The compound described by Er2Ge5 crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 10-coordinate geometry to two equivalent Ge(5), four equivalent Ge(1), and four equivalent Ge(2) atoms. In the second Er site, Er(2) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), two equivalent Ge(4), and four equivalent Ge(5) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to four equivalent Er(1) and four equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Er(2), four equivalent Er(1), and two equivalent Ge(5) atoms. In the third Ge site, Ge(3) is bonded in a 7-coordinate geometry to two equivalent Er(2) and five equivalent Ge(4) atoms. In the fourth Ge site, Ge(4) is bonded in a 7-coordinate geometry to two equivalent Er(2) and five equivalent Ge(3) atoms. In the fifth Ge site, Ge(5) is bonded in a 8-coordinate geometry to two equivalent Er(1), four equivalent Er(2), and two equivalent Ge(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2Ge5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.885
_cell_length_b   3.971
_cell_length_c   18.461
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   284.781
_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  0.750  0.750  0.626  1.0
  Er  Er1  1  0.250  0.250  0.374  1.0
  Er  Er2  1  0.750  0.250  0.188  1.0
  Er  Er3  1  0.250  0.750  0.812  1.0
  Ge  Ge4  1  0.750  0.250  0.504  1.0
  Ge  Ge5  1  0.250  0.750  0.496  1.0
  Ge  Ge6  1  0.750  0.750  0.326  1.0
  Ge  Ge7  1  0.250  0.250  0.674  1.0
  Ge  Ge8  1  0.250  0.250  0.066  1.0
  Ge  Ge9  1  0.750  0.750  0.934  1.0
  Ge  Ge10  1  0.250  0.250  0.932  1.0
  Ge  Ge11  1  0.750  0.750  0.068  1.0
  Ge  Ge12  1  0.250  0.750  0.239  1.0
  Ge  Ge13  1  0.750  0.250  0.761  1.0
[/CIF]
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The compound described by Er2Ge5 crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 10-coordinate geometry to two equivalent Ge(5), four equivalent Ge(1), and four equivalent Ge(2) atoms. In the second Er site, Er(2) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(3), two equivalent Ge(4), and four equivalent Ge(5) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to four equivalent Er(1) and four equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Er(2), four equivalent Er(1), and two equivalent Ge(5) atoms. In the third Ge site, Ge(3) is bonded in a 7-coordinate geometry to two equivalent Er(2) and five equivalent Ge(4) atoms. In the fourth Ge site, Ge(4) is bonded in a 7-coordinate geometry to two equivalent Er(2) and five equivalent Ge(3) atoms. In the fifth Ge site, Ge(5) is bonded in a 8-coordinate geometry to two equivalent Er(1), four equivalent Er(2), and two equivalent Ge(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2Ge5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.885
_cell_length_b   3.971
_cell_length_c   18.461
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   284.781
_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  0.750  0.750  0.626  1.0
  Er  Er1  1  0.250  0.250  0.374  1.0
  Er  Er2  1  0.750  0.250  0.188  1.0
  Er  Er3  1  0.250  0.750  0.812  1.0
  Ge  Ge4  1  0.750  0.250  0.504  1.0
  Ge  Ge5  1  0.250  0.750  0.496  1.0
  Ge  Ge6  1  0.750  0.750  0.326  1.0
  Ge  Ge7  1  0.250  0.250  0.674  1.0
  Ge  Ge8  1  0.250  0.250  0.066  1.0
  Ge  Ge9  1  0.750  0.750  0.934  1.0
  Ge  Ge10  1  0.250  0.250  0.932  1.0
  Ge  Ge11  1  0.750  0.750  0.068  1.0
  Ge  Ge12  1  0.250  0.750  0.239  1.0
  Ge  Ge13  1  0.750  0.250  0.761  1.0
[/CIF]
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