The structure described by Eu3(Ga2Ge3)2 crystallizes in the monoclinic C2/m space group. There are three inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 15-coordinate geometry to one Ga(3), one Ga(4), two equivalent Ga(1), three equivalent Ga(2), one Ge(1), two equivalent Ge(4), two equivalent Ge(5), and three equivalent Ge(3) atoms. In the second Eu site, Eu(2) is bonded in a 13-coordinate geometry to one Ga(1), two equivalent Ga(3), two equivalent Ga(4), one Ge(4), one Ge(5), two equivalent Ge(1), and four equivalent Ge(6) atoms. In the third Eu site, Eu(3) is bonded in a 14-coordinate geometry to two equivalent Ga(2), two equivalent Ga(3), two equivalent Ga(4), one Ge(3), one Ge(4), one Ge(5), two equivalent Ge(6), and three equivalent Ge(2) atoms. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 7-coordinate geometry to one Eu(2), two equivalent Eu(1), one Ge(4), one Ge(5), and two equivalent Ge(1) atoms. In the second Ga site, Ga(2) is bonded to two equivalent Eu(3), three equivalent Eu(1), one Ge(2), one Ge(4), and two equivalent Ge(3) atoms to form a mixture of distorted edge and face-sharing GaEu5Ge4 tetrahedra. In the third Ga site, Ga(3) is bonded in a 4-coordinate geometry to one Eu(1), two equivalent Eu(2), two equivalent Eu(3), one Ge(1), one Ge(6), and two equivalent Ge(5) atoms. In the fourth Ga site, Ga(4) is bonded in a 4-coordinate geometry to one Eu(1), two equivalent Eu(2), two equivalent Eu(3), one Ge(2), one Ge(6), and two equivalent Ge(4) atoms. There are six inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 7-coordinate geometry to one Eu(3), three equivalent Eu(1), two equivalent Ga(2), and one Ge(5) atom. In the second Ge site, Ge(4) is bonded in a 7-coordinate geometry to one Eu(2), one Eu(3), two equivalent Eu(1), one Ga(1), one Ga(2), and two equivalent Ga(4) atoms. In the third Ge site, Ge(5) is bonded in a 8-coordinate geometry to one Eu(2), one Eu(3), two equivalent Eu(1), one Ga(1), two equivalent Ga(3), and one Ge(3) atom. In the fourth Ge site, Ge(6) is bonded in a 9-coordinate geometry to two equivalent Eu(3), four equivalent Eu(2), one Ga(3), one Ga(4), and one Ge(6) atom. In the fifth Ge site, Ge(1) is bonded in a 7-coordinate geometry to one Eu(1), two equivalent Eu(2), one Ga(3), two equivalent Ga(1), and one Ge(1) atom. In the sixth Ge site, Ge(2) is bonded in a 7-coordinate geometry to three equivalent Eu(3), one Ga(2), one Ga(4), and two equivalent Ge(2) atoms. is represented by the CIF file [CIF]
data_Eu3(Ga2Ge3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.131
_cell_length_b   12.131
_cell_length_c   10.856
_cell_angle_alpha   88.456
_cell_angle_beta   88.456
_cell_angle_gamma   21.210
_symmetry_Int_Tables_number   1
_cell_volume   577.756
_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  0.173  0.173  0.456  1.0
  Eu  Eu1  1  0.827  0.827  0.544  1.0
  Eu  Eu2  1  0.477  0.477  0.832  1.0
  Eu  Eu3  1  0.523  0.523  0.168  1.0
  Eu  Eu4  1  0.645  0.645  0.900  1.0
  Eu  Eu5  1  0.355  0.355  0.100  1.0
  Ga  Ga6  1  0.424  0.424  0.583  1.0
  Ga  Ga7  1  0.576  0.576  0.417  1.0
  Ga  Ga8  1  0.240  0.240  0.743  1.0
  Ga  Ga9  1  0.760  0.760  0.257  1.0
  Ga  Ga10  1  0.066  0.066  0.726  1.0
  Ga  Ga11  1  0.934  0.934  0.274  1.0
  Ga  Ga12  1  0.862  0.862  0.878  1.0
  Ga  Ga13  1  0.138  0.138  0.122  1.0
  Ge  Ge14  1  0.025  0.025  0.397  1.0
  Ge  Ge15  1  0.975  0.975  0.603  1.0
  Ge  Ge16  1  0.228  0.228  0.979  1.0
  Ge  Ge17  1  0.772  0.772  0.021  1.0
  Ge  Ge18  1  0.291  0.291  0.356  1.0
  Ge  Ge19  1  0.709  0.709  0.644  1.0
  Ge  Ge20  1  0.348  0.348  0.763  1.0
  Ge  Ge21  1  0.652  0.652  0.237  1.0
  Ge  Ge22  1  0.604  0.604  0.638  1.0
  Ge  Ge23  1  0.396  0.396  0.362  1.0
  Ge  Ge24  1  0.052  0.052  0.965  1.0
  Ge  Ge25  1  0.948  0.948  0.035  1.0
[/CIF]
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The structure described by Eu3(Ga2Ge3)2 crystallizes in the monoclinic C2/m space group. There are three inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 15-coordinate geometry to one Ga(3), one Ga(4), two equivalent Ga(1), three equivalent Ga(2), one Ge(1), two equivalent Ge(4), two equivalent Ge(5), and three equivalent Ge(3) atoms. In the second Eu site, Eu(2) is bonded in a 13-coordinate geometry to one Ga(1), two equivalent Ga(3), two equivalent Ga(4), one Ge(4), one Ge(5), two equivalent Ge(1), and four equivalent Ge(6) atoms. In the third Eu site, Eu(3) is bonded in a 14-coordinate geometry to two equivalent Ga(2), two equivalent Ga(3), two equivalent Ga(4), one Ge(3), one Ge(4), one Ge(5), two equivalent Ge(6), and three equivalent Ge(2) atoms. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 7-coordinate geometry to one Eu(2), two equivalent Eu(1), one Ge(4), one Ge(5), and two equivalent Ge(1) atoms. In the second Ga site, Ga(2) is bonded to two equivalent Eu(3), three equivalent Eu(1), one Ge(2), one Ge(4), and two equivalent Ge(3) atoms to form a mixture of distorted edge and face-sharing GaEu5Ge4 tetrahedra. In the third Ga site, Ga(3) is bonded in a 4-coordinate geometry to one Eu(1), two equivalent Eu(2), two equivalent Eu(3), one Ge(1), one Ge(6), and two equivalent Ge(5) atoms. In the fourth Ga site, Ga(4) is bonded in a 4-coordinate geometry to one Eu(1), two equivalent Eu(2), two equivalent Eu(3), one Ge(2), one Ge(6), and two equivalent Ge(4) atoms. There are six inequivalent Ge sites. In the first Ge site, Ge(3) is bonded in a 7-coordinate geometry to one Eu(3), three equivalent Eu(1), two equivalent Ga(2), and one Ge(5) atom. In the second Ge site, Ge(4) is bonded in a 7-coordinate geometry to one Eu(2), one Eu(3), two equivalent Eu(1), one Ga(1), one Ga(2), and two equivalent Ga(4) atoms. In the third Ge site, Ge(5) is bonded in a 8-coordinate geometry to one Eu(2), one Eu(3), two equivalent Eu(1), one Ga(1), two equivalent Ga(3), and one Ge(3) atom. In the fourth Ge site, Ge(6) is bonded in a 9-coordinate geometry to two equivalent Eu(3), four equivalent Eu(2), one Ga(3), one Ga(4), and one Ge(6) atom. In the fifth Ge site, Ge(1) is bonded in a 7-coordinate geometry to one Eu(1), two equivalent Eu(2), one Ga(3), two equivalent Ga(1), and one Ge(1) atom. In the sixth Ge site, Ge(2) is bonded in a 7-coordinate geometry to three equivalent Eu(3), one Ga(2), one Ga(4), and two equivalent Ge(2) atoms. is represented by the CIF file [CIF]
data_Eu3(Ga2Ge3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.131
_cell_length_b   12.131
_cell_length_c   10.856
_cell_angle_alpha   88.456
_cell_angle_beta   88.456
_cell_angle_gamma   21.210
_symmetry_Int_Tables_number   1
_cell_volume   577.756
_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  0.173  0.173  0.456  1.0
  Eu  Eu1  1  0.827  0.827  0.544  1.0
  Eu  Eu2  1  0.477  0.477  0.832  1.0
  Eu  Eu3  1  0.523  0.523  0.168  1.0
  Eu  Eu4  1  0.645  0.645  0.900  1.0
  Eu  Eu5  1  0.355  0.355  0.100  1.0
  Ga  Ga6  1  0.424  0.424  0.583  1.0
  Ga  Ga7  1  0.576  0.576  0.417  1.0
  Ga  Ga8  1  0.240  0.240  0.743  1.0
  Ga  Ga9  1  0.760  0.760  0.257  1.0
  Ga  Ga10  1  0.066  0.066  0.726  1.0
  Ga  Ga11  1  0.934  0.934  0.274  1.0
  Ga  Ga12  1  0.862  0.862  0.878  1.0
  Ga  Ga13  1  0.138  0.138  0.122  1.0
  Ge  Ge14  1  0.025  0.025  0.397  1.0
  Ge  Ge15  1  0.975  0.975  0.603  1.0
  Ge  Ge16  1  0.228  0.228  0.979  1.0
  Ge  Ge17  1  0.772  0.772  0.021  1.0
  Ge  Ge18  1  0.291  0.291  0.356  1.0
  Ge  Ge19  1  0.709  0.709  0.644  1.0
  Ge  Ge20  1  0.348  0.348  0.763  1.0
  Ge  Ge21  1  0.652  0.652  0.237  1.0
  Ge  Ge22  1  0.604  0.604  0.638  1.0
  Ge  Ge23  1  0.396  0.396  0.362  1.0
  Ge  Ge24  1  0.052  0.052  0.965  1.0
  Ge  Ge25  1  0.948  0.948  0.035  1.0
[/CIF]
.