The material structure described by Eu3(GeAs2)2 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to one As(1), one As(3), two equivalent As(2), and two equivalent As(4) atoms to form a mixture of distorted corner and edge-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles range from 4-7°. In the second Eu site, Eu(2) is bonded to one As(2), one As(4), two equivalent As(1), and two equivalent As(3) atoms to form a mixture of distorted corner and edge-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles range from 2-5°. In the third Eu site, Eu(3) is bonded to one As(2), one As(4), two equivalent As(1), and two equivalent As(3) atoms to form a mixture of distorted corner and edge-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles range from 2-7°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 4-coordinate geometry to one Ge(2), one As(1), one As(2), and one As(3) atom. In the second Ge site, Ge(2) is bonded in a 4-coordinate geometry to one Ge(1), one As(2), and two equivalent As(4) atoms. There are four inequivalent As sites. In the first As site, As(4) is bonded to one Eu(2), one Eu(3), two equivalent Eu(1), and two equivalent Ge(2) atoms to form AsEu4Ge2 octahedra that share corners with two equivalent As(2)Eu4Ge2 octahedra, corners with two equivalent As(3)Eu5Ge octahedra, corners with four equivalent As(1)Eu5Ge octahedra,  an edgeedge with one As(1)Eu5Ge octahedra, edges with two equivalent As(4)Eu4Ge2 octahedra, edges with two equivalent As(3)Eu5Ge octahedra, and edges with three equivalent As(2)Eu4Ge2 octahedra. The corner-sharing octahedral tilt angles range from 4-91°. In the second As site, As(1) is bonded to one Eu(1), two equivalent Eu(2), two equivalent Eu(3), and one Ge(1) atom to form AsEu5Ge octahedra that share  a cornercorner with one As(2)Eu4Ge2 octahedra, corners with two equivalent As(3)Eu5Ge octahedra, corners with four equivalent As(4)Eu4Ge2 octahedra,  an edgeedge with one As(4)Eu4Ge2 octahedra, edges with two equivalent As(1)Eu5Ge octahedra, edges with three equivalent As(2)Eu4Ge2 octahedra, and edges with four equivalent As(3)Eu5Ge octahedra. The corner-sharing octahedral tilt angles range from 2-86°. In the third As site, As(2) is bonded to one Eu(2), one Eu(3), two equivalent Eu(1), one Ge(1), and one Ge(2) atom to form AsEu4Ge2 octahedra that share  a cornercorner with one As(1)Eu5Ge octahedra, corners with two equivalent As(2)Eu4Ge2 octahedra, corners with two equivalent As(4)Eu4Ge2 octahedra, corners with three equivalent As(3)Eu5Ge octahedra, edges with two equivalent As(3)Eu5Ge octahedra, edges with three equivalent As(4)Eu4Ge2 octahedra, and edges with three equivalent As(1)Eu5Ge octahedra. The corner-sharing octahedral tilt angles range from 4-91°. In the fourth As site, As(3) is bonded to one Eu(1), two equivalent Eu(2), two equivalent Eu(3), and one Ge(1) atom to form AsEu5Ge octahedra that share corners with two equivalent As(4)Eu4Ge2 octahedra, corners with two equivalent As(1)Eu5Ge octahedra, corners with three equivalent As(2)Eu4Ge2 octahedra, edges with two equivalent As(2)Eu4Ge2 octahedra, edges with two equivalent As(4)Eu4Ge2 octahedra, edges with two equivalent As(3)Eu5Ge octahedra, and edges with four equivalent As(1)Eu5Ge octahedra. The corner-sharing octahedral tilt angles range from 2-91°. is represented by the CIF file [CIF]
data_Eu3(GeAs2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   18.146
_cell_length_b   7.464
_cell_length_c   7.519
_cell_angle_alpha   68.620
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   948.406
_cell_formula_units_Z   4
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  0.316  0.488  0.221  1.0
  Eu  Eu1  1  0.816  0.012  0.779  1.0
  Eu  Eu2  1  0.684  0.512  0.779  1.0
  Eu  Eu3  1  0.184  0.988  0.221  1.0
  Eu  Eu4  1  0.062  0.489  0.254  1.0
  Eu  Eu5  1  0.562  0.011  0.746  1.0
  Eu  Eu6  1  0.938  0.511  0.746  1.0
  Eu  Eu7  1  0.438  0.989  0.254  1.0
  Eu  Eu8  1  0.560  0.499  0.260  1.0
  Eu  Eu9  1  0.060  0.001  0.740  1.0
  Eu  Eu10  1  0.440  0.501  0.740  1.0
  Eu  Eu11  1  0.940  0.999  0.260  1.0
  Ge  Ge12  1  0.873  0.470  0.209  1.0
  Ge  Ge13  1  0.373  0.030  0.791  1.0
  Ge  Ge14  1  0.127  0.530  0.791  1.0
  Ge  Ge15  1  0.627  0.970  0.209  1.0
  Ge  Ge16  1  0.741  0.085  0.315  1.0
  Ge  Ge17  1  0.241  0.415  0.685  1.0
  Ge  Ge18  1  0.259  0.915  0.685  1.0
  Ge  Ge19  1  0.759  0.585  0.315  1.0
  As  As20  1  0.558  0.253  0.003  1.0
  As  As21  1  0.058  0.247  0.997  1.0
  As  As22  1  0.442  0.747  0.997  1.0
  As  As23  1  0.942  0.753  0.003  1.0
  As  As24  1  0.814  0.277  0.028  1.0
  As  As25  1  0.314  0.223  0.972  1.0
  As  As26  1  0.186  0.723  0.972  1.0
  As  As27  1  0.686  0.777  0.028  1.0
  As  As28  1  0.935  0.255  0.503  1.0
  As  As29  1  0.435  0.245  0.497  1.0
  As  As30  1  0.065  0.745  0.497  1.0
  As  As31  1  0.565  0.755  0.503  1.0
  As  As32  1  0.695  0.273  0.510  1.0
  As  As33  1  0.195  0.227  0.490  1.0
  As  As34  1  0.305  0.727  0.490  1.0
  As  As35  1  0.805  0.773  0.510  1.0
[/CIF]
.
The material structure described by Eu3(GeAs2)2 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to one As(1), one As(3), two equivalent As(2), and two equivalent As(4) atoms to form a mixture of distorted corner and edge-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles range from 4-7°. In the second Eu site, Eu(2) is bonded to one As(2), one As(4), two equivalent As(1), and two equivalent As(3) atoms to form a mixture of distorted corner and edge-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles range from 2-5°. In the third Eu site, Eu(3) is bonded to one As(2), one As(4), two equivalent As(1), and two equivalent As(3) atoms to form a mixture of distorted corner and edge-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles range from 2-7°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 4-coordinate geometry to one Ge(2), one As(1), one As(2), and one As(3) atom. In the second Ge site, Ge(2) is bonded in a 4-coordinate geometry to one Ge(1), one As(2), and two equivalent As(4) atoms. There are four inequivalent As sites. In the first As site, As(4) is bonded to one Eu(2), one Eu(3), two equivalent Eu(1), and two equivalent Ge(2) atoms to form AsEu4Ge2 octahedra that share corners with two equivalent As(2)Eu4Ge2 octahedra, corners with two equivalent As(3)Eu5Ge octahedra, corners with four equivalent As(1)Eu5Ge octahedra,  an edgeedge with one As(1)Eu5Ge octahedra, edges with two equivalent As(4)Eu4Ge2 octahedra, edges with two equivalent As(3)Eu5Ge octahedra, and edges with three equivalent As(2)Eu4Ge2 octahedra. The corner-sharing octahedral tilt angles range from 4-91°. In the second As site, As(1) is bonded to one Eu(1), two equivalent Eu(2), two equivalent Eu(3), and one Ge(1) atom to form AsEu5Ge octahedra that share  a cornercorner with one As(2)Eu4Ge2 octahedra, corners with two equivalent As(3)Eu5Ge octahedra, corners with four equivalent As(4)Eu4Ge2 octahedra,  an edgeedge with one As(4)Eu4Ge2 octahedra, edges with two equivalent As(1)Eu5Ge octahedra, edges with three equivalent As(2)Eu4Ge2 octahedra, and edges with four equivalent As(3)Eu5Ge octahedra. The corner-sharing octahedral tilt angles range from 2-86°. In the third As site, As(2) is bonded to one Eu(2), one Eu(3), two equivalent Eu(1), one Ge(1), and one Ge(2) atom to form AsEu4Ge2 octahedra that share  a cornercorner with one As(1)Eu5Ge octahedra, corners with two equivalent As(2)Eu4Ge2 octahedra, corners with two equivalent As(4)Eu4Ge2 octahedra, corners with three equivalent As(3)Eu5Ge octahedra, edges with two equivalent As(3)Eu5Ge octahedra, edges with three equivalent As(4)Eu4Ge2 octahedra, and edges with three equivalent As(1)Eu5Ge octahedra. The corner-sharing octahedral tilt angles range from 4-91°. In the fourth As site, As(3) is bonded to one Eu(1), two equivalent Eu(2), two equivalent Eu(3), and one Ge(1) atom to form AsEu5Ge octahedra that share corners with two equivalent As(4)Eu4Ge2 octahedra, corners with two equivalent As(1)Eu5Ge octahedra, corners with three equivalent As(2)Eu4Ge2 octahedra, edges with two equivalent As(2)Eu4Ge2 octahedra, edges with two equivalent As(4)Eu4Ge2 octahedra, edges with two equivalent As(3)Eu5Ge octahedra, and edges with four equivalent As(1)Eu5Ge octahedra. The corner-sharing octahedral tilt angles range from 2-91°. is represented by the CIF file [CIF]
data_Eu3(GeAs2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   18.146
_cell_length_b   7.464
_cell_length_c   7.519
_cell_angle_alpha   68.620
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   948.406
_cell_formula_units_Z   4
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  0.316  0.488  0.221  1.0
  Eu  Eu1  1  0.816  0.012  0.779  1.0
  Eu  Eu2  1  0.684  0.512  0.779  1.0
  Eu  Eu3  1  0.184  0.988  0.221  1.0
  Eu  Eu4  1  0.062  0.489  0.254  1.0
  Eu  Eu5  1  0.562  0.011  0.746  1.0
  Eu  Eu6  1  0.938  0.511  0.746  1.0
  Eu  Eu7  1  0.438  0.989  0.254  1.0
  Eu  Eu8  1  0.560  0.499  0.260  1.0
  Eu  Eu9  1  0.060  0.001  0.740  1.0
  Eu  Eu10  1  0.440  0.501  0.740  1.0
  Eu  Eu11  1  0.940  0.999  0.260  1.0
  Ge  Ge12  1  0.873  0.470  0.209  1.0
  Ge  Ge13  1  0.373  0.030  0.791  1.0
  Ge  Ge14  1  0.127  0.530  0.791  1.0
  Ge  Ge15  1  0.627  0.970  0.209  1.0
  Ge  Ge16  1  0.741  0.085  0.315  1.0
  Ge  Ge17  1  0.241  0.415  0.685  1.0
  Ge  Ge18  1  0.259  0.915  0.685  1.0
  Ge  Ge19  1  0.759  0.585  0.315  1.0
  As  As20  1  0.558  0.253  0.003  1.0
  As  As21  1  0.058  0.247  0.997  1.0
  As  As22  1  0.442  0.747  0.997  1.0
  As  As23  1  0.942  0.753  0.003  1.0
  As  As24  1  0.814  0.277  0.028  1.0
  As  As25  1  0.314  0.223  0.972  1.0
  As  As26  1  0.186  0.723  0.972  1.0
  As  As27  1  0.686  0.777  0.028  1.0
  As  As28  1  0.935  0.255  0.503  1.0
  As  As29  1  0.435  0.245  0.497  1.0
  As  As30  1  0.065  0.745  0.497  1.0
  As  As31  1  0.565  0.755  0.503  1.0
  As  As32  1  0.695  0.273  0.510  1.0
  As  As33  1  0.195  0.227  0.490  1.0
  As  As34  1  0.305  0.727  0.490  1.0
  As  As35  1  0.805  0.773  0.510  1.0
[/CIF]
.