The structure described by Dy3Cu11Si4 crystallizes in the hexagonal P6_3/mmc space group. Dy(1) is bonded in a 15-coordinate geometry to two equivalent Cu(2), two equivalent Cu(3), six equivalent Cu(1), one Si(2), and four equivalent Si(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to three equivalent Dy(1), one Cu(3), two equivalent Cu(2), three equivalent Cu(1), one Si(2), and two equivalent Si(1) atoms. In the second Cu site, Cu(2) is bonded to two equivalent Dy(1), two equivalent Cu(2), two equivalent Cu(3), four equivalent Cu(1), and two equivalent Si(1) atoms to form distorted CuDy2Cu8Si2 cuboctahedra that share corners with four equivalent Cu(2)Dy2Cu8Si2 cuboctahedra, corners with four equivalent Si(1)Dy4Cu8 cuboctahedra, faces with two equivalent Cu(2)Dy2Cu8Si2 cuboctahedra, and faces with six equivalent Si(1)Dy4Cu8 cuboctahedra. In the third Cu site, Cu(3) is bonded in a 12-coordinate geometry to three equivalent Dy(1), three equivalent Cu(1), three equivalent Cu(2), and three equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(2) is bonded in a 9-coordinate geometry to three equivalent Dy(1) and six equivalent Cu(1) atoms. In the second Si site, Si(1) is bonded to four equivalent Dy(1), two equivalent Cu(2), two equivalent Cu(3), and four equivalent Cu(1) atoms to form SiDy4Cu8 cuboctahedra that share corners with four equivalent Cu(2)Dy2Cu8Si2 cuboctahedra, corners with four equivalent Si(1)Dy4Cu8 cuboctahedra, faces with six equivalent Cu(2)Dy2Cu8Si2 cuboctahedra, and faces with six equivalent Si(1)Dy4Cu8 cuboctahedra. is represented by the CIF card [CIF]
data_Dy3Cu11Si4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.425
_cell_length_b   8.425
_cell_length_c   8.609
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   529.244
_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
  Dy  Dy0  1  0.802  0.198  0.750  1.0
  Dy  Dy1  1  0.198  0.802  0.250  1.0
  Dy  Dy2  1  0.396  0.198  0.750  1.0
  Dy  Dy3  1  0.604  0.802  0.250  1.0
  Dy  Dy4  1  0.802  0.604  0.750  1.0
  Dy  Dy5  1  0.198  0.396  0.250  1.0
  Cu  Cu6  1  0.847  0.153  0.410  1.0
  Cu  Cu7  1  0.153  0.847  0.590  1.0
  Cu  Cu8  1  0.306  0.153  0.410  1.0
  Cu  Cu9  1  0.153  0.847  0.910  1.0
  Cu  Cu10  1  0.694  0.847  0.590  1.0
  Cu  Cu11  1  0.847  0.153  0.090  1.0
  Cu  Cu12  1  0.847  0.694  0.410  1.0
  Cu  Cu13  1  0.694  0.847  0.910  1.0
  Cu  Cu14  1  0.153  0.306  0.590  1.0
  Cu  Cu15  1  0.306  0.153  0.090  1.0
  Cu  Cu16  1  0.153  0.306  0.910  1.0
  Cu  Cu17  1  0.847  0.694  0.090  1.0
  Cu  Cu18  1  0.434  0.566  0.750  1.0
  Cu  Cu19  1  0.566  0.434  0.250  1.0
  Cu  Cu20  1  0.131  0.566  0.750  1.0
  Cu  Cu21  1  0.869  0.434  0.250  1.0
  Cu  Cu22  1  0.434  0.869  0.750  1.0
  Cu  Cu23  1  0.566  0.131  0.250  1.0
  Cu  Cu24  1  0.667  0.333  0.007  1.0
  Cu  Cu25  1  0.333  0.667  0.993  1.0
  Cu  Cu26  1  0.333  0.667  0.507  1.0
  Cu  Cu27  1  0.667  0.333  0.493  1.0
  Si  Si28  1  0.500  0.500  0.000  1.0
  Si  Si29  1  0.000  0.500  0.000  1.0
  Si  Si30  1  0.500  0.500  0.500  1.0
  Si  Si31  1  0.500  0.000  0.000  1.0
  Si  Si32  1  0.000  0.500  0.500  1.0
  Si  Si33  1  0.500  0.000  0.500  1.0
  Si  Si34  1  0.000  0.000  0.750  1.0
  Si  Si35  1  0.000  0.000  0.250  1.0
[/CIF]
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The structure described by Dy3Cu11Si4 crystallizes in the hexagonal P6_3/mmc space group. Dy(1) is bonded in a 15-coordinate geometry to two equivalent Cu(2), two equivalent Cu(3), six equivalent Cu(1), one Si(2), and four equivalent Si(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to three equivalent Dy(1), one Cu(3), two equivalent Cu(2), three equivalent Cu(1), one Si(2), and two equivalent Si(1) atoms. In the second Cu site, Cu(2) is bonded to two equivalent Dy(1), two equivalent Cu(2), two equivalent Cu(3), four equivalent Cu(1), and two equivalent Si(1) atoms to form distorted CuDy2Cu8Si2 cuboctahedra that share corners with four equivalent Cu(2)Dy2Cu8Si2 cuboctahedra, corners with four equivalent Si(1)Dy4Cu8 cuboctahedra, faces with two equivalent Cu(2)Dy2Cu8Si2 cuboctahedra, and faces with six equivalent Si(1)Dy4Cu8 cuboctahedra. In the third Cu site, Cu(3) is bonded in a 12-coordinate geometry to three equivalent Dy(1), three equivalent Cu(1), three equivalent Cu(2), and three equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(2) is bonded in a 9-coordinate geometry to three equivalent Dy(1) and six equivalent Cu(1) atoms. In the second Si site, Si(1) is bonded to four equivalent Dy(1), two equivalent Cu(2), two equivalent Cu(3), and four equivalent Cu(1) atoms to form SiDy4Cu8 cuboctahedra that share corners with four equivalent Cu(2)Dy2Cu8Si2 cuboctahedra, corners with four equivalent Si(1)Dy4Cu8 cuboctahedra, faces with six equivalent Cu(2)Dy2Cu8Si2 cuboctahedra, and faces with six equivalent Si(1)Dy4Cu8 cuboctahedra. is represented by the CIF card [CIF]
data_Dy3Cu11Si4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.425
_cell_length_b   8.425
_cell_length_c   8.609
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   529.244
_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
  Dy  Dy0  1  0.802  0.198  0.750  1.0
  Dy  Dy1  1  0.198  0.802  0.250  1.0
  Dy  Dy2  1  0.396  0.198  0.750  1.0
  Dy  Dy3  1  0.604  0.802  0.250  1.0
  Dy  Dy4  1  0.802  0.604  0.750  1.0
  Dy  Dy5  1  0.198  0.396  0.250  1.0
  Cu  Cu6  1  0.847  0.153  0.410  1.0
  Cu  Cu7  1  0.153  0.847  0.590  1.0
  Cu  Cu8  1  0.306  0.153  0.410  1.0
  Cu  Cu9  1  0.153  0.847  0.910  1.0
  Cu  Cu10  1  0.694  0.847  0.590  1.0
  Cu  Cu11  1  0.847  0.153  0.090  1.0
  Cu  Cu12  1  0.847  0.694  0.410  1.0
  Cu  Cu13  1  0.694  0.847  0.910  1.0
  Cu  Cu14  1  0.153  0.306  0.590  1.0
  Cu  Cu15  1  0.306  0.153  0.090  1.0
  Cu  Cu16  1  0.153  0.306  0.910  1.0
  Cu  Cu17  1  0.847  0.694  0.090  1.0
  Cu  Cu18  1  0.434  0.566  0.750  1.0
  Cu  Cu19  1  0.566  0.434  0.250  1.0
  Cu  Cu20  1  0.131  0.566  0.750  1.0
  Cu  Cu21  1  0.869  0.434  0.250  1.0
  Cu  Cu22  1  0.434  0.869  0.750  1.0
  Cu  Cu23  1  0.566  0.131  0.250  1.0
  Cu  Cu24  1  0.667  0.333  0.007  1.0
  Cu  Cu25  1  0.333  0.667  0.993  1.0
  Cu  Cu26  1  0.333  0.667  0.507  1.0
  Cu  Cu27  1  0.667  0.333  0.493  1.0
  Si  Si28  1  0.500  0.500  0.000  1.0
  Si  Si29  1  0.000  0.500  0.000  1.0
  Si  Si30  1  0.500  0.500  0.500  1.0
  Si  Si31  1  0.500  0.000  0.000  1.0
  Si  Si32  1  0.000  0.500  0.500  1.0
  Si  Si33  1  0.500  0.000  0.500  1.0
  Si  Si34  1  0.000  0.000  0.750  1.0
  Si  Si35  1  0.000  0.000  0.250  1.0
[/CIF]
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