The structure described by Nd2Al3Ge is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded to two equivalent Al(3), four equivalent Al(1), four equivalent Al(2), and two equivalent Ge(1) atoms to form NdAl10Ge2 cuboctahedra that share edges with four equivalent Nd(1)Al10Ge2 cuboctahedra, edges with eight equivalent Nd(2)Al8Ge4 cuboctahedra, faces with four equivalent Nd(1)Al10Ge2 cuboctahedra, and faces with four equivalent Nd(2)Al8Ge4 cuboctahedra. In the second Nd site, Nd(2) is bonded to two equivalent Al(1), two equivalent Al(2), four equivalent Al(3), and four equivalent Ge(1) atoms to form NdAl8Ge4 cuboctahedra that share edges with four equivalent Nd(2)Al8Ge4 cuboctahedra, edges with eight equivalent Nd(1)Al10Ge2 cuboctahedra, faces with four equivalent Nd(1)Al10Ge2 cuboctahedra, and faces with four equivalent Nd(2)Al8Ge4 cuboctahedra. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 9-coordinate geometry to two equivalent Nd(2), four equivalent Nd(1), one Al(2), and two equivalent Al(3) atoms. In the second Al site, Al(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Nd(2), four equivalent Nd(1), one Al(1), and two equivalent Ge(1) atoms. In the third Al site, Al(3) is bonded in a distorted single-bond geometry to two equivalent Nd(1), four equivalent Nd(2), two equivalent Al(1), and one Ge(1) atom. Ge(1) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1), four equivalent Nd(2), one Al(3), and two equivalent Al(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nd2Al3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.287
_cell_length_b   4.320
_cell_length_c   7.501
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   138.917
_cell_formula_units_Z   1
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  0.000  0.500  0.005  1.0
  Nd  Nd1  1  0.000  0.000  0.496  1.0
  Al  Al2  1  0.500  0.000  0.831  1.0
  Al  Al3  1  0.500  0.000  0.166  1.0
  Al  Al4  1  0.500  0.500  0.666  1.0
  Ge  Ge5  1  0.500  0.500  0.336  1.0
[/CIF]
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The structure described by Nd2Al3Ge is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded to two equivalent Al(3), four equivalent Al(1), four equivalent Al(2), and two equivalent Ge(1) atoms to form NdAl10Ge2 cuboctahedra that share edges with four equivalent Nd(1)Al10Ge2 cuboctahedra, edges with eight equivalent Nd(2)Al8Ge4 cuboctahedra, faces with four equivalent Nd(1)Al10Ge2 cuboctahedra, and faces with four equivalent Nd(2)Al8Ge4 cuboctahedra. In the second Nd site, Nd(2) is bonded to two equivalent Al(1), two equivalent Al(2), four equivalent Al(3), and four equivalent Ge(1) atoms to form NdAl8Ge4 cuboctahedra that share edges with four equivalent Nd(2)Al8Ge4 cuboctahedra, edges with eight equivalent Nd(1)Al10Ge2 cuboctahedra, faces with four equivalent Nd(1)Al10Ge2 cuboctahedra, and faces with four equivalent Nd(2)Al8Ge4 cuboctahedra. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 9-coordinate geometry to two equivalent Nd(2), four equivalent Nd(1), one Al(2), and two equivalent Al(3) atoms. In the second Al site, Al(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Nd(2), four equivalent Nd(1), one Al(1), and two equivalent Ge(1) atoms. In the third Al site, Al(3) is bonded in a distorted single-bond geometry to two equivalent Nd(1), four equivalent Nd(2), two equivalent Al(1), and one Ge(1) atom. Ge(1) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1), four equivalent Nd(2), one Al(3), and two equivalent Al(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nd2Al3Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.287
_cell_length_b   4.320
_cell_length_c   7.501
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   138.917
_cell_formula_units_Z   1
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  0.000  0.500  0.005  1.0
  Nd  Nd1  1  0.000  0.000  0.496  1.0
  Al  Al2  1  0.500  0.000  0.831  1.0
  Al  Al3  1  0.500  0.000  0.166  1.0
  Al  Al4  1  0.500  0.500  0.666  1.0
  Ge  Ge5  1  0.500  0.500  0.336  1.0
[/CIF]
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