The material described by KPbCr2F9 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 11-coordinate geometry to one F(5), two equivalent F(2), two equivalent F(4), two equivalent F(6), and four equivalent F(3) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one F(2), one F(6), two equivalent F(1), and two equivalent F(3) atoms to form corner-sharing CrF6 octahedra. The corner-sharing octahedral tilt angles range from 24-35°. In the second Cr site, Cr(2) is bonded to one F(2), one F(5), two equivalent F(1), and two equivalent F(4) atoms to form corner-sharing CrF6 octahedra. The corner-sharing octahedral tilt angles range from 24-35°. Pb(1) is bonded in a 5-coordinate geometry to one F(6), two equivalent F(3), and two equivalent F(4) atoms. There are six inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the second F site, F(2) is bonded in a bent 150 degrees geometry to two equivalent K(1), one Cr(1), and one Cr(2) atom. In the third F site, F(3) is bonded in a distorted single-bond geometry to two equivalent K(1), one Cr(1), and one Pb(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to one K(1), one Cr(2), and one Pb(1) atom. In the fifth F site, F(5) is bonded in a distorted bent 120 degrees geometry to one K(1) and one Cr(2) atom. In the sixth F site, F(6) is bonded in a 1-coordinate geometry to two equivalent K(1), one Cr(1), and one Pb(1) atom. is represented by the CIF file [CIF]
data_KCr2PbF9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.532
_cell_length_b   10.016
_cell_length_c   14.233
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   788.595
_cell_formula_units_Z   4
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  0.250  0.730  0.300  1.0
  K  K1  1  0.250  0.230  0.200  1.0
  K  K2  1  0.750  0.770  0.800  1.0
  K  K3  1  0.750  0.270  0.700  1.0
  Cr  Cr4  1  0.250  0.066  0.845  1.0
  Cr  Cr5  1  0.250  0.566  0.655  1.0
  Cr  Cr6  1  0.750  0.231  0.992  1.0
  Cr  Cr7  1  0.750  0.731  0.508  1.0
  Cr  Cr8  1  0.250  0.769  0.008  1.0
  Cr  Cr9  1  0.750  0.934  0.155  1.0
  Cr  Cr10  1  0.250  0.269  0.492  1.0
  Cr  Cr11  1  0.750  0.434  0.345  1.0
  Pb  Pb12  1  0.250  0.448  0.889  1.0
  Pb  Pb13  1  0.250  0.948  0.611  1.0
  Pb  Pb14  1  0.750  0.552  0.111  1.0
  Pb  Pb15  1  0.750  0.052  0.389  1.0
  F  F16  1  0.002  0.617  0.563  1.0
  F  F17  1  0.250  0.381  0.607  1.0
  F  F18  1  0.498  0.117  0.937  1.0
  F  F19  1  0.486  0.516  0.748  1.0
  F  F20  1  0.986  0.984  0.248  1.0
  F  F21  1  0.009  0.654  0.951  1.0
  F  F22  1  0.002  0.117  0.937  1.0
  F  F23  1  0.250  0.152  0.386  1.0
  F  F24  1  0.502  0.383  0.437  1.0
  F  F25  1  0.750  0.256  0.294  1.0
  F  F26  1  0.991  0.846  0.451  1.0
  F  F27  1  0.250  0.244  0.794  1.0
  F  F28  1  0.750  0.756  0.206  1.0
  F  F29  1  0.491  0.654  0.951  1.0
  F  F30  1  0.509  0.346  0.049  1.0
  F  F31  1  0.998  0.883  0.063  1.0
  F  F32  1  0.509  0.846  0.451  1.0
  F  F33  1  0.502  0.883  0.063  1.0
  F  F34  1  0.514  0.484  0.252  1.0
  F  F35  1  0.750  0.348  0.886  1.0
  F  F36  1  0.750  0.119  0.107  1.0
  F  F37  1  0.514  0.984  0.248  1.0
  F  F38  1  0.009  0.154  0.549  1.0
  F  F39  1  0.014  0.516  0.748  1.0
  F  F40  1  0.250  0.881  0.893  1.0
  F  F41  1  0.991  0.346  0.049  1.0
  F  F42  1  0.998  0.383  0.437  1.0
  F  F43  1  0.491  0.154  0.549  1.0
  F  F44  1  0.250  0.652  0.114  1.0
  F  F45  1  0.750  0.848  0.614  1.0
  F  F46  1  0.250  0.744  0.706  1.0
  F  F47  1  0.750  0.619  0.393  1.0
  F  F48  1  0.486  0.016  0.752  1.0
  F  F49  1  0.498  0.617  0.563  1.0
  F  F50  1  0.014  0.016  0.752  1.0
  F  F51  1  0.986  0.484  0.252  1.0
[/CIF]
.
The material described by KPbCr2F9 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 11-coordinate geometry to one F(5), two equivalent F(2), two equivalent F(4), two equivalent F(6), and four equivalent F(3) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one F(2), one F(6), two equivalent F(1), and two equivalent F(3) atoms to form corner-sharing CrF6 octahedra. The corner-sharing octahedral tilt angles range from 24-35°. In the second Cr site, Cr(2) is bonded to one F(2), one F(5), two equivalent F(1), and two equivalent F(4) atoms to form corner-sharing CrF6 octahedra. The corner-sharing octahedral tilt angles range from 24-35°. Pb(1) is bonded in a 5-coordinate geometry to one F(6), two equivalent F(3), and two equivalent F(4) atoms. There are six inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the second F site, F(2) is bonded in a bent 150 degrees geometry to two equivalent K(1), one Cr(1), and one Cr(2) atom. In the third F site, F(3) is bonded in a distorted single-bond geometry to two equivalent K(1), one Cr(1), and one Pb(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to one K(1), one Cr(2), and one Pb(1) atom. In the fifth F site, F(5) is bonded in a distorted bent 120 degrees geometry to one K(1) and one Cr(2) atom. In the sixth F site, F(6) is bonded in a 1-coordinate geometry to two equivalent K(1), one Cr(1), and one Pb(1) atom. is represented by the CIF file [CIF]
data_KCr2PbF9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.532
_cell_length_b   10.016
_cell_length_c   14.233
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   788.595
_cell_formula_units_Z   4
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  0.250  0.730  0.300  1.0
  K  K1  1  0.250  0.230  0.200  1.0
  K  K2  1  0.750  0.770  0.800  1.0
  K  K3  1  0.750  0.270  0.700  1.0
  Cr  Cr4  1  0.250  0.066  0.845  1.0
  Cr  Cr5  1  0.250  0.566  0.655  1.0
  Cr  Cr6  1  0.750  0.231  0.992  1.0
  Cr  Cr7  1  0.750  0.731  0.508  1.0
  Cr  Cr8  1  0.250  0.769  0.008  1.0
  Cr  Cr9  1  0.750  0.934  0.155  1.0
  Cr  Cr10  1  0.250  0.269  0.492  1.0
  Cr  Cr11  1  0.750  0.434  0.345  1.0
  Pb  Pb12  1  0.250  0.448  0.889  1.0
  Pb  Pb13  1  0.250  0.948  0.611  1.0
  Pb  Pb14  1  0.750  0.552  0.111  1.0
  Pb  Pb15  1  0.750  0.052  0.389  1.0
  F  F16  1  0.002  0.617  0.563  1.0
  F  F17  1  0.250  0.381  0.607  1.0
  F  F18  1  0.498  0.117  0.937  1.0
  F  F19  1  0.486  0.516  0.748  1.0
  F  F20  1  0.986  0.984  0.248  1.0
  F  F21  1  0.009  0.654  0.951  1.0
  F  F22  1  0.002  0.117  0.937  1.0
  F  F23  1  0.250  0.152  0.386  1.0
  F  F24  1  0.502  0.383  0.437  1.0
  F  F25  1  0.750  0.256  0.294  1.0
  F  F26  1  0.991  0.846  0.451  1.0
  F  F27  1  0.250  0.244  0.794  1.0
  F  F28  1  0.750  0.756  0.206  1.0
  F  F29  1  0.491  0.654  0.951  1.0
  F  F30  1  0.509  0.346  0.049  1.0
  F  F31  1  0.998  0.883  0.063  1.0
  F  F32  1  0.509  0.846  0.451  1.0
  F  F33  1  0.502  0.883  0.063  1.0
  F  F34  1  0.514  0.484  0.252  1.0
  F  F35  1  0.750  0.348  0.886  1.0
  F  F36  1  0.750  0.119  0.107  1.0
  F  F37  1  0.514  0.984  0.248  1.0
  F  F38  1  0.009  0.154  0.549  1.0
  F  F39  1  0.014  0.516  0.748  1.0
  F  F40  1  0.250  0.881  0.893  1.0
  F  F41  1  0.991  0.346  0.049  1.0
  F  F42  1  0.998  0.383  0.437  1.0
  F  F43  1  0.491  0.154  0.549  1.0
  F  F44  1  0.250  0.652  0.114  1.0
  F  F45  1  0.750  0.848  0.614  1.0
  F  F46  1  0.250  0.744  0.706  1.0
  F  F47  1  0.750  0.619  0.393  1.0
  F  F48  1  0.486  0.016  0.752  1.0
  F  F49  1  0.498  0.617  0.563  1.0
  F  F50  1  0.014  0.016  0.752  1.0
  F  F51  1  0.986  0.484  0.252  1.0
[/CIF]
.