The material described by NH4I is Silicon tetrafluoride-derived structured and crystallizes in the orthorhombic Imm2 space group. The structure is zero-dimensional and consists of two ammonium molecules and two hydriodic acid atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_H4IN
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.039
_cell_length_b   5.144
_cell_length_c   5.144
_cell_angle_alpha   61.800
_cell_angle_beta   60.670
_cell_angle_gamma   60.670
_symmetry_Int_Tables_number   1
_cell_volume   96.476
_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
  H  H0  1  0.130  0.841  0.159  1.0
  H  H1  1  0.130  0.159  0.841  1.0
  H  H2  1  0.778  0.117  0.117  1.0
  H  H3  1  0.012  0.883  0.883  1.0
  I  I4  1  0.490  0.500  0.500  1.0
  N  N5  1  0.009  0.000  0.000  1.0
[/CIF]
.
The material described by NH4I is Silicon tetrafluoride-derived structured and crystallizes in the orthorhombic Imm2 space group. The structure is zero-dimensional and consists of two ammonium molecules and two hydriodic acid atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_H4IN
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.039
_cell_length_b   5.144
_cell_length_c   5.144
_cell_angle_alpha   61.800
_cell_angle_beta   60.670
_cell_angle_gamma   60.670
_symmetry_Int_Tables_number   1
_cell_volume   96.476
_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
  H  H0  1  0.130  0.841  0.159  1.0
  H  H1  1  0.130  0.159  0.841  1.0
  H  H2  1  0.778  0.117  0.117  1.0
  H  H3  1  0.012  0.883  0.883  1.0
  I  I4  1  0.490  0.500  0.500  1.0
  N  N5  1  0.009  0.000  0.000  1.0
[/CIF]
.