The compound described by Er2RuGe2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 10-coordinate geometry to four equivalent Ru(1), two equivalent Ge(2), and five equivalent Ge(1) atoms. In the second Er site, Er(2) is bonded in a 8-coordinate geometry to two equivalent Ru(1), one Ge(1), and five equivalent Ge(2) atoms. Ru(1) is bonded in a 10-coordinate geometry to two equivalent Er(2), four equivalent Er(1), one Ge(2), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to one Er(2), five equivalent Er(1), three equivalent Ru(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Er(1), five equivalent Er(2), one Ru(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2Ge2Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.718
_cell_length_b   5.718
_cell_length_c   10.036
_cell_angle_alpha   64.078
_cell_angle_beta   64.078
_cell_angle_gamma   43.656
_symmetry_Int_Tables_number   1
_cell_volume   199.848
_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  1.000  1.000  0.328  1.0
  Er  Er1  1  0.000  0.000  0.672  1.0
  Er  Er2  1  0.817  0.817  0.112  1.0
  Er  Er3  1  0.183  0.183  0.888  1.0
  Ge  Ge4  1  0.644  0.644  0.436  1.0
  Ge  Ge5  1  0.356  0.356  0.564  1.0
  Ge  Ge6  1  0.514  0.514  0.124  1.0
  Ge  Ge7  1  0.486  0.486  0.876  1.0
  Ru  Ru8  1  0.730  0.730  0.629  1.0
  Ru  Ru9  1  0.270  0.270  0.371  1.0
[/CIF]
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The compound described by Er2RuGe2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 10-coordinate geometry to four equivalent Ru(1), two equivalent Ge(2), and five equivalent Ge(1) atoms. In the second Er site, Er(2) is bonded in a 8-coordinate geometry to two equivalent Ru(1), one Ge(1), and five equivalent Ge(2) atoms. Ru(1) is bonded in a 10-coordinate geometry to two equivalent Er(2), four equivalent Er(1), one Ge(2), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to one Er(2), five equivalent Er(1), three equivalent Ru(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Er(1), five equivalent Er(2), one Ru(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2Ge2Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.718
_cell_length_b   5.718
_cell_length_c   10.036
_cell_angle_alpha   64.078
_cell_angle_beta   64.078
_cell_angle_gamma   43.656
_symmetry_Int_Tables_number   1
_cell_volume   199.848
_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  1.000  1.000  0.328  1.0
  Er  Er1  1  0.000  0.000  0.672  1.0
  Er  Er2  1  0.817  0.817  0.112  1.0
  Er  Er3  1  0.183  0.183  0.888  1.0
  Ge  Ge4  1  0.644  0.644  0.436  1.0
  Ge  Ge5  1  0.356  0.356  0.564  1.0
  Ge  Ge6  1  0.514  0.514  0.124  1.0
  Ge  Ge7  1  0.486  0.486  0.876  1.0
  Ru  Ru8  1  0.730  0.730  0.629  1.0
  Ru  Ru9  1  0.270  0.270  0.371  1.0
[/CIF]
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