The crystal structure described by Nd2(ZnGe2)3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 14-coordinate geometry to two equivalent Zn(1), four equivalent Zn(2), two equivalent Ge(1), two equivalent Ge(3), and four equivalent Ge(2) atoms. In the second Nd site, Nd(2) is bonded in a 14-coordinate geometry to two equivalent Zn(1), four equivalent Zn(2), two equivalent Ge(1), two equivalent Ge(3), and four equivalent Ge(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), one Ge(1), and four equivalent Ge(2) atoms. In the second Zn site, Zn(2) is bonded to two equivalent Nd(1), two equivalent Nd(2), two equivalent Ge(1), and two equivalent Ge(3) atoms to form a mixture of distorted face and edge-sharing ZnNd4Ge4 tetrahedra. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), one Zn(1), and four equivalent Zn(2) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to one Nd(1), one Nd(2), one Zn(1), and three equivalent Ge(2) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), and four equivalent Zn(2) atoms. is represented by the CIF file [CIF]
data_Nd2(ZnGe2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.765
_cell_length_b   12.765
_cell_length_c   5.956
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   152.998
_symmetry_Int_Tables_number   1
_cell_volume   440.637
_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
  Nd  Nd0  1  0.894  0.106  0.750  1.0
  Nd  Nd1  1  0.393  0.607  0.250  1.0
  Nd  Nd2  1  0.607  0.393  0.750  1.0
  Nd  Nd3  1  0.106  0.894  0.250  1.0
  Zn  Zn4  1  0.161  0.839  0.750  1.0
  Zn  Zn5  1  0.263  0.263  0.500  1.0
  Zn  Zn6  1  0.263  0.263  0.000  1.0
  Zn  Zn7  1  0.737  0.737  0.000  1.0
  Zn  Zn8  1  0.839  0.161  0.250  1.0
  Zn  Zn9  1  0.737  0.737  0.500  1.0
  Ge  Ge10  1  0.941  0.059  0.250  1.0
  Ge  Ge11  1  0.485  0.083  0.035  1.0
  Ge  Ge12  1  0.059  0.941  0.750  1.0
  Ge  Ge13  1  0.430  0.570  0.750  1.0
  Ge  Ge14  1  0.515  0.917  0.535  1.0
  Ge  Ge15  1  0.917  0.515  0.035  1.0
  Ge  Ge16  1  0.917  0.515  0.465  1.0
  Ge  Ge17  1  0.515  0.917  0.965  1.0
  Ge  Ge18  1  0.485  0.083  0.465  1.0
  Ge  Ge19  1  0.083  0.485  0.535  1.0
  Ge  Ge20  1  0.570  0.430  0.250  1.0
  Ge  Ge21  1  0.083  0.485  0.965  1.0
[/CIF]
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The crystal structure described by Nd2(ZnGe2)3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 14-coordinate geometry to two equivalent Zn(1), four equivalent Zn(2), two equivalent Ge(1), two equivalent Ge(3), and four equivalent Ge(2) atoms. In the second Nd site, Nd(2) is bonded in a 14-coordinate geometry to two equivalent Zn(1), four equivalent Zn(2), two equivalent Ge(1), two equivalent Ge(3), and four equivalent Ge(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), one Ge(1), and four equivalent Ge(2) atoms. In the second Zn site, Zn(2) is bonded to two equivalent Nd(1), two equivalent Nd(2), two equivalent Ge(1), and two equivalent Ge(3) atoms to form a mixture of distorted face and edge-sharing ZnNd4Ge4 tetrahedra. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), one Zn(1), and four equivalent Zn(2) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to one Nd(1), one Nd(2), one Zn(1), and three equivalent Ge(2) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to two equivalent Nd(1), two equivalent Nd(2), and four equivalent Zn(2) atoms. is represented by the CIF file [CIF]
data_Nd2(ZnGe2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.765
_cell_length_b   12.765
_cell_length_c   5.956
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   152.998
_symmetry_Int_Tables_number   1
_cell_volume   440.637
_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
  Nd  Nd0  1  0.894  0.106  0.750  1.0
  Nd  Nd1  1  0.393  0.607  0.250  1.0
  Nd  Nd2  1  0.607  0.393  0.750  1.0
  Nd  Nd3  1  0.106  0.894  0.250  1.0
  Zn  Zn4  1  0.161  0.839  0.750  1.0
  Zn  Zn5  1  0.263  0.263  0.500  1.0
  Zn  Zn6  1  0.263  0.263  0.000  1.0
  Zn  Zn7  1  0.737  0.737  0.000  1.0
  Zn  Zn8  1  0.839  0.161  0.250  1.0
  Zn  Zn9  1  0.737  0.737  0.500  1.0
  Ge  Ge10  1  0.941  0.059  0.250  1.0
  Ge  Ge11  1  0.485  0.083  0.035  1.0
  Ge  Ge12  1  0.059  0.941  0.750  1.0
  Ge  Ge13  1  0.430  0.570  0.750  1.0
  Ge  Ge14  1  0.515  0.917  0.535  1.0
  Ge  Ge15  1  0.917  0.515  0.035  1.0
  Ge  Ge16  1  0.917  0.515  0.465  1.0
  Ge  Ge17  1  0.515  0.917  0.965  1.0
  Ge  Ge18  1  0.485  0.083  0.465  1.0
  Ge  Ge19  1  0.083  0.485  0.535  1.0
  Ge  Ge20  1  0.570  0.430  0.250  1.0
  Ge  Ge21  1  0.083  0.485  0.965  1.0
[/CIF]
.