The crystal structure described by K2BaNi(NO2)6 crystallizes in the monoclinic Cm space group. K(1) is bonded in a 8-coordinate geometry to one O(4), one O(5), one O(6), one O(7), two equivalent O(1), and two equivalent O(2) atoms. Ba(1) is bonded in a 12-coordinate geometry to one N(4), one N(5), two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Ni(1) is bonded in a tetrahedral geometry to one N(1), one N(2), and two equivalent N(3) atoms. There are five inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ni(1) and two equivalent O(2) atoms. In the second N site, N(2) is bonded in a trigonal planar geometry to one Ni(1) and two equivalent O(1) atoms. In the third N site, N(3) is bonded in a bent 150 degrees geometry to one Ni(1) and one O(3) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Ba(1), one O(6), and two equivalent O(4) atoms. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one Ba(1), one O(7), and two equivalent O(5) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1), one Ba(1), and one N(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(1), one Ba(1), and one N(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one N(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one Ba(1), and one N(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one Ba(1), and one N(5) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to two equivalent K(1) and one N(4) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent K(1) and one N(5) atom. is represented by the CIF file [CIF]
data_K2BaNi(NO2)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.952
_cell_length_b   7.952
_cell_length_c   8.094
_cell_angle_alpha   59.685
_cell_angle_beta   59.685
_cell_angle_gamma   86.947
_symmetry_Int_Tables_number   1
_cell_volume   367.251
_cell_formula_units_Z   1
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  0.755  0.241  0.503  1.0
  K  K1  1  0.241  0.755  0.503  1.0
  Ba  Ba2  1  0.514  0.514  0.991  1.0
  Ni  Ni3  1  0.909  0.909  0.101  1.0
  N  N4  1  0.776  0.776  0.427  1.0
  N  N5  1  0.785  0.785  0.012  1.0
  N  N6  1  0.830  0.136  0.022  1.0
  N  N7  1  0.136  0.830  0.022  1.0
  N  N8  1  0.234  0.234  0.026  1.0
  N  N9  1  0.226  0.226  0.527  1.0
  O  O10  1  0.830  0.632  0.003  1.0
  O  O11  1  0.827  0.629  0.540  1.0
  O  O12  1  0.629  0.827  0.540  1.0
  O  O13  1  0.632  0.830  0.003  1.0
  O  O14  1  0.200  0.693  0.109  1.0
  O  O15  1  0.693  0.200  0.109  1.0
  O  O16  1  0.205  0.406  0.925  1.0
  O  O17  1  0.406  0.205  0.925  1.0
  O  O18  1  0.395  0.193  0.497  1.0
  O  O19  1  0.193  0.395  0.497  1.0
  O  O20  1  0.098  0.098  0.231  1.0
  O  O21  1  0.097  0.097  0.572  1.0
[/CIF]
.
The crystal structure described by K2BaNi(NO2)6 crystallizes in the monoclinic Cm space group. K(1) is bonded in a 8-coordinate geometry to one O(4), one O(5), one O(6), one O(7), two equivalent O(1), and two equivalent O(2) atoms. Ba(1) is bonded in a 12-coordinate geometry to one N(4), one N(5), two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Ni(1) is bonded in a tetrahedral geometry to one N(1), one N(2), and two equivalent N(3) atoms. There are five inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ni(1) and two equivalent O(2) atoms. In the second N site, N(2) is bonded in a trigonal planar geometry to one Ni(1) and two equivalent O(1) atoms. In the third N site, N(3) is bonded in a bent 150 degrees geometry to one Ni(1) and one O(3) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Ba(1), one O(6), and two equivalent O(4) atoms. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one Ba(1), one O(7), and two equivalent O(5) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1), one Ba(1), and one N(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(1), one Ba(1), and one N(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one N(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one Ba(1), and one N(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one Ba(1), and one N(5) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to two equivalent K(1) and one N(4) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent K(1) and one N(5) atom. is represented by the CIF file [CIF]
data_K2BaNi(NO2)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.952
_cell_length_b   7.952
_cell_length_c   8.094
_cell_angle_alpha   59.685
_cell_angle_beta   59.685
_cell_angle_gamma   86.947
_symmetry_Int_Tables_number   1
_cell_volume   367.251
_cell_formula_units_Z   1
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  0.755  0.241  0.503  1.0
  K  K1  1  0.241  0.755  0.503  1.0
  Ba  Ba2  1  0.514  0.514  0.991  1.0
  Ni  Ni3  1  0.909  0.909  0.101  1.0
  N  N4  1  0.776  0.776  0.427  1.0
  N  N5  1  0.785  0.785  0.012  1.0
  N  N6  1  0.830  0.136  0.022  1.0
  N  N7  1  0.136  0.830  0.022  1.0
  N  N8  1  0.234  0.234  0.026  1.0
  N  N9  1  0.226  0.226  0.527  1.0
  O  O10  1  0.830  0.632  0.003  1.0
  O  O11  1  0.827  0.629  0.540  1.0
  O  O12  1  0.629  0.827  0.540  1.0
  O  O13  1  0.632  0.830  0.003  1.0
  O  O14  1  0.200  0.693  0.109  1.0
  O  O15  1  0.693  0.200  0.109  1.0
  O  O16  1  0.205  0.406  0.925  1.0
  O  O17  1  0.406  0.205  0.925  1.0
  O  O18  1  0.395  0.193  0.497  1.0
  O  O19  1  0.193  0.395  0.497  1.0
  O  O20  1  0.098  0.098  0.231  1.0
  O  O21  1  0.097  0.097  0.572  1.0
[/CIF]
.