The structure described by MnFeAs is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Mn(1) is bonded in a 9-coordinate geometry to four equivalent Fe(1) and five equivalent As(1) atoms. Fe(1) is bonded in a 12-coordinate geometry to four equivalent Mn(1), four equivalent Fe(1), and four equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to five equivalent Mn(1) and four equivalent Fe(1) atoms. is represented by the CIF card [CIF]
data_MnFeAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.715
_cell_length_b   3.715
_cell_length_c   5.920
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   81.716
_cell_formula_units_Z   2
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
  Mn  Mn0  1  0.500  0.000  0.322  1.0
  Mn  Mn1  1  0.000  0.500  0.678  1.0
  Fe  Fe2  1  0.500  0.500  0.000  1.0
  Fe  Fe3  1  0.000  0.000  0.000  1.0
  As  As4  1  0.500  0.000  0.749  1.0
  As  As5  1  0.000  0.500  0.251  1.0
[/CIF]
.
The structure described by MnFeAs is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Mn(1) is bonded in a 9-coordinate geometry to four equivalent Fe(1) and five equivalent As(1) atoms. Fe(1) is bonded in a 12-coordinate geometry to four equivalent Mn(1), four equivalent Fe(1), and four equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to five equivalent Mn(1) and four equivalent Fe(1) atoms. is represented by the CIF card [CIF]
data_MnFeAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.715
_cell_length_b   3.715
_cell_length_c   5.920
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   81.716
_cell_formula_units_Z   2
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
  Mn  Mn0  1  0.500  0.000  0.322  1.0
  Mn  Mn1  1  0.000  0.500  0.678  1.0
  Fe  Fe2  1  0.500  0.500  0.000  1.0
  Fe  Fe3  1  0.000  0.000  0.000  1.0
  As  As4  1  0.500  0.000  0.749  1.0
  As  As5  1  0.000  0.500  0.251  1.0
[/CIF]
.