The crystal structure described by Sr3LaTaAl3O12 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Al(1)O6 octahedra, faces with two equivalent Al(2)O6 octahedra, and faces with two equivalent Al(3)O6 octahedra. In the second Sr site, Sr(2) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(3), and four equivalent O(4) atoms to form SrO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, corners with eight equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Al(1)O6 octahedra, faces with two equivalent Al(2)O6 octahedra, and faces with two equivalent Al(3)O6 octahedra. La(1) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(1), and four equivalent O(2) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, corners with eight equivalent Sr(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Al(1)O6 octahedra, faces with two equivalent Al(2)O6 octahedra, and faces with two equivalent Al(3)O6 octahedra. Ta(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form TaO6 octahedra that share corners with two equivalent Al(2)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-4°. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form AlO6 octahedra that share corners with two equivalent Al(3)O6 octahedra, corners with four equivalent Ta(1)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-4°. In the second Al site, Al(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form AlO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with four equivalent Al(3)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the third Al site, Al(3) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form AlO6 octahedra that share corners with two equivalent Al(1)O6 octahedra, corners with four equivalent Al(2)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent La(1), one Ta(1), and one Al(1) atom. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent La(1), one Al(2), and one Al(3) atom to form distorted OSr2La2Al2 octahedra that share corners with two equivalent O(4)Sr4Al2 octahedra, edges with two equivalent O(2)Sr2La2Al2 octahedra, faces with two equivalent O(2)Sr2La2Al2 octahedra, and faces with two equivalent O(4)Sr4Al2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(2), one Ta(1), and one Al(1) atom. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Al(2), and one Al(3) atom to form distorted OSr4Al2 octahedra that share corners with two equivalent O(2)Sr2La2Al2 octahedra, edges with two equivalent O(4)Sr4Al2 octahedra, faces with two equivalent O(2)Sr2La2Al2 octahedra, and faces with two equivalent O(4)Sr4Al2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Sr(2), two equivalent Sr(1), one La(1), one Ta(1), and one Al(2) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Sr(2), two equivalent Sr(1), one La(1), one Al(1), and one Al(3) atom. is represented by the CIF file [CIF]
data_Sr3LaTaAl3O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.751
_cell_length_b   7.751
_cell_length_c   7.802
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.316
_symmetry_Int_Tables_number   1
_cell_volume   468.731
_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
  Sr  Sr0  1  0.500  0.000  0.262  1.0
  Sr  Sr1  1  0.500  0.000  0.738  1.0
  Sr  Sr2  1  0.000  0.500  0.262  1.0
  Sr  Sr3  1  0.000  0.000  0.262  1.0
  Sr  Sr4  1  0.000  0.500  0.738  1.0
  Sr  Sr5  1  0.000  0.000  0.738  1.0
  La  La6  1  0.500  0.500  0.264  1.0
  La  La7  1  0.500  0.500  0.736  1.0
  Ta  Ta8  1  0.753  0.247  0.000  1.0
  Ta  Ta9  1  0.247  0.753  0.000  1.0
  Al  Al10  1  0.750  0.750  0.000  1.0
  Al  Al11  1  0.752  0.248  0.500  1.0
  Al  Al12  1  0.753  0.753  0.500  1.0
  Al  Al13  1  0.250  0.250  0.000  1.0
  Al  Al14  1  0.247  0.247  0.500  1.0
  Al  Al15  1  0.248  0.752  0.500  1.0
  O  O16  1  0.504  0.745  0.000  1.0
  O  O17  1  0.496  0.255  0.000  1.0
  O  O18  1  0.499  0.742  0.500  1.0
  O  O19  1  0.501  0.258  0.500  1.0
  O  O20  1  0.994  0.749  0.000  1.0
  O  O21  1  0.006  0.251  0.000  1.0
  O  O22  1  0.001  0.750  0.500  1.0
  O  O23  1  0.999  0.250  0.500  1.0
  O  O24  1  0.746  0.254  0.255  1.0
  O  O25  1  0.745  0.745  0.250  1.0
  O  O26  1  0.746  0.254  0.745  1.0
  O  O27  1  0.745  0.745  0.750  1.0
  O  O28  1  0.255  0.255  0.250  1.0
  O  O29  1  0.254  0.746  0.255  1.0
  O  O30  1  0.255  0.255  0.750  1.0
  O  O31  1  0.254  0.746  0.745  1.0
  O  O32  1  0.745  0.504  0.000  1.0
  O  O33  1  0.749  0.994  0.000  1.0
  O  O34  1  0.742  0.499  0.500  1.0
  O  O35  1  0.750  0.001  0.500  1.0
  O  O36  1  0.255  0.496  0.000  1.0
  O  O37  1  0.251  0.006  0.000  1.0
  O  O38  1  0.258  0.501  0.500  1.0
  O  O39  1  0.250  0.999  0.500  1.0
[/CIF]
.
The crystal structure described by Sr3LaTaAl3O12 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Al(1)O6 octahedra, faces with two equivalent Al(2)O6 octahedra, and faces with two equivalent Al(3)O6 octahedra. In the second Sr site, Sr(2) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(3), and four equivalent O(4) atoms to form SrO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, corners with eight equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Al(1)O6 octahedra, faces with two equivalent Al(2)O6 octahedra, and faces with two equivalent Al(3)O6 octahedra. La(1) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(1), and four equivalent O(2) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, corners with eight equivalent Sr(1)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Al(1)O6 octahedra, faces with two equivalent Al(2)O6 octahedra, and faces with two equivalent Al(3)O6 octahedra. Ta(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form TaO6 octahedra that share corners with two equivalent Al(2)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-4°. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form AlO6 octahedra that share corners with two equivalent Al(3)O6 octahedra, corners with four equivalent Ta(1)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-4°. In the second Al site, Al(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form AlO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with four equivalent Al(3)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the third Al site, Al(3) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms to form AlO6 octahedra that share corners with two equivalent Al(1)O6 octahedra, corners with four equivalent Al(2)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent La(1), one Ta(1), and one Al(1) atom. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent La(1), one Al(2), and one Al(3) atom to form distorted OSr2La2Al2 octahedra that share corners with two equivalent O(4)Sr4Al2 octahedra, edges with two equivalent O(2)Sr2La2Al2 octahedra, faces with two equivalent O(2)Sr2La2Al2 octahedra, and faces with two equivalent O(4)Sr4Al2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(2), one Ta(1), and one Al(1) atom. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Al(2), and one Al(3) atom to form distorted OSr4Al2 octahedra that share corners with two equivalent O(2)Sr2La2Al2 octahedra, edges with two equivalent O(4)Sr4Al2 octahedra, faces with two equivalent O(2)Sr2La2Al2 octahedra, and faces with two equivalent O(4)Sr4Al2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Sr(2), two equivalent Sr(1), one La(1), one Ta(1), and one Al(2) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Sr(2), two equivalent Sr(1), one La(1), one Al(1), and one Al(3) atom. is represented by the CIF file [CIF]
data_Sr3LaTaAl3O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.751
_cell_length_b   7.751
_cell_length_c   7.802
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.316
_symmetry_Int_Tables_number   1
_cell_volume   468.731
_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
  Sr  Sr0  1  0.500  0.000  0.262  1.0
  Sr  Sr1  1  0.500  0.000  0.738  1.0
  Sr  Sr2  1  0.000  0.500  0.262  1.0
  Sr  Sr3  1  0.000  0.000  0.262  1.0
  Sr  Sr4  1  0.000  0.500  0.738  1.0
  Sr  Sr5  1  0.000  0.000  0.738  1.0
  La  La6  1  0.500  0.500  0.264  1.0
  La  La7  1  0.500  0.500  0.736  1.0
  Ta  Ta8  1  0.753  0.247  0.000  1.0
  Ta  Ta9  1  0.247  0.753  0.000  1.0
  Al  Al10  1  0.750  0.750  0.000  1.0
  Al  Al11  1  0.752  0.248  0.500  1.0
  Al  Al12  1  0.753  0.753  0.500  1.0
  Al  Al13  1  0.250  0.250  0.000  1.0
  Al  Al14  1  0.247  0.247  0.500  1.0
  Al  Al15  1  0.248  0.752  0.500  1.0
  O  O16  1  0.504  0.745  0.000  1.0
  O  O17  1  0.496  0.255  0.000  1.0
  O  O18  1  0.499  0.742  0.500  1.0
  O  O19  1  0.501  0.258  0.500  1.0
  O  O20  1  0.994  0.749  0.000  1.0
  O  O21  1  0.006  0.251  0.000  1.0
  O  O22  1  0.001  0.750  0.500  1.0
  O  O23  1  0.999  0.250  0.500  1.0
  O  O24  1  0.746  0.254  0.255  1.0
  O  O25  1  0.745  0.745  0.250  1.0
  O  O26  1  0.746  0.254  0.745  1.0
  O  O27  1  0.745  0.745  0.750  1.0
  O  O28  1  0.255  0.255  0.250  1.0
  O  O29  1  0.254  0.746  0.255  1.0
  O  O30  1  0.255  0.255  0.750  1.0
  O  O31  1  0.254  0.746  0.745  1.0
  O  O32  1  0.745  0.504  0.000  1.0
  O  O33  1  0.749  0.994  0.000  1.0
  O  O34  1  0.742  0.499  0.500  1.0
  O  O35  1  0.750  0.001  0.500  1.0
  O  O36  1  0.255  0.496  0.000  1.0
  O  O37  1  0.251  0.006  0.000  1.0
  O  O38  1  0.258  0.501  0.500  1.0
  O  O39  1  0.250  0.999  0.500  1.0
[/CIF]
.