The compound described by K2BaNi(NO2)6 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(2), one O(3), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. In the second K site, K(2) is bonded in a 12-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. Ba(1) is bonded in a 12-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. Ni(1) is bonded in an octahedral geometry to one N(1), one N(2), one N(3), one N(4), one N(5), and one N(6) atom. There are six inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ni(1), one O(2), and one O(3) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Ni(1), one O(1), and one O(4) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Ni(1), one O(6), and one O(8) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Ni(1), one O(5), and one O(7) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one Ni(1), one O(10), and one O(11) atom. In the sixth N site, N(6) is bonded in a trigonal planar geometry to one Ni(1), one O(12), and one O(9) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(2), one Ba(1), and one N(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(2), one Ba(1), and one N(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(3) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(4) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(3) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(6) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(5) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(5) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(6) atom. is represented by the CIF file [CIF]
data_K2BaNi(NO2)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.624
_cell_length_b   7.810
_cell_length_c   7.927
_cell_angle_alpha   94.213
_cell_angle_beta   116.713
_cell_angle_gamma   117.355
_symmetry_Int_Tables_number   1
_cell_volume   350.427
_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  0.485  0.742  0.236  1.0
  K  K1  1  0.508  0.254  0.759  1.0
  Ba  Ba2  1  0.008  0.500  0.507  1.0
  Ni  Ni3  1  0.991  0.992  0.998  1.0
  N  N4  1  0.614  0.800  0.802  1.0
  N  N5  1  0.029  0.803  0.836  1.0
  N  N6  1  0.996  0.808  0.199  1.0
  N  N7  1  0.001  0.184  0.807  1.0
  N  N8  1  0.991  0.189  0.188  1.0
  N  N9  1  0.394  0.203  0.206  1.0
  O  O10  1  0.148  0.873  0.759  1.0
  O  O11  1  0.498  0.822  0.643  1.0
  O  O12  1  0.497  0.652  0.842  1.0
  O  O13  1  0.941  0.616  0.819  1.0
  O  O14  1  0.206  0.329  0.868  1.0
  O  O15  1  0.201  0.857  0.327  1.0
  O  O16  1  0.835  0.171  0.651  1.0
  O  O17  1  0.831  0.668  0.206  1.0
  O  O18  1  0.494  0.365  0.350  1.0
  O  O19  1  0.003  0.161  0.347  1.0
  O  O20  1  0.002  0.350  0.162  1.0
  O  O21  1  0.527  0.163  0.185  1.0
[/CIF]
.
The compound described by K2BaNi(NO2)6 crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(2), one O(3), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. In the second K site, K(2) is bonded in a 12-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. Ba(1) is bonded in a 12-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. Ni(1) is bonded in an octahedral geometry to one N(1), one N(2), one N(3), one N(4), one N(5), and one N(6) atom. There are six inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ni(1), one O(2), and one O(3) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Ni(1), one O(1), and one O(4) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Ni(1), one O(6), and one O(8) atom. In the fourth N site, N(4) is bonded in a trigonal planar geometry to one Ni(1), one O(5), and one O(7) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one Ni(1), one O(10), and one O(11) atom. In the sixth N site, N(6) is bonded in a trigonal planar geometry to one Ni(1), one O(12), and one O(9) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(2), one Ba(1), and one N(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(2), one Ba(1), and one N(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(3) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(4) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(3) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(6) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(5) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(5) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Ba(1), and one N(6) atom. is represented by the CIF file [CIF]
data_K2BaNi(NO2)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.624
_cell_length_b   7.810
_cell_length_c   7.927
_cell_angle_alpha   94.213
_cell_angle_beta   116.713
_cell_angle_gamma   117.355
_symmetry_Int_Tables_number   1
_cell_volume   350.427
_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  0.485  0.742  0.236  1.0
  K  K1  1  0.508  0.254  0.759  1.0
  Ba  Ba2  1  0.008  0.500  0.507  1.0
  Ni  Ni3  1  0.991  0.992  0.998  1.0
  N  N4  1  0.614  0.800  0.802  1.0
  N  N5  1  0.029  0.803  0.836  1.0
  N  N6  1  0.996  0.808  0.199  1.0
  N  N7  1  0.001  0.184  0.807  1.0
  N  N8  1  0.991  0.189  0.188  1.0
  N  N9  1  0.394  0.203  0.206  1.0
  O  O10  1  0.148  0.873  0.759  1.0
  O  O11  1  0.498  0.822  0.643  1.0
  O  O12  1  0.497  0.652  0.842  1.0
  O  O13  1  0.941  0.616  0.819  1.0
  O  O14  1  0.206  0.329  0.868  1.0
  O  O15  1  0.201  0.857  0.327  1.0
  O  O16  1  0.835  0.171  0.651  1.0
  O  O17  1  0.831  0.668  0.206  1.0
  O  O18  1  0.494  0.365  0.350  1.0
  O  O19  1  0.003  0.161  0.347  1.0
  O  O20  1  0.002  0.350  0.162  1.0
  O  O21  1  0.527  0.163  0.185  1.0
[/CIF]
.