The compound described by K4Gd2C3O9F4 crystallizes in the monoclinic P2_1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a distorted hexagonal bipyramidal geometry to one O(2), one O(3), one O(4), one O(6), one O(7), one O(8), one F(1), and one F(2) atom. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(7), one O(8), one F(4), and two equivalent F(2) atoms. In the third K site, K(3) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(4), one O(6), one O(7), one O(9), and two equivalent F(1) atoms. In the fourth K site, K(4) is bonded in a 9-coordinate geometry to one O(2), one O(3), one O(5), one O(6), one O(8), one O(9), one F(1), one F(2), and one F(3) atom. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(6), two equivalent O(9), one F(1), one F(3), and one F(4) atom. In the second Gd site, Gd(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(7), one O(8), two equivalent O(5), one F(2), one F(3), and one F(4) atom. There are three inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(4), one O(6), and one O(9) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(5), one O(7), and one O(8) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(2), one K(3), one Gd(1), one Gd(2), and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(4), one Gd(2), and one C(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one K(1), one K(3), one K(4), one Gd(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(3), one Gd(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(2), one K(4), two equivalent Gd(2), and one C(3) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one K(3), one K(4), one Gd(1), and one C(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(3), one Gd(2), and one C(3) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(4), one Gd(2), and one C(3) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one K(3), one K(4), two equivalent Gd(1), and one C(2) atom. There are four inequivalent F sites. In the first F site, F(1) is bonded to one K(1), one K(4), two equivalent K(3), and one Gd(1) atom to form distorted corner-sharing FK4Gd trigonal bipyramids. In the second F site, F(2) is bonded to one K(1), one K(4), two equivalent K(2), and one Gd(2) atom to form distorted corner-sharing FK4Gd trigonal bipyramids. In the third F site, F(3) is bonded in a trigonal non-coplanar geometry to one K(4), one Gd(1), and one Gd(2) atom. In the fourth F site, F(4) is bonded in a trigonal non-coplanar geometry to one K(2), one Gd(1), and one Gd(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K4Gd2C3O9F4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.156
_cell_length_b   7.004
_cell_length_c   10.658
_cell_angle_alpha   79.124
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   671.169
_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  1.000  0.999  0.750  1.0
  K  K1  1  0.500  0.001  0.250  1.0
  K  K2  1  0.311  0.880  0.562  1.0
  K  K3  1  0.817  0.864  0.064  1.0
  K  K4  1  0.378  0.502  0.248  1.0
  K  K5  1  0.878  0.498  0.752  1.0
  K  K6  1  0.317  0.136  0.936  1.0
  K  K7  1  0.811  0.120  0.438  1.0
  Gd  Gd8  1  0.494  0.644  0.895  1.0
  Gd  Gd9  1  0.003  0.644  0.392  1.0
  Gd  Gd10  1  0.994  0.356  0.105  1.0
  Gd  Gd11  1  0.503  0.356  0.608  1.0
  C  C12  1  0.142  0.011  0.257  1.0
  C  C13  1  0.642  0.989  0.743  1.0
  C  C14  1  0.178  0.647  0.929  1.0
  C  C15  1  0.176  0.352  0.562  1.0
  C  C16  1  0.676  0.648  0.438  1.0
  C  C17  1  0.678  0.353  0.071  1.0
  O  O18  1  0.000  0.998  0.250  1.0
  O  O19  1  0.214  0.873  0.328  1.0
  O  O20  1  0.500  0.002  0.750  1.0
  O  O21  1  0.706  0.837  0.809  1.0
  O  O22  1  0.246  0.799  0.870  1.0
  O  O23  1  0.242  0.487  0.482  1.0
  O  O24  1  0.036  0.640  0.937  1.0
  O  O25  1  0.751  0.773  0.358  1.0
  O  O26  1  0.034  0.347  0.559  1.0
  O  O27  1  0.254  0.496  0.982  1.0
  O  O28  1  0.754  0.504  0.018  1.0
  O  O29  1  0.534  0.653  0.441  1.0
  O  O30  1  0.536  0.360  0.063  1.0
  O  O31  1  0.742  0.513  0.518  1.0
  O  O32  1  0.206  0.163  0.191  1.0
  O  O33  1  0.251  0.227  0.642  1.0
  O  O34  1  0.714  0.127  0.672  1.0
  O  O35  1  0.746  0.201  0.130  1.0
  F  F36  1  0.500  0.808  0.056  1.0
  F  F37  1  0.003  0.803  0.556  1.0
  F  F38  1  0.107  0.591  0.202  1.0
  F  F39  1  0.382  0.572  0.712  1.0
  F  F40  1  0.607  0.409  0.798  1.0
  F  F41  1  0.882  0.428  0.288  1.0
  F  F42  1  0.000  0.192  0.944  1.0
  F  F43  1  0.503  0.197  0.444  1.0
[/CIF]
.
The compound described by K4Gd2C3O9F4 crystallizes in the monoclinic P2_1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a distorted hexagonal bipyramidal geometry to one O(2), one O(3), one O(4), one O(6), one O(7), one O(8), one F(1), and one F(2) atom. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(7), one O(8), one F(4), and two equivalent F(2) atoms. In the third K site, K(3) is bonded in a 8-coordinate geometry to one O(1), one O(3), one O(4), one O(6), one O(7), one O(9), and two equivalent F(1) atoms. In the fourth K site, K(4) is bonded in a 9-coordinate geometry to one O(2), one O(3), one O(5), one O(6), one O(8), one O(9), one F(1), one F(2), and one F(3) atom. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(6), two equivalent O(9), one F(1), one F(3), and one F(4) atom. In the second Gd site, Gd(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(7), one O(8), two equivalent O(5), one F(2), one F(3), and one F(4) atom. There are three inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(4), one O(6), and one O(9) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(5), one O(7), and one O(8) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(2), one K(3), one Gd(1), one Gd(2), and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(4), one Gd(2), and one C(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one K(1), one K(3), one K(4), one Gd(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(3), one Gd(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(2), one K(4), two equivalent Gd(2), and one C(3) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one K(3), one K(4), one Gd(1), and one C(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(3), one Gd(2), and one C(3) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one K(2), one K(4), one Gd(2), and one C(3) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one K(3), one K(4), two equivalent Gd(1), and one C(2) atom. There are four inequivalent F sites. In the first F site, F(1) is bonded to one K(1), one K(4), two equivalent K(3), and one Gd(1) atom to form distorted corner-sharing FK4Gd trigonal bipyramids. In the second F site, F(2) is bonded to one K(1), one K(4), two equivalent K(2), and one Gd(2) atom to form distorted corner-sharing FK4Gd trigonal bipyramids. In the third F site, F(3) is bonded in a trigonal non-coplanar geometry to one K(4), one Gd(1), and one Gd(2) atom. In the fourth F site, F(4) is bonded in a trigonal non-coplanar geometry to one K(2), one Gd(1), and one Gd(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K4Gd2C3O9F4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.156
_cell_length_b   7.004
_cell_length_c   10.658
_cell_angle_alpha   79.124
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   671.169
_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  1.000  0.999  0.750  1.0
  K  K1  1  0.500  0.001  0.250  1.0
  K  K2  1  0.311  0.880  0.562  1.0
  K  K3  1  0.817  0.864  0.064  1.0
  K  K4  1  0.378  0.502  0.248  1.0
  K  K5  1  0.878  0.498  0.752  1.0
  K  K6  1  0.317  0.136  0.936  1.0
  K  K7  1  0.811  0.120  0.438  1.0
  Gd  Gd8  1  0.494  0.644  0.895  1.0
  Gd  Gd9  1  0.003  0.644  0.392  1.0
  Gd  Gd10  1  0.994  0.356  0.105  1.0
  Gd  Gd11  1  0.503  0.356  0.608  1.0
  C  C12  1  0.142  0.011  0.257  1.0
  C  C13  1  0.642  0.989  0.743  1.0
  C  C14  1  0.178  0.647  0.929  1.0
  C  C15  1  0.176  0.352  0.562  1.0
  C  C16  1  0.676  0.648  0.438  1.0
  C  C17  1  0.678  0.353  0.071  1.0
  O  O18  1  0.000  0.998  0.250  1.0
  O  O19  1  0.214  0.873  0.328  1.0
  O  O20  1  0.500  0.002  0.750  1.0
  O  O21  1  0.706  0.837  0.809  1.0
  O  O22  1  0.246  0.799  0.870  1.0
  O  O23  1  0.242  0.487  0.482  1.0
  O  O24  1  0.036  0.640  0.937  1.0
  O  O25  1  0.751  0.773  0.358  1.0
  O  O26  1  0.034  0.347  0.559  1.0
  O  O27  1  0.254  0.496  0.982  1.0
  O  O28  1  0.754  0.504  0.018  1.0
  O  O29  1  0.534  0.653  0.441  1.0
  O  O30  1  0.536  0.360  0.063  1.0
  O  O31  1  0.742  0.513  0.518  1.0
  O  O32  1  0.206  0.163  0.191  1.0
  O  O33  1  0.251  0.227  0.642  1.0
  O  O34  1  0.714  0.127  0.672  1.0
  O  O35  1  0.746  0.201  0.130  1.0
  F  F36  1  0.500  0.808  0.056  1.0
  F  F37  1  0.003  0.803  0.556  1.0
  F  F38  1  0.107  0.591  0.202  1.0
  F  F39  1  0.382  0.572  0.712  1.0
  F  F40  1  0.607  0.409  0.798  1.0
  F  F41  1  0.882  0.428  0.288  1.0
  F  F42  1  0.000  0.192  0.944  1.0
  F  F43  1  0.503  0.197  0.444  1.0
[/CIF]
.