The structure described by CuGe4Hf2 is Parent of FeAs superconductors-derived structured and crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded to four equivalent Cu(1), two equivalent Ge(1), two equivalent Ge(4), and four equivalent Ge(2) atoms to form distorted HfCu4Ge8 cuboctahedra that share corners with four equivalent Hf(1)Cu4Ge8 cuboctahedra, edges with four equivalent Hf(1)Cu4Ge8 cuboctahedra, edges with eight equivalent Cu(1)Hf4Cu4Ge4 cuboctahedra, faces with four equivalent Hf(1)Cu4Ge8 cuboctahedra, and faces with four equivalent Cu(1)Hf4Cu4Ge4 cuboctahedra. In the second Hf site, Hf(2) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(4), and six equivalent Ge(3) atoms. Cu(1) is bonded to four equivalent Hf(1), four equivalent Cu(1), and four equivalent Ge(2) atoms to form distorted CuHf4Cu4Ge4 cuboctahedra that share corners with four equivalent Cu(1)Hf4Cu4Ge4 cuboctahedra, edges with eight equivalent Hf(1)Cu4Ge8 cuboctahedra, faces with four equivalent Hf(1)Cu4Ge8 cuboctahedra, and faces with eight equivalent Cu(1)Hf4Cu4Ge4 cuboctahedra. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Hf(1), two equivalent Hf(2), and four equivalent Ge(4) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to four equivalent Hf(1) and four equivalent Cu(1) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to six equivalent Hf(2) and two equivalent Ge(3) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to two equivalent Hf(1), two equivalent Hf(2), and four equivalent Ge(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Hf2CuGe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.680
_cell_length_b   16.680
_cell_length_c   3.795
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   166.850
_symmetry_Int_Tables_number   1
_cell_volume   240.212
_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
  Hf  Hf0  1  0.322  0.678  0.250  1.0
  Hf  Hf1  1  0.678  0.322  0.750  1.0
  Hf  Hf2  1  0.047  0.953  0.250  1.0
  Hf  Hf3  1  0.953  0.047  0.750  1.0
  Cu  Cu4  1  0.250  0.750  0.750  1.0
  Cu  Cu5  1  0.750  0.250  0.250  1.0
  Ge  Ge6  1  0.887  0.113  0.250  1.0
  Ge  Ge7  1  0.113  0.887  0.750  1.0
  Ge  Ge8  1  0.201  0.799  0.250  1.0
  Ge  Ge9  1  0.799  0.201  0.750  1.0
  Ge  Ge10  1  0.528  0.472  0.750  1.0
  Ge  Ge11  1  0.472  0.528  0.250  1.0
  Ge  Ge12  1  0.387  0.613  0.750  1.0
  Ge  Ge13  1  0.613  0.387  0.250  1.0
[/CIF]
.
The structure described by CuGe4Hf2 is Parent of FeAs superconductors-derived structured and crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded to four equivalent Cu(1), two equivalent Ge(1), two equivalent Ge(4), and four equivalent Ge(2) atoms to form distorted HfCu4Ge8 cuboctahedra that share corners with four equivalent Hf(1)Cu4Ge8 cuboctahedra, edges with four equivalent Hf(1)Cu4Ge8 cuboctahedra, edges with eight equivalent Cu(1)Hf4Cu4Ge4 cuboctahedra, faces with four equivalent Hf(1)Cu4Ge8 cuboctahedra, and faces with four equivalent Cu(1)Hf4Cu4Ge4 cuboctahedra. In the second Hf site, Hf(2) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(4), and six equivalent Ge(3) atoms. Cu(1) is bonded to four equivalent Hf(1), four equivalent Cu(1), and four equivalent Ge(2) atoms to form distorted CuHf4Cu4Ge4 cuboctahedra that share corners with four equivalent Cu(1)Hf4Cu4Ge4 cuboctahedra, edges with eight equivalent Hf(1)Cu4Ge8 cuboctahedra, faces with four equivalent Hf(1)Cu4Ge8 cuboctahedra, and faces with eight equivalent Cu(1)Hf4Cu4Ge4 cuboctahedra. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Hf(1), two equivalent Hf(2), and four equivalent Ge(4) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to four equivalent Hf(1) and four equivalent Cu(1) atoms. In the third Ge site, Ge(3) is bonded in a 8-coordinate geometry to six equivalent Hf(2) and two equivalent Ge(3) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to two equivalent Hf(1), two equivalent Hf(2), and four equivalent Ge(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Hf2CuGe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.680
_cell_length_b   16.680
_cell_length_c   3.795
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   166.850
_symmetry_Int_Tables_number   1
_cell_volume   240.212
_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
  Hf  Hf0  1  0.322  0.678  0.250  1.0
  Hf  Hf1  1  0.678  0.322  0.750  1.0
  Hf  Hf2  1  0.047  0.953  0.250  1.0
  Hf  Hf3  1  0.953  0.047  0.750  1.0
  Cu  Cu4  1  0.250  0.750  0.750  1.0
  Cu  Cu5  1  0.750  0.250  0.250  1.0
  Ge  Ge6  1  0.887  0.113  0.250  1.0
  Ge  Ge7  1  0.113  0.887  0.750  1.0
  Ge  Ge8  1  0.201  0.799  0.250  1.0
  Ge  Ge9  1  0.799  0.201  0.750  1.0
  Ge  Ge10  1  0.528  0.472  0.750  1.0
  Ge  Ge11  1  0.472  0.528  0.250  1.0
  Ge  Ge12  1  0.387  0.613  0.750  1.0
  Ge  Ge13  1  0.613  0.387  0.250  1.0
[/CIF]
.