The material described by Zr4Al11Si is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Zr sites. In the first Zr site, Zr(1) is bonded to two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), two equivalent Al(7), and four equivalent Al(2) atoms to form ZrAl12 cuboctahedra that share corners with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, corners with eight equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra,  a faceface with one Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Al(7)Zr4Al8 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, and faces with five equivalent Zr(1)Al12 cuboctahedra. In the second Zr site, Zr(2) is bonded to two equivalent Al(3), two equivalent Al(4), two equivalent Al(6), four equivalent Al(1), and two equivalent Si(1) atoms to form ZrAl10Si2 cuboctahedra that share corners with four equivalent Al(2)Zr4Al8 cuboctahedra, corners with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Al(2)Zr4Al8 cuboctahedra, faces with two equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Si(1)Zr4Al8 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with five equivalent Zr(2)Al10Si2 cuboctahedra. There are seven inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Zr(2), two equivalent Al(3), two equivalent Al(4), two equivalent Al(6), and two equivalent Si(1) atoms to form distorted AlZr4Al6Si2 cuboctahedra that share corners with four equivalent Zr(1)Al12 cuboctahedra, corners with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Zr(1)Al12 cuboctahedra, faces with two equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Si(1)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, and faces with five equivalent Al(1)Zr4Al6Si2 cuboctahedra. In the second Al site, Al(2) is bonded to four equivalent Zr(1), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), and two equivalent Al(7) atoms to form distorted AlZr4Al8 cuboctahedra that share corners with four equivalent Zr(2)Al10Si2 cuboctahedra, corners with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra,  a faceface with one Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Al(7)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, and faces with five equivalent Al(2)Zr4Al8 cuboctahedra. In the third Al site, Al(3) is bonded to two equivalent Zr(1), two equivalent Zr(2), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(4) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, corners with four equivalent Al(3)Zr4Al8 cuboctahedra, corners with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Al(6)Zr4Al4Si4 cuboctahedra,  a faceface with one Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Zr(1)Al12 cuboctahedra, faces with two equivalent Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(3)Zr4Al8 cuboctahedra, and faces with four equivalent Al(4)Zr4Al8 cuboctahedra. In the fourth Al site, Al(4) is bonded to two equivalent Zr(1), two equivalent Zr(2), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(3) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(4)Zr4Al8 cuboctahedra, corners with four equivalent Al(7)Zr4Al8 cuboctahedra, corners with four equivalent Si(1)Zr4Al8 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra,  a faceface with one Al(7)Zr4Al8 cuboctahedra,  a faceface with one Si(1)Zr4Al8 cuboctahedra, faces with two equivalent Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Zr(1)Al12 cuboctahedra, faces with two equivalent Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(3)Zr4Al8 cuboctahedra, and faces with four equivalent Al(4)Zr4Al8 cuboctahedra. In the fifth Al site, Al(5) is bonded to four equivalent Zr(1), four equivalent Al(2), and four equivalent Al(7) atoms to form distorted AlZr4Al8 cuboctahedra that share corners with four equivalent Al(5)Zr4Al8 cuboctahedra, corners with eight equivalent Al(3)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(1)Al12 cuboctahedra, edges with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with eight equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(5)Zr4Al8 cuboctahedra, and faces with four equivalent Al(7)Zr4Al8 cuboctahedra. In the sixth Al site, Al(6) is bonded to four equivalent Zr(2), four equivalent Al(1), and four equivalent Si(1) atoms to form distorted AlZr4Al4Si4 cuboctahedra that share corners with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, corners with eight equivalent Al(3)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with eight equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, faces with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with four equivalent Si(1)Zr4Al8 cuboctahedra. In the seventh Al site, Al(7) is bonded to four equivalent Zr(1), four equivalent Al(2), and four equivalent Al(5) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(7)Zr4Al8 cuboctahedra, corners with eight equivalent Al(4)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(1)Al12 cuboctahedra, edges with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with eight equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(5)Zr4Al8 cuboctahedra, and faces with four equivalent Al(7)Zr4Al8 cuboctahedra. Si(1) is bonded to four equivalent Zr(2), four equivalent Al(1), and four equivalent Al(6) atoms to form SiZr4Al8 cuboctahedra that share corners with four equivalent Si(1)Zr4Al8 cuboctahedra, corners with eight equivalent Al(4)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with eight equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, faces with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with four equivalent Si(1)Zr4Al8 cuboctahedra. is represented by the CIF card [CIF]
data_Zr4Al11Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.984
_cell_length_b   4.019
_cell_length_c   17.232
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   275.963
_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
  Zr  Zr0  1  0.500  0.500  0.380  1.0
  Zr  Zr1  1  0.000  0.000  0.885  1.0
  Zr  Zr2  1  0.000  0.000  0.115  1.0
  Zr  Zr3  1  0.500  0.500  0.620  1.0
  Al  Al4  1  0.500  0.500  0.126  1.0
  Al  Al5  1  0.000  0.000  0.625  1.0
  Al  Al6  1  0.000  0.000  0.375  1.0
  Al  Al7  1  0.500  0.500  0.874  1.0
  Al  Al8  1  0.000  0.500  0.250  1.0
  Al  Al9  1  0.500  0.000  0.750  1.0
  Al  Al10  1  0.500  0.000  0.250  1.0
  Al  Al11  1  0.000  0.500  0.750  1.0
  Al  Al12  1  0.000  0.500  0.500  1.0
  Al  Al13  1  0.000  0.500  0.000  1.0
  Al  Al14  1  0.500  0.000  0.500  1.0
  Si  Si15  1  0.500  0.000  0.000  1.0
[/CIF]
.
The material described by Zr4Al11Si is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Zr sites. In the first Zr site, Zr(1) is bonded to two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), two equivalent Al(7), and four equivalent Al(2) atoms to form ZrAl12 cuboctahedra that share corners with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, corners with eight equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra,  a faceface with one Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Al(7)Zr4Al8 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, and faces with five equivalent Zr(1)Al12 cuboctahedra. In the second Zr site, Zr(2) is bonded to two equivalent Al(3), two equivalent Al(4), two equivalent Al(6), four equivalent Al(1), and two equivalent Si(1) atoms to form ZrAl10Si2 cuboctahedra that share corners with four equivalent Al(2)Zr4Al8 cuboctahedra, corners with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Al(2)Zr4Al8 cuboctahedra, faces with two equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Si(1)Zr4Al8 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with five equivalent Zr(2)Al10Si2 cuboctahedra. There are seven inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Zr(2), two equivalent Al(3), two equivalent Al(4), two equivalent Al(6), and two equivalent Si(1) atoms to form distorted AlZr4Al6Si2 cuboctahedra that share corners with four equivalent Zr(1)Al12 cuboctahedra, corners with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Zr(1)Al12 cuboctahedra, faces with two equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Si(1)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, and faces with five equivalent Al(1)Zr4Al6Si2 cuboctahedra. In the second Al site, Al(2) is bonded to four equivalent Zr(1), two equivalent Al(3), two equivalent Al(4), two equivalent Al(5), and two equivalent Al(7) atoms to form distorted AlZr4Al8 cuboctahedra that share corners with four equivalent Zr(2)Al10Si2 cuboctahedra, corners with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(3)Zr4Al8 cuboctahedra, edges with four equivalent Al(4)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra,  a faceface with one Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Al(7)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, and faces with five equivalent Al(2)Zr4Al8 cuboctahedra. In the third Al site, Al(3) is bonded to two equivalent Zr(1), two equivalent Zr(2), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(4) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, corners with four equivalent Al(3)Zr4Al8 cuboctahedra, corners with four equivalent Al(5)Zr4Al8 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(7)Zr4Al8 cuboctahedra, edges with four equivalent Si(1)Zr4Al8 cuboctahedra,  a faceface with one Al(6)Zr4Al4Si4 cuboctahedra,  a faceface with one Al(5)Zr4Al8 cuboctahedra, faces with two equivalent Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Zr(1)Al12 cuboctahedra, faces with two equivalent Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(3)Zr4Al8 cuboctahedra, and faces with four equivalent Al(4)Zr4Al8 cuboctahedra. In the fourth Al site, Al(4) is bonded to two equivalent Zr(1), two equivalent Zr(2), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(3) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(4)Zr4Al8 cuboctahedra, corners with four equivalent Al(7)Zr4Al8 cuboctahedra, corners with four equivalent Si(1)Zr4Al8 cuboctahedra, edges with four equivalent Zr(2)Al10Si2 cuboctahedra, edges with four equivalent Zr(1)Al12 cuboctahedra, edges with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, edges with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with four equivalent Al(2)Zr4Al8 cuboctahedra, edges with four equivalent Al(5)Zr4Al8 cuboctahedra,  a faceface with one Al(7)Zr4Al8 cuboctahedra,  a faceface with one Si(1)Zr4Al8 cuboctahedra, faces with two equivalent Zr(2)Al10Si2 cuboctahedra, faces with two equivalent Zr(1)Al12 cuboctahedra, faces with two equivalent Al(1)Zr4Al6Si2 cuboctahedra, faces with two equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(3)Zr4Al8 cuboctahedra, and faces with four equivalent Al(4)Zr4Al8 cuboctahedra. In the fifth Al site, Al(5) is bonded to four equivalent Zr(1), four equivalent Al(2), and four equivalent Al(7) atoms to form distorted AlZr4Al8 cuboctahedra that share corners with four equivalent Al(5)Zr4Al8 cuboctahedra, corners with eight equivalent Al(3)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(1)Al12 cuboctahedra, edges with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with eight equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(5)Zr4Al8 cuboctahedra, and faces with four equivalent Al(7)Zr4Al8 cuboctahedra. In the sixth Al site, Al(6) is bonded to four equivalent Zr(2), four equivalent Al(1), and four equivalent Si(1) atoms to form distorted AlZr4Al4Si4 cuboctahedra that share corners with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, corners with eight equivalent Al(3)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with eight equivalent Al(4)Zr4Al8 cuboctahedra, faces with two equivalent Al(3)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, faces with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with four equivalent Si(1)Zr4Al8 cuboctahedra. In the seventh Al site, Al(7) is bonded to four equivalent Zr(1), four equivalent Al(2), and four equivalent Al(5) atoms to form AlZr4Al8 cuboctahedra that share corners with four equivalent Al(7)Zr4Al8 cuboctahedra, corners with eight equivalent Al(4)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(1)Al12 cuboctahedra, edges with eight equivalent Al(2)Zr4Al8 cuboctahedra, edges with eight equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with four equivalent Zr(1)Al12 cuboctahedra, faces with four equivalent Al(2)Zr4Al8 cuboctahedra, faces with four equivalent Al(5)Zr4Al8 cuboctahedra, and faces with four equivalent Al(7)Zr4Al8 cuboctahedra. Si(1) is bonded to four equivalent Zr(2), four equivalent Al(1), and four equivalent Al(6) atoms to form SiZr4Al8 cuboctahedra that share corners with four equivalent Si(1)Zr4Al8 cuboctahedra, corners with eight equivalent Al(4)Zr4Al8 cuboctahedra, edges with eight equivalent Zr(2)Al10Si2 cuboctahedra, edges with eight equivalent Al(1)Zr4Al6Si2 cuboctahedra, edges with eight equivalent Al(3)Zr4Al8 cuboctahedra, faces with two equivalent Al(4)Zr4Al8 cuboctahedra, faces with four equivalent Zr(2)Al10Si2 cuboctahedra, faces with four equivalent Al(6)Zr4Al4Si4 cuboctahedra, faces with four equivalent Al(1)Zr4Al6Si2 cuboctahedra, and faces with four equivalent Si(1)Zr4Al8 cuboctahedra. is represented by the CIF card [CIF]
data_Zr4Al11Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.984
_cell_length_b   4.019
_cell_length_c   17.232
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   275.963
_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
  Zr  Zr0  1  0.500  0.500  0.380  1.0
  Zr  Zr1  1  0.000  0.000  0.885  1.0
  Zr  Zr2  1  0.000  0.000  0.115  1.0
  Zr  Zr3  1  0.500  0.500  0.620  1.0
  Al  Al4  1  0.500  0.500  0.126  1.0
  Al  Al5  1  0.000  0.000  0.625  1.0
  Al  Al6  1  0.000  0.000  0.375  1.0
  Al  Al7  1  0.500  0.500  0.874  1.0
  Al  Al8  1  0.000  0.500  0.250  1.0
  Al  Al9  1  0.500  0.000  0.750  1.0
  Al  Al10  1  0.500  0.000  0.250  1.0
  Al  Al11  1  0.000  0.500  0.750  1.0
  Al  Al12  1  0.000  0.500  0.500  1.0
  Al  Al13  1  0.000  0.500  0.000  1.0
  Al  Al14  1  0.500  0.000  0.500  1.0
  Si  Si15  1  0.500  0.000  0.000  1.0
[/CIF]
.