The material structure described by K3NO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(2), one O(3), and four equivalent O(1) atoms. N(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(2), four equivalent K(1), and one N(1) atom. In the second O site, O(2) is bonded to one K(2), four equivalent K(1), and one N(1) atom to form distorted corner-sharing OK5N octahedra. The corner-sharing octahedral tilt angles are 51°. In the third O site, O(3) is bonded in a 6-coordinate geometry to one K(2), four equivalent K(1), and one N(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K3NO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.679
_cell_length_b   7.923
_cell_length_c   10.879
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   489.480
_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  0.675  0.492  0.356  1.0
  K  K1  1  0.175  0.508  0.144  1.0
  K  K2  1  0.325  0.992  0.644  1.0
  K  K3  1  0.825  0.008  0.856  1.0
  K  K4  1  0.325  0.508  0.644  1.0
  K  K5  1  0.825  0.492  0.856  1.0
  K  K6  1  0.675  0.008  0.356  1.0
  K  K7  1  0.175  0.992  0.144  1.0
  K  K8  1  0.875  0.750  0.568  1.0
  K  K9  1  0.375  0.250  0.932  1.0
  K  K10  1  0.125  0.250  0.432  1.0
  K  K11  1  0.625  0.750  0.068  1.0
  N  N12  1  0.287  0.750  0.384  1.0
  N  N13  1  0.213  0.750  0.884  1.0
  N  N14  1  0.713  0.250  0.616  1.0
  N  N15  1  0.787  0.250  0.116  1.0
  O  O16  1  0.351  0.605  0.892  1.0
  O  O17  1  0.851  0.395  0.608  1.0
  O  O18  1  0.649  0.105  0.108  1.0
  O  O19  1  0.149  0.895  0.392  1.0
  O  O20  1  0.092  0.750  0.772  1.0
  O  O21  1  0.592  0.250  0.728  1.0
  O  O22  1  0.908  0.250  0.228  1.0
  O  O23  1  0.408  0.750  0.272  1.0
  O  O24  1  0.649  0.395  0.108  1.0
  O  O25  1  0.851  0.105  0.608  1.0
  O  O26  1  0.351  0.895  0.892  1.0
  O  O27  1  0.149  0.605  0.392  1.0
  O  O28  1  0.451  0.750  0.480  1.0
  O  O29  1  0.951  0.250  0.020  1.0
  O  O30  1  0.549  0.250  0.520  1.0
  O  O31  1  0.049  0.750  0.980  1.0
[/CIF]
.
The material structure described by K3NO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(2), one O(3), and four equivalent O(1) atoms. N(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(2), four equivalent K(1), and one N(1) atom. In the second O site, O(2) is bonded to one K(2), four equivalent K(1), and one N(1) atom to form distorted corner-sharing OK5N octahedra. The corner-sharing octahedral tilt angles are 51°. In the third O site, O(3) is bonded in a 6-coordinate geometry to one K(2), four equivalent K(1), and one N(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K3NO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.679
_cell_length_b   7.923
_cell_length_c   10.879
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   489.480
_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  0.675  0.492  0.356  1.0
  K  K1  1  0.175  0.508  0.144  1.0
  K  K2  1  0.325  0.992  0.644  1.0
  K  K3  1  0.825  0.008  0.856  1.0
  K  K4  1  0.325  0.508  0.644  1.0
  K  K5  1  0.825  0.492  0.856  1.0
  K  K6  1  0.675  0.008  0.356  1.0
  K  K7  1  0.175  0.992  0.144  1.0
  K  K8  1  0.875  0.750  0.568  1.0
  K  K9  1  0.375  0.250  0.932  1.0
  K  K10  1  0.125  0.250  0.432  1.0
  K  K11  1  0.625  0.750  0.068  1.0
  N  N12  1  0.287  0.750  0.384  1.0
  N  N13  1  0.213  0.750  0.884  1.0
  N  N14  1  0.713  0.250  0.616  1.0
  N  N15  1  0.787  0.250  0.116  1.0
  O  O16  1  0.351  0.605  0.892  1.0
  O  O17  1  0.851  0.395  0.608  1.0
  O  O18  1  0.649  0.105  0.108  1.0
  O  O19  1  0.149  0.895  0.392  1.0
  O  O20  1  0.092  0.750  0.772  1.0
  O  O21  1  0.592  0.250  0.728  1.0
  O  O22  1  0.908  0.250  0.228  1.0
  O  O23  1  0.408  0.750  0.272  1.0
  O  O24  1  0.649  0.395  0.108  1.0
  O  O25  1  0.851  0.105  0.608  1.0
  O  O26  1  0.351  0.895  0.892  1.0
  O  O27  1  0.149  0.605  0.392  1.0
  O  O28  1  0.451  0.750  0.480  1.0
  O  O29  1  0.951  0.250  0.020  1.0
  O  O30  1  0.549  0.250  0.520  1.0
  O  O31  1  0.049  0.750  0.980  1.0
[/CIF]
.