The crystal structure described by EuIr3Ge7 crystallizes in the trigonal R-3c space group. Eu(1) is bonded in a 18-coordinate geometry to six equivalent Ir(1) and twelve equivalent Ge(1) atoms. Ir(1) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Ge(2), and six equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a trigonal planar geometry to three equivalent Ir(1) and six equivalent Ge(1) atoms. In the second Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Eu(1), three equivalent Ir(1), one Ge(2), and four equivalent Ge(1) atoms. is represented by the CIF card [CIF]
data_EuGe7Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.381
_cell_length_b   8.381
_cell_length_c   8.381
_cell_angle_alpha   56.859
_cell_angle_beta   56.859
_cell_angle_gamma   56.859
_symmetry_Int_Tables_number   1
_cell_volume   386.045
_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
  Eu  Eu0  1  0.500  0.500  0.500  1.0
  Eu  Eu1  1  0.000  0.000  0.000  1.0
  Ge  Ge2  1  0.350  0.168  0.574  1.0
  Ge  Ge3  1  0.574  0.350  0.168  1.0
  Ge  Ge4  1  0.168  0.574  0.350  1.0
  Ge  Ge5  1  0.074  0.668  0.850  1.0
  Ge  Ge6  1  0.850  0.074  0.668  1.0
  Ge  Ge7  1  0.668  0.850  0.074  1.0
  Ge  Ge8  1  0.650  0.832  0.426  1.0
  Ge  Ge9  1  0.426  0.650  0.832  1.0
  Ge  Ge10  1  0.832  0.426  0.650  1.0
  Ge  Ge11  1  0.926  0.332  0.150  1.0
  Ge  Ge12  1  0.150  0.926  0.332  1.0
  Ge  Ge13  1  0.332  0.150  0.926  1.0
  Ge  Ge14  1  0.250  0.250  0.250  1.0
  Ge  Ge15  1  0.750  0.750  0.750  1.0
  Ir  Ir16  1  0.933  0.567  0.250  1.0
  Ir  Ir17  1  0.250  0.933  0.567  1.0
  Ir  Ir18  1  0.567  0.250  0.933  1.0
  Ir  Ir19  1  0.750  0.067  0.433  1.0
  Ir  Ir20  1  0.433  0.750  0.067  1.0
  Ir  Ir21  1  0.067  0.433  0.750  1.0
[/CIF]
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The crystal structure described by EuIr3Ge7 crystallizes in the trigonal R-3c space group. Eu(1) is bonded in a 18-coordinate geometry to six equivalent Ir(1) and twelve equivalent Ge(1) atoms. Ir(1) is bonded in a 9-coordinate geometry to two equivalent Eu(1), one Ge(2), and six equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a trigonal planar geometry to three equivalent Ir(1) and six equivalent Ge(1) atoms. In the second Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Eu(1), three equivalent Ir(1), one Ge(2), and four equivalent Ge(1) atoms. is represented by the CIF card [CIF]
data_EuGe7Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.381
_cell_length_b   8.381
_cell_length_c   8.381
_cell_angle_alpha   56.859
_cell_angle_beta   56.859
_cell_angle_gamma   56.859
_symmetry_Int_Tables_number   1
_cell_volume   386.045
_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
  Eu  Eu0  1  0.500  0.500  0.500  1.0
  Eu  Eu1  1  0.000  0.000  0.000  1.0
  Ge  Ge2  1  0.350  0.168  0.574  1.0
  Ge  Ge3  1  0.574  0.350  0.168  1.0
  Ge  Ge4  1  0.168  0.574  0.350  1.0
  Ge  Ge5  1  0.074  0.668  0.850  1.0
  Ge  Ge6  1  0.850  0.074  0.668  1.0
  Ge  Ge7  1  0.668  0.850  0.074  1.0
  Ge  Ge8  1  0.650  0.832  0.426  1.0
  Ge  Ge9  1  0.426  0.650  0.832  1.0
  Ge  Ge10  1  0.832  0.426  0.650  1.0
  Ge  Ge11  1  0.926  0.332  0.150  1.0
  Ge  Ge12  1  0.150  0.926  0.332  1.0
  Ge  Ge13  1  0.332  0.150  0.926  1.0
  Ge  Ge14  1  0.250  0.250  0.250  1.0
  Ge  Ge15  1  0.750  0.750  0.750  1.0
  Ir  Ir16  1  0.933  0.567  0.250  1.0
  Ir  Ir17  1  0.250  0.933  0.567  1.0
  Ir  Ir18  1  0.567  0.250  0.933  1.0
  Ir  Ir19  1  0.750  0.067  0.433  1.0
  Ir  Ir20  1  0.433  0.750  0.067  1.0
  Ir  Ir21  1  0.067  0.433  0.750  1.0
[/CIF]
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