The compound described by Er3FeGe3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 6-coordinate geometry to two equivalent Ge(2) and four equivalent Ge(1) atoms. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to three equivalent Ge(2) and four equivalent Ge(1) atoms. Fe(1) is bonded to four equivalent Ge(1) atoms to form distorted edge-sharing FeGe4 cuboctahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Er(2), four equivalent Er(1), two equivalent Fe(1), and one Ge(2) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to three equivalent Er(2), four equivalent Er(1), and two equivalent Ge(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er3FeGe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.577
_cell_length_b   5.577
_cell_length_c   13.494
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   137.295
_symmetry_Int_Tables_number   1
_cell_volume   284.685
_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
  Er  Er0  1  0.792  0.208  0.400  1.0
  Er  Er1  1  0.208  0.792  0.600  1.0
  Er  Er2  1  0.792  0.208  0.100  1.0
  Er  Er3  1  0.208  0.792  0.900  1.0
  Er  Er4  1  0.506  0.494  0.250  1.0
  Er  Er5  1  0.494  0.506  0.750  1.0
  Fe  Fe6  1  0.500  0.500  0.500  1.0
  Fe  Fe7  1  0.500  0.500  0.000  1.0
  Ge  Ge8  1  0.075  0.925  0.408  1.0
  Ge  Ge9  1  0.925  0.075  0.592  1.0
  Ge  Ge10  1  0.075  0.925  0.092  1.0
  Ge  Ge11  1  0.925  0.075  0.908  1.0
  Ge  Ge12  1  0.227  0.773  0.250  1.0
  Ge  Ge13  1  0.773  0.227  0.750  1.0
[/CIF]
.
The compound described by Er3FeGe3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 6-coordinate geometry to two equivalent Ge(2) and four equivalent Ge(1) atoms. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to three equivalent Ge(2) and four equivalent Ge(1) atoms. Fe(1) is bonded to four equivalent Ge(1) atoms to form distorted edge-sharing FeGe4 cuboctahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Er(2), four equivalent Er(1), two equivalent Fe(1), and one Ge(2) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to three equivalent Er(2), four equivalent Er(1), and two equivalent Ge(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er3FeGe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.577
_cell_length_b   5.577
_cell_length_c   13.494
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   137.295
_symmetry_Int_Tables_number   1
_cell_volume   284.685
_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
  Er  Er0  1  0.792  0.208  0.400  1.0
  Er  Er1  1  0.208  0.792  0.600  1.0
  Er  Er2  1  0.792  0.208  0.100  1.0
  Er  Er3  1  0.208  0.792  0.900  1.0
  Er  Er4  1  0.506  0.494  0.250  1.0
  Er  Er5  1  0.494  0.506  0.750  1.0
  Fe  Fe6  1  0.500  0.500  0.500  1.0
  Fe  Fe7  1  0.500  0.500  0.000  1.0
  Ge  Ge8  1  0.075  0.925  0.408  1.0
  Ge  Ge9  1  0.925  0.075  0.592  1.0
  Ge  Ge10  1  0.075  0.925  0.092  1.0
  Ge  Ge11  1  0.925  0.075  0.908  1.0
  Ge  Ge12  1  0.227  0.773  0.250  1.0
  Ge  Ge13  1  0.773  0.227  0.750  1.0
[/CIF]
.