The structure described by KFeAs2 crystallizes in the tetragonal I-4m2 space group. K(1) is bonded in a distorted body-centered cubic geometry to eight equivalent As(1) atoms. Fe(1) is bonded to four equivalent As(1) atoms to form distorted corner-sharing FeAs4 tetrahedra. As(1) is bonded in a distorted bent 120 degrees geometry to four equivalent K(1) and two equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KFeAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.970
_cell_length_b   6.970
_cell_length_c   6.970
_cell_angle_alpha   146.989
_cell_angle_beta   146.989
_cell_angle_gamma   47.381
_symmetry_Int_Tables_number   1
_cell_volume   100.133
_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  0.000  0.000  0.000  1.0
  Fe  Fe1  1  0.250  0.750  0.500  1.0
  As  As2  1  0.669  0.669  0.000  1.0
  As  As3  1  0.331  0.331  0.000  1.0
[/CIF]
.
The structure described by KFeAs2 crystallizes in the tetragonal I-4m2 space group. K(1) is bonded in a distorted body-centered cubic geometry to eight equivalent As(1) atoms. Fe(1) is bonded to four equivalent As(1) atoms to form distorted corner-sharing FeAs4 tetrahedra. As(1) is bonded in a distorted bent 120 degrees geometry to four equivalent K(1) and two equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KFeAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.970
_cell_length_b   6.970
_cell_length_c   6.970
_cell_angle_alpha   146.989
_cell_angle_beta   146.989
_cell_angle_gamma   47.381
_symmetry_Int_Tables_number   1
_cell_volume   100.133
_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  0.000  0.000  0.000  1.0
  Fe  Fe1  1  0.250  0.750  0.500  1.0
  As  As2  1  0.669  0.669  0.000  1.0
  As  As3  1  0.331  0.331  0.000  1.0
[/CIF]
.