The structure described by K2Fe(CO)4 crystallizes in the orthorhombic Fddd space group. K(1) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. Fe(1) is bonded in a tetrahedral geometry to four equivalent C(1) atoms. C(1) is bonded in a linear geometry to one Fe(1) and one O(1) atom. O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one C(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Fe(CO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.164
_cell_length_b   12.145
_cell_length_c   6.455
_cell_angle_alpha   84.189
_cell_angle_beta   66.614
_cell_angle_gamma   29.197
_symmetry_Int_Tables_number   1
_cell_volume   386.602
_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
  K  K0  1  0.177  0.177  0.823  1.0
  K  K1  1  0.823  0.823  0.177  1.0
  K  K2  1  0.427  0.427  0.073  1.0
  K  K3  1  0.073  0.073  0.427  1.0
  Fe  Fe4  1  0.500  0.500  0.500  1.0
  Fe  Fe5  1  0.750  0.750  0.750  1.0
  C  C6  1  0.063  0.524  0.583  1.0
  C  C7  1  0.726  0.187  0.420  1.0
  C  C8  1  0.420  0.667  0.726  1.0
  C  C9  1  0.667  0.420  0.187  1.0
  C  C10  1  0.583  0.830  0.063  1.0
  C  C11  1  0.187  0.726  0.667  1.0
  C  C12  1  0.524  0.063  0.830  1.0
  C  C13  1  0.830  0.583  0.524  1.0
  O  O14  1  0.367  0.281  0.898  1.0
  O  O15  1  0.454  0.898  0.281  1.0
  O  O16  1  0.883  0.969  0.352  1.0
  O  O17  1  0.352  0.796  0.883  1.0
  O  O18  1  0.796  0.352  0.969  1.0
  O  O19  1  0.898  0.454  0.367  1.0
  O  O20  1  0.969  0.883  0.796  1.0
  O  O21  1  0.281  0.367  0.454  1.0
[/CIF]
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The structure described by K2Fe(CO)4 crystallizes in the orthorhombic Fddd space group. K(1) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. Fe(1) is bonded in a tetrahedral geometry to four equivalent C(1) atoms. C(1) is bonded in a linear geometry to one Fe(1) and one O(1) atom. O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one C(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Fe(CO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.164
_cell_length_b   12.145
_cell_length_c   6.455
_cell_angle_alpha   84.189
_cell_angle_beta   66.614
_cell_angle_gamma   29.197
_symmetry_Int_Tables_number   1
_cell_volume   386.602
_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
  K  K0  1  0.177  0.177  0.823  1.0
  K  K1  1  0.823  0.823  0.177  1.0
  K  K2  1  0.427  0.427  0.073  1.0
  K  K3  1  0.073  0.073  0.427  1.0
  Fe  Fe4  1  0.500  0.500  0.500  1.0
  Fe  Fe5  1  0.750  0.750  0.750  1.0
  C  C6  1  0.063  0.524  0.583  1.0
  C  C7  1  0.726  0.187  0.420  1.0
  C  C8  1  0.420  0.667  0.726  1.0
  C  C9  1  0.667  0.420  0.187  1.0
  C  C10  1  0.583  0.830  0.063  1.0
  C  C11  1  0.187  0.726  0.667  1.0
  C  C12  1  0.524  0.063  0.830  1.0
  C  C13  1  0.830  0.583  0.524  1.0
  O  O14  1  0.367  0.281  0.898  1.0
  O  O15  1  0.454  0.898  0.281  1.0
  O  O16  1  0.883  0.969  0.352  1.0
  O  O17  1  0.352  0.796  0.883  1.0
  O  O18  1  0.796  0.352  0.969  1.0
  O  O19  1  0.898  0.454  0.367  1.0
  O  O20  1  0.969  0.883  0.796  1.0
  O  O21  1  0.281  0.367  0.454  1.0
[/CIF]
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