The material described by Eu2ZnGe3 crystallizes in the orthorhombic Fmmm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to two equivalent Zn(1), two equivalent Ge(1), and eight equivalent Ge(2) atoms to form EuZn2Ge10 cuboctahedra that share edges with four equivalent Eu(1)Zn2Ge10 cuboctahedra, edges with eight equivalent Eu(2)Zn4Ge8 cuboctahedra, faces with four equivalent Eu(1)Zn2Ge10 cuboctahedra, and faces with four equivalent Eu(2)Zn4Ge8 cuboctahedra. In the second Eu site, Eu(2) is bonded to four equivalent Zn(1), four equivalent Ge(1), and four equivalent Ge(2) atoms to form EuZn4Ge8 cuboctahedra that share edges with four equivalent Eu(2)Zn4Ge8 cuboctahedra, edges with eight equivalent Eu(1)Zn2Ge10 cuboctahedra, faces with four equivalent Eu(1)Zn2Ge10 cuboctahedra, and faces with four equivalent Eu(2)Zn4Ge8 cuboctahedra. Zn(1) is bonded in a distorted trigonal planar geometry to two equivalent Eu(1), four equivalent Eu(2), one Ge(1), and two equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a distorted single-bond geometry to two equivalent Eu(1), four equivalent Eu(2), one Zn(1), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a distorted single-bond geometry to two equivalent Eu(2), four equivalent Eu(1), one Zn(1), one Ge(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2ZnGe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.620
_cell_length_b   8.544
_cell_length_c   6.134
_cell_angle_alpha   69.720
_cell_angle_beta   68.405
_cell_angle_gamma   41.876
_symmetry_Int_Tables_number   1
_cell_volume   278.465
_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  0.245  0.755  0.245  1.0
  Eu  Eu1  1  0.755  0.245  0.755  1.0
  Eu  Eu2  1  0.250  0.250  0.250  1.0
  Eu  Eu3  1  0.750  0.750  0.750  1.0
  Zn  Zn4  1  0.334  0.334  0.666  1.0
  Zn  Zn5  1  0.666  0.666  0.334  1.0
  Ge  Ge6  1  0.169  0.169  0.831  1.0
  Ge  Ge7  1  0.831  0.831  0.169  1.0
  Ge  Ge8  1  0.830  0.338  0.170  1.0
  Ge  Ge9  1  0.662  0.170  0.338  1.0
  Ge  Ge10  1  0.338  0.830  0.662  1.0
  Ge  Ge11  1  0.170  0.662  0.830  1.0
[/CIF]
.
The material described by Eu2ZnGe3 crystallizes in the orthorhombic Fmmm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to two equivalent Zn(1), two equivalent Ge(1), and eight equivalent Ge(2) atoms to form EuZn2Ge10 cuboctahedra that share edges with four equivalent Eu(1)Zn2Ge10 cuboctahedra, edges with eight equivalent Eu(2)Zn4Ge8 cuboctahedra, faces with four equivalent Eu(1)Zn2Ge10 cuboctahedra, and faces with four equivalent Eu(2)Zn4Ge8 cuboctahedra. In the second Eu site, Eu(2) is bonded to four equivalent Zn(1), four equivalent Ge(1), and four equivalent Ge(2) atoms to form EuZn4Ge8 cuboctahedra that share edges with four equivalent Eu(2)Zn4Ge8 cuboctahedra, edges with eight equivalent Eu(1)Zn2Ge10 cuboctahedra, faces with four equivalent Eu(1)Zn2Ge10 cuboctahedra, and faces with four equivalent Eu(2)Zn4Ge8 cuboctahedra. Zn(1) is bonded in a distorted trigonal planar geometry to two equivalent Eu(1), four equivalent Eu(2), one Ge(1), and two equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a distorted single-bond geometry to two equivalent Eu(1), four equivalent Eu(2), one Zn(1), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a distorted single-bond geometry to two equivalent Eu(2), four equivalent Eu(1), one Zn(1), one Ge(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2ZnGe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.620
_cell_length_b   8.544
_cell_length_c   6.134
_cell_angle_alpha   69.720
_cell_angle_beta   68.405
_cell_angle_gamma   41.876
_symmetry_Int_Tables_number   1
_cell_volume   278.465
_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  0.245  0.755  0.245  1.0
  Eu  Eu1  1  0.755  0.245  0.755  1.0
  Eu  Eu2  1  0.250  0.250  0.250  1.0
  Eu  Eu3  1  0.750  0.750  0.750  1.0
  Zn  Zn4  1  0.334  0.334  0.666  1.0
  Zn  Zn5  1  0.666  0.666  0.334  1.0
  Ge  Ge6  1  0.169  0.169  0.831  1.0
  Ge  Ge7  1  0.831  0.831  0.169  1.0
  Ge  Ge8  1  0.830  0.338  0.170  1.0
  Ge  Ge9  1  0.662  0.170  0.338  1.0
  Ge  Ge10  1  0.338  0.830  0.662  1.0
  Ge  Ge11  1  0.170  0.662  0.830  1.0
[/CIF]
.