 trigonal pyramids, edges with two equivalent O(1)Pr4 tetrahedra,  an edgeedge with one Cl(1)K2Pr2 trigonal pyramid, and  an edgeedge with one Cl(2)KPr3 trigonal pyramid. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to two equivalent K(1), one Pr(2), and one Pr(3) atom to form distorted ClK2Pr2 trigonal pyramids that share corners with two equivalent O(1)Pr4 tetrahedra,  a cornercorner with one Cl(1)K2Pr2 trigonal pyramid, corners with two equivalent Cl(2)KPr3 trigonal pyramids,  an edgeedge with one O(1)Pr4 tetrahedra,  an edgeedge with one Cl(1)K2Pr2 trigonal pyramid, and  an edgeedge with one Cl(2)KPr3 trigonal pyramid. In the second Cl site, Cl(2) is bonded to one K(1), one Pr(1), and two equivalent Pr(2) atoms to form distorted ClKPr3 trigonal pyramids that share corners with four equivalent O(1)Pr4 tetrahedra,  a cornercorner with one Cl(2)KPr3 trigonal pyramid, corners with two equivalent Cl(1)K2Pr2 trigonal pyramids,  an edgeedge with one O(1)Pr4 tetrahedra,  an edgeedge with one Cl(1)K2Pr2 trigonal pyramid, and  an edgeedge with one Cl(2)KPr3 trigonal pyramid. In the third Cl site, Cl(3) is bonded in a 3-coordinate geometry to one Pr(3) and two equivalent Pr(2) atoms. In the fourth Cl site, Cl(4) is bonded in a 6-coordinate geometry to two equivalent K(1), one Pr(1), one Pr(3), and two equivalent Pr(2) atoms. In the fifth Cl site, Cl(5) is bonded in a distorted linear geometry to one Pr(1) and one Pr(3) atom. In the sixth Cl site, Cl(6) is bonded in a 3-coordinate geometry to one Pr(1) and two equivalent Pr(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Pr4Cl9O2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.497
_cell_length_b   8.479
_cell_length_c   9.594
_cell_angle_alpha   75.561
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   905.759
_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
  K  K0  1  0.452  0.761  0.447  1.0
  K  K1  1  0.952  0.239  0.553  1.0
  K  K2  1  0.548  0.239  0.553  1.0
  K  K3  1  0.048  0.761  0.447  1.0
  Pr  Pr4  1  0.750  0.618  0.161  1.0
  Pr  Pr5  1  0.250  0.382  0.839  1.0
  Pr  Pr6  1  0.457  0.716  0.956  1.0
  Pr  Pr7  1  0.957  0.284  0.044  1.0
  Pr  Pr8  1  0.543  0.284  0.044  1.0
  Pr  Pr9  1  0.250  0.387  0.214  1.0
  Pr  Pr10  1  0.750  0.613  0.786  1.0
  Pr  Pr11  1  0.043  0.716  0.956  1.0
  Cl  Cl12  1  0.415  0.122  0.300  1.0
  Cl  Cl13  1  0.093  0.106  0.876  1.0
  Cl  Cl14  1  0.250  0.748  0.134  1.0
  Cl  Cl15  1  0.750  0.252  0.866  1.0
  Cl  Cl16  1  0.500  0.510  0.277  1.0
  Cl  Cl17  1  0.585  0.878  0.700  1.0
  Cl  Cl18  1  0.250  0.400  0.522  1.0
  Cl  Cl19  1  0.750  0.600  0.478  1.0
  Cl  Cl20  1  0.085  0.122  0.300  1.0
  Cl  Cl21  1  0.907  0.894  0.124  1.0
  Cl  Cl22  1  0.000  0.490  0.723  1.0
  Cl  Cl23  1  0.407  0.106  0.876  1.0
  Cl  Cl24  1  0.500  0.490  0.723  1.0
  Cl  Cl25  1  0.593  0.894  0.124  1.0
  Cl  Cl26  1  0.915  0.878  0.700  1.0
  Cl  Cl27  1  1.000  0.510  0.277  1.0
  Cl  Cl28  1  0.250  0.747  0.757  1.0
  Cl  Cl29  1  0.750  0.253  0.243  1.0
  O  O30  1  0.122  0.452  0.011  1.0
  O  O31  1  0.878  0.548  0.989  1.0
  O  O32  1  0.378  0.452  0.011  1.0
  O  O33  1  0.622  0.548  0.989  1.0
[/CIF]
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The material described by K2Pr4O2Cl9 crystallizes in the monoclinic P2_1/m space group. K(1) is bonded in a 5-coordinate geometry to one Cl(2), two equivalent Cl(1), and two equivalent Cl(4) atoms. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), one Cl(5), one Cl(6), two equivalent Cl(2), and two equivalent Cl(4) atoms. In the second Pr site, Pr(2) is bonded in a 2-coordinate geometry to two equivalent O(1), one Cl(1), one Cl(3), one Cl(6), two equivalent Cl(2), and two equivalent Cl(4) atoms. In the third Pr site, Pr(3) is bonded in a 8-coordinate geometry to two equivalent O(1), one Cl(3), one Cl(5), two equivalent Cl(1), and two equivalent Cl(4) atoms. O(1) is bonded to one Pr(1), one Pr(3), and two equivalent Pr(2) atoms to form OPr4 tetrahedra that share corners with two equivalent Cl(1)K2Pr2 trigonal pyramids, corners with four equivalent Cl(2)KPr3 trigonal pyramids, edges with two equivalent O(1)Pr4 tetrahedra,  an edgeedge with one Cl(1)K2Pr2 trigonal pyramid, and  an edgeedge with one Cl(2)KPr3 trigonal pyramid. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to two equivalent K(1), one Pr(2), and one Pr(3) atom to form distorted ClK2Pr2 trigonal pyramids that share corners with two equivalent O(1)Pr4 tetrahedra,  a cornercorner with one Cl(1)K2Pr2 trigonal pyramid, corners with two equivalent Cl(2)KPr3 trigonal pyramids,  an edgeedge with one O(1)Pr4 tetrahedra,  an edgeedge with one Cl(1)K2Pr2 trigonal pyramid, and  an edgeedge with one Cl(2)KPr3 trigonal pyramid. In the second Cl site, Cl(2) is bonded to one K(1), one Pr(1), and two equivalent Pr(2) atoms to form distorted ClKPr3 trigonal pyramids that share corners with four equivalent O(1)Pr4 tetrahedra,  a cornercorner with one Cl(2)KPr3 trigonal pyramid, corners with two equivalent Cl(1)K2Pr2 trigonal pyramids,  an edgeedge with one O(1)Pr4 tetrahedra,  an edgeedge with one Cl(1)K2Pr2 trigonal pyramid, and  an edgeedge with one Cl(2)KPr3 trigonal pyramid. In the third Cl site, Cl(3) is bonded in a 3-coordinate geometry to one Pr(3) and two equivalent Pr(2) atoms. In the fourth Cl site, Cl(4) is bonded in a 6-coordinate geometry to two equivalent K(1), one Pr(1), one Pr(3), and two equivalent Pr(2) atoms. In the fifth Cl site, Cl(5) is bonded in a distorted linear geometry to one Pr(1) and one Pr(3) atom. In the sixth Cl site, Cl(6) is bonded in a 3-coordinate geometry to one Pr(1) and two equivalent Pr(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Pr4Cl9O2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.497
_cell_length_b   8.479
_cell_length_c   9.594
_cell_angle_alpha   75.561
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   905.759
_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
  K  K0  1  0.452  0.761  0.447  1.0
  K  K1  1  0.952  0.239  0.553  1.0
  K  K2  1  0.548  0.239  0.553  1.0
  K  K3  1  0.048  0.761  0.447  1.0
  Pr  Pr4  1  0.750  0.618  0.161  1.0
  Pr  Pr5  1  0.250  0.382  0.839  1.0
  Pr  Pr6  1  0.457  0.716  0.956  1.0
  Pr  Pr7  1  0.957  0.284  0.044  1.0
  Pr  Pr8  1  0.543  0.284  0.044  1.0
  Pr  Pr9  1  0.250  0.387  0.214  1.0
  Pr  Pr10  1  0.750  0.613  0.786  1.0
  Pr  Pr11  1  0.043  0.716  0.956  1.0
  Cl  Cl12  1  0.415  0.122  0.300  1.0
  Cl  Cl13  1  0.093  0.106  0.876  1.0
  Cl  Cl14  1  0.250  0.748  0.134  1.0
  Cl  Cl15  1  0.750  0.252  0.866  1.0
  Cl  Cl16  1  0.500  0.510  0.277  1.0
  Cl  Cl17  1  0.585  0.878  0.700  1.0
  Cl  Cl18  1  0.250  0.400  0.522  1.0
  Cl  Cl19  1  0.750  0.600  0.478  1.0
  Cl  Cl20  1  0.085  0.122  0.300  1.0
  Cl  Cl21  1  0.907  0.894  0.124  1.0
  Cl  Cl22  1  0.000  0.490  0.723  1.0
  Cl  Cl23  1  0.407  0.106  0.876  1.0
  Cl  Cl24  1  0.500  0.490  0.723  1.0
  Cl  Cl25  1  0.593  0.894  0.124  1.0
  Cl  Cl26  1  0.915  0.878  0.700  1.0
  Cl  Cl27  1  1.000  0.510  0.277  1.0
  Cl  Cl28  1  0.250  0.747  0.757  1.0
  Cl  Cl29  1  0.750  0.253  0.243  1.0
  O  O30  1  0.122  0.452  0.011  1.0
  O  O31  1  0.878  0.548  0.989  1.0
  O  O32  1  0.378  0.452  0.011  1.0
  O  O33  1  0.622  0.548  0.989  1.0
[/CIF]
.