The structure described by Sr3LaTa2(CoO6)2 is (Cubic) Perovskite-derived structured and crystallizes in the triclinic P1 space group. There are six inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(1), one O(18), one O(19), one O(20), one O(22), one O(23), one O(3), one O(4), two equivalent O(2), and two equivalent O(21) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra,  a faceface with one Sr(6)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with four equivalent Sr(5)O12 cuboctahedra, faces with two equivalent Ta(2)O6 octahedra, faces with two equivalent Ta(3)O6 octahedra, faces with two equivalent Co(3)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(10), one O(11), one O(13), one O(14), one O(15), one O(6), one O(7), one O(8), two equivalent O(12), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra,  a faceface with one Sr(6)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with four equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Ta(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(2)O6 octahedra. In the third Sr site, Sr(3) is bonded to one O(10), one O(11), one O(13), one O(14), one O(15), one O(6), one O(7), one O(8), two equivalent O(12), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(6)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one Sr(4)O12 cuboctahedra,  a faceface with one La(1)O12 cuboctahedra, faces with four equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Ta(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(2)O6 octahedra. In the fourth Sr site, Sr(4) is bonded to one O(1), one O(11), one O(13), one O(14), one O(15), one O(18), one O(19), one O(20), two equivalent O(16), and two equivalent O(17) 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 Sr(4)O12 cuboctahedra,  a faceface with one Sr(3)O12 cuboctahedra,  a faceface with one Sr(5)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Ta(2)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Co(3)O6 octahedra. In the fifth Sr site, Sr(5) is bonded to one O(1), one O(18), one O(19), one O(20), one O(22), one O(23), one O(3), one O(4), two equivalent O(2), and two equivalent O(21) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(5)O12 cuboctahedra, corners with four equivalent Sr(6)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one Sr(4)O12 cuboctahedra,  a faceface with one La(1)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Ta(2)O6 octahedra, faces with two equivalent Ta(3)O6 octahedra, faces with two equivalent Co(3)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. In the sixth Sr site, Sr(6) is bonded to one O(10), one O(22), one O(23), one O(3), one O(4), one O(6), one O(7), one O(8), two equivalent O(24), and two equivalent O(5) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(5)O12 cuboctahedra, corners with four equivalent Sr(6)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Ta(3)O6 octahedra, faces with two equivalent Ta(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. There are two inequivalent La sites. In the first La site, La(1) is bonded to one O(10), one O(22), one O(23), one O(3), one O(4), one O(6), one O(7), one O(8), two equivalent O(24), and two equivalent O(5) atoms to form LaO12 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,  a faceface with one Sr(3)O12 cuboctahedra,  a faceface with one Sr(5)O12 cuboctahedra, faces with four equivalent Sr(6)O12 cuboctahedra, faces with two equivalent Ta(3)O6 octahedra, faces with two equivalent Ta(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. In the second La site, La(2) is bonded to one O(1), one O(11), one O(13), one O(14), one O(15), one O(18), one O(19), one O(20), two equivalent O(16), and two equivalent O(17) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(5)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Ta(2)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Co(3)O6 octahedra. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(11), one O(13), one O(14), one O(15), one O(17), and one O(9) atom to form TaO6 octahedra that share  a cornercorner with one Ta(2)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with four equivalent Co(2)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-9°. In the second Ta site, Ta(2) is bonded to one O(1), one O(17), one O(18), one O(19), one O(20), and one O(21) atom to form TaO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra,  a cornercorner with one Ta(3)O6 octahedra, corners with four equivalent Co(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(5)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-10°. In the third Ta site, Ta(3) is bonded to one O(21), one O(22), one O(23), one O(3), one O(4), and one O(5) atom to form TaO6 octahedra that share  a cornercorner with one Ta(2)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with four equivalent Co(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(5)O12 cuboctahedra, faces with two equivalent Sr(6)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-6°. In the fourth Ta site, Ta(4) is bonded to one O(10), one O(12), one O(24), one O(6), one O(7), and one O(8) atom to form TaO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(6)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-8°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra,  a cornercorner with one Ta(3)O6 octahedra, corners with four equivalent Ta(4)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(6)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-8°. In the second Co site, Co(2) is bonded to one O(11), one O(12), one O(13), one O(14), one O(15), and one O(16) atom to form CoO6 octahedra that share  a cornercorner with one Ta(4)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with four equivalent Ta(1)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-9°. In the third Co site, Co(3) is bonded to one O(1), one O(16), one O(18), one O(19), one O(2), and one O(20) atom to form CoO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with four equivalent Ta(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(5)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-10°. In the fourth Co site, Co(4) is bonded to one O(2), one O(22), one O(23), one O(24), one O(3), and one O(4) atom to form CoO6 octahedra that share  a cornercorner with one Ta(4)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with four equivalent Ta(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(5)O12 cuboctahedra, faces with two equivalent Sr(6)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-6°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(4), one Sr(5), one La(2), one Ta(2), and one Co(3) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(5), one Co(3), and one Co(4) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(5), one Sr(6), one La(1), one Ta(3), and one Co(4) atom to form a mixture of distorted edge, corner, and face-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(5), one Sr(6), one La(1), one Ta(3), and one Co(4) atom to form a mixture of distorted corner and face-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 2-63°. In the fifth O site, O(5) is bonded in a distorted linear geometry to two equivalent Sr(6), two equivalent La(1), one Ta(3), and one Co(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(3), one Sr(6), one La(1), one Ta(4), and one Co(1) atom. In the seventh O site, O(7) is bonded to one Sr(2), one Sr(3), one Sr(6), one La(1), one Ta(4), and one Co(1) atom to form distorted OSr3LaTaCo octahedra that share corners with two equivalent O(3)Sr3LaTaCo octahedra, corners with two equivalent O(4)Sr3LaTaCo octahedra, corners with two equivalent O(8)Sr3LaTaCo octahedra, corners with two equivalent O(12)Sr4TaCo octahedra,  an edgeedge with one O(23)Sr3LaTaCo octahedra, edges with two equivalent O(8)Sr3LaTaCo octahedra,  a faceface with one O(12)Sr4TaCo octahedra, and faces with two equivalent O(10)Sr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the eighth O site, O(8) is bonded to one Sr(2), one Sr(3), one Sr(6), one La(1), one Ta(4), and one Co(1) atom to form distorted OSr3LaTaCo octahedra that share corners with two equivalent O(23)Sr3LaTaCo octahedra, corners with two equivalent O(4)Sr3LaTaCo octahedra, corners with two equivalent O(7)Sr3LaTaCo octahedra, corners with two equivalent O(12)Sr4TaCo octahedra,  an edgeedge with one O(3)Sr3LaTaCo octahedra, edges with two equivalent O(7)Sr3LaTaCo octahedra,  a faceface with one O(12)Sr4TaCo octahedra, and faces with two equivalent O(10)Sr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the ninth O site, O(9) is bonded in a distorted linear geometry to two equivalent Sr(2), two equivalent Sr(3), one Ta(1), and one Co(1) atom. In the tenth O site, O(10) is bonded to one Sr(2), one Sr(3), one Sr(6), one La(1), one Ta(4), and one Co(1) atom to form distorted OSr3LaTaCo octahedra that share corners with two equivalent O(23)Sr3LaTaCo octahedra, corners with two equivalent O(3)Sr3LaTaCo octahedra, corners with two equivalent O(4)Sr3LaTaCo octahedra, corners with two equivalent O(12)Sr4TaCo octahedra,  a faceface with one O(12)Sr4TaCo octahedra, faces with two equivalent O(7)Sr3LaTaCo octahedra, and faces with two equivalent O(8)Sr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 2-62°. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one La(2), one Ta(1), and one Co(2) atom. In the twelfth O site, O(12) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Ta(4), and one Co(2) atom to form distorted OSr4TaCo octahedra that share corners with two equivalent O(10)Sr3LaTaCo octahedra, corners with two equivalent O(7)Sr3LaTaCo octahedra, corners with two equivalent O(8)Sr3LaTaCo octahedra, corners with four equivalent O(12)Sr4TaCo octahedra,  a faceface with one O(10)Sr3LaTaCo octahedra,  a faceface with one O(7)Sr3LaTaCo octahedra, and  a faceface with one O(8)Sr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 5-58°. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one La(2), one Ta(1), and one Co(2) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Sr(2), one Sr(3), one Sr(4), one La(2), one Ta(1), and one Co(2) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one La(2), one Ta(1), and one Co(2) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to two equivalent Sr(4), two equivalent La(2), one Co(2), and one Co(3) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to two equivalent Sr(4), two equivalent La(2), one Ta(1), and one Ta(2) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(4), one Sr(5), one La(2), one Ta(2), and one Co(3) atom. In the nineteenth O site, O(19) is bonded to one Sr(1), one Sr(4), one Sr(5), one La(2), one Ta(2), and one Co(3) atom to form a mixture of distorted edge and corner-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the twentieth O site, O(20) is bonded to one Sr(1), one Sr(4), one Sr(5), one La(2), one Ta(2), and one Co(3) atom to form a mixture of distorted edge and corner-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the twenty-first O site, O(21) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(5), one Ta(2), and one Ta(3) atom. In the twenty-second O site, O(22) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(5), one Sr(6), one La(1), one Ta(3), and one Co(4) atom. In the twenty-third O site, O(23) is bonded to one Sr(1), one Sr(5), one Sr(6), one La(1), one Ta(3), and one Co(4) atom to form a mixture of distorted edge, corner, and face-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the twenty-fourth O site, O(24) is bonded in a 2-coordinate geometry to two equivalent Sr(6), two equivalent La(1), one Ta(4), and one Co(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr3LaTa2(CoO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.711
_cell_length_b   5.716
_cell_length_c   15.946
_cell_angle_alpha   90.007
_cell_angle_beta   90.029
_cell_angle_gamma   90.017
_symmetry_Int_Tables_number   1
_cell_volume   520.469
_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  0.501  0.005  0.376  1.0
  Sr  Sr1  1  0.500  0.002  0.872  1.0
  Sr  Sr2  1  0.999  0.502  0.870  1.0
  Sr  Sr3  1  0.999  0.504  0.125  1.0
  Sr  Sr4  1  1.000  0.500  0.378  1.0
  Sr  Sr5  1  0.500  0.999  0.626  1.0
  La  La6  1  0.996  0.493  0.627  1.0
  La  La7  1  0.500  0.019  0.124  1.0
  Ta  Ta8  1  1.000  0.000  0.997  1.0
  Ta  Ta9  1  0.000  1.000  0.250  1.0
  Ta  Ta10  1  0.999  0.999  0.504  1.0
  Ta  Ta11  1  0.500  0.501  0.749  1.0
  Co  Co12  1  1.000  0.001  0.751  1.0
  Co  Co13  1  0.499  0.504  0.005  1.0
  Co  Co14  1  0.499  0.503  0.254  1.0
  Co  Co15  1  0.500  0.499  0.497  1.0
  O  O16  1  0.746  0.236  0.247  1.0
  O  O17  1  0.493  0.503  0.367  1.0
  O  O18  1  0.234  0.256  0.502  1.0
  O  O19  1  0.247  0.757  0.504  1.0
  O  O20  1  0.989  0.012  0.625  1.0
  O  O21  1  0.245  0.736  0.743  1.0
  O  O22  1  0.744  0.747  0.749  1.0
  O  O23  1  0.255  0.257  0.746  1.0
  O  O24  1  0.008  0.996  0.877  1.0
  O  O25  1  0.754  0.266  0.751  1.0
  O  O26  1  0.743  0.236  0.003  1.0
  O  O27  1  0.492  0.506  0.879  1.0
  O  O28  1  0.244  0.247  0.007  1.0
  O  O29  1  0.754  0.755  0.005  1.0
  O  O30  1  0.255  0.767  0.009  1.0
  O  O31  1  0.505  0.486  0.124  1.0
  O  O32  1  0.990  0.005  0.125  1.0
  O  O33  1  0.255  0.767  0.242  1.0
  O  O34  1  0.756  0.755  0.246  1.0
  O  O35  1  0.244  0.246  0.244  1.0
  O  O36  1  0.008  0.998  0.374  1.0
  O  O37  1  0.751  0.240  0.496  1.0
  O  O38  1  0.767  0.742  0.500  1.0
  O  O39  1  0.517  0.494  0.626  1.0
[/CIF]
.
The structure described by Sr3LaTa2(CoO6)2 is (Cubic) Perovskite-derived structured and crystallizes in the triclinic P1 space group. There are six inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(1), one O(18), one O(19), one O(20), one O(22), one O(23), one O(3), one O(4), two equivalent O(2), and two equivalent O(21) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra,  a faceface with one Sr(6)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with four equivalent Sr(5)O12 cuboctahedra, faces with two equivalent Ta(2)O6 octahedra, faces with two equivalent Ta(3)O6 octahedra, faces with two equivalent Co(3)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(10), one O(11), one O(13), one O(14), one O(15), one O(6), one O(7), one O(8), two equivalent O(12), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, corners with four equivalent Sr(4)O12 cuboctahedra, corners with four equivalent La(1)O12 cuboctahedra,  a faceface with one Sr(6)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with four equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Ta(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(2)O6 octahedra. In the third Sr site, Sr(3) is bonded to one O(10), one O(11), one O(13), one O(14), one O(15), one O(6), one O(7), one O(8), two equivalent O(12), and two equivalent O(9) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(6)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one Sr(4)O12 cuboctahedra,  a faceface with one La(1)O12 cuboctahedra, faces with four equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Ta(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(2)O6 octahedra. In the fourth Sr site, Sr(4) is bonded to one O(1), one O(11), one O(13), one O(14), one O(15), one O(18), one O(19), one O(20), two equivalent O(16), and two equivalent O(17) 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 Sr(4)O12 cuboctahedra,  a faceface with one Sr(3)O12 cuboctahedra,  a faceface with one Sr(5)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Ta(2)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Co(3)O6 octahedra. In the fifth Sr site, Sr(5) is bonded to one O(1), one O(18), one O(19), one O(20), one O(22), one O(23), one O(3), one O(4), two equivalent O(2), and two equivalent O(21) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(5)O12 cuboctahedra, corners with four equivalent Sr(6)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one Sr(4)O12 cuboctahedra,  a faceface with one La(1)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Ta(2)O6 octahedra, faces with two equivalent Ta(3)O6 octahedra, faces with two equivalent Co(3)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. In the sixth Sr site, Sr(6) is bonded to one O(10), one O(22), one O(23), one O(3), one O(4), one O(6), one O(7), one O(8), two equivalent O(24), and two equivalent O(5) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(5)O12 cuboctahedra, corners with four equivalent Sr(6)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Ta(3)O6 octahedra, faces with two equivalent Ta(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. There are two inequivalent La sites. In the first La site, La(1) is bonded to one O(10), one O(22), one O(23), one O(3), one O(4), one O(6), one O(7), one O(8), two equivalent O(24), and two equivalent O(5) atoms to form LaO12 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,  a faceface with one Sr(3)O12 cuboctahedra,  a faceface with one Sr(5)O12 cuboctahedra, faces with four equivalent Sr(6)O12 cuboctahedra, faces with two equivalent Ta(3)O6 octahedra, faces with two equivalent Ta(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. In the second La site, La(2) is bonded to one O(1), one O(11), one O(13), one O(14), one O(15), one O(18), one O(19), one O(20), two equivalent O(16), and two equivalent O(17) atoms to form LaO12 cuboctahedra that share corners with four equivalent Sr(3)O12 cuboctahedra, corners with four equivalent Sr(5)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with four equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Ta(1)O6 octahedra, faces with two equivalent Ta(2)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Co(3)O6 octahedra. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(11), one O(13), one O(14), one O(15), one O(17), and one O(9) atom to form TaO6 octahedra that share  a cornercorner with one Ta(2)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with four equivalent Co(2)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-9°. In the second Ta site, Ta(2) is bonded to one O(1), one O(17), one O(18), one O(19), one O(20), and one O(21) atom to form TaO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra,  a cornercorner with one Ta(3)O6 octahedra, corners with four equivalent Co(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(5)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-10°. In the third Ta site, Ta(3) is bonded to one O(21), one O(22), one O(23), one O(3), one O(4), and one O(5) atom to form TaO6 octahedra that share  a cornercorner with one Ta(2)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with four equivalent Co(4)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(5)O12 cuboctahedra, faces with two equivalent Sr(6)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-6°. In the fourth Ta site, Ta(4) is bonded to one O(10), one O(12), one O(24), one O(6), one O(7), and one O(8) atom to form TaO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(6)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-8°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra,  a cornercorner with one Ta(3)O6 octahedra, corners with four equivalent Ta(4)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(6)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-8°. In the second Co site, Co(2) is bonded to one O(11), one O(12), one O(13), one O(14), one O(15), and one O(16) atom to form CoO6 octahedra that share  a cornercorner with one Ta(4)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with four equivalent Ta(1)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(3)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-9°. In the third Co site, Co(3) is bonded to one O(1), one O(16), one O(18), one O(19), one O(2), and one O(20) atom to form CoO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with four equivalent Ta(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(4)O12 cuboctahedra, faces with two equivalent Sr(5)O12 cuboctahedra, and faces with two equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-10°. In the fourth Co site, Co(4) is bonded to one O(2), one O(22), one O(23), one O(24), one O(3), and one O(4) atom to form CoO6 octahedra that share  a cornercorner with one Ta(4)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with four equivalent Ta(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(5)O12 cuboctahedra, faces with two equivalent Sr(6)O12 cuboctahedra, and faces with two equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-6°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(4), one Sr(5), one La(2), one Ta(2), and one Co(3) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(5), one Co(3), and one Co(4) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(5), one Sr(6), one La(1), one Ta(3), and one Co(4) atom to form a mixture of distorted edge, corner, and face-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(5), one Sr(6), one La(1), one Ta(3), and one Co(4) atom to form a mixture of distorted corner and face-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 2-63°. In the fifth O site, O(5) is bonded in a distorted linear geometry to two equivalent Sr(6), two equivalent La(1), one Ta(3), and one Co(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(3), one Sr(6), one La(1), one Ta(4), and one Co(1) atom. In the seventh O site, O(7) is bonded to one Sr(2), one Sr(3), one Sr(6), one La(1), one Ta(4), and one Co(1) atom to form distorted OSr3LaTaCo octahedra that share corners with two equivalent O(3)Sr3LaTaCo octahedra, corners with two equivalent O(4)Sr3LaTaCo octahedra, corners with two equivalent O(8)Sr3LaTaCo octahedra, corners with two equivalent O(12)Sr4TaCo octahedra,  an edgeedge with one O(23)Sr3LaTaCo octahedra, edges with two equivalent O(8)Sr3LaTaCo octahedra,  a faceface with one O(12)Sr4TaCo octahedra, and faces with two equivalent O(10)Sr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the eighth O site, O(8) is bonded to one Sr(2), one Sr(3), one Sr(6), one La(1), one Ta(4), and one Co(1) atom to form distorted OSr3LaTaCo octahedra that share corners with two equivalent O(23)Sr3LaTaCo octahedra, corners with two equivalent O(4)Sr3LaTaCo octahedra, corners with two equivalent O(7)Sr3LaTaCo octahedra, corners with two equivalent O(12)Sr4TaCo octahedra,  an edgeedge with one O(3)Sr3LaTaCo octahedra, edges with two equivalent O(7)Sr3LaTaCo octahedra,  a faceface with one O(12)Sr4TaCo octahedra, and faces with two equivalent O(10)Sr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the ninth O site, O(9) is bonded in a distorted linear geometry to two equivalent Sr(2), two equivalent Sr(3), one Ta(1), and one Co(1) atom. In the tenth O site, O(10) is bonded to one Sr(2), one Sr(3), one Sr(6), one La(1), one Ta(4), and one Co(1) atom to form distorted OSr3LaTaCo octahedra that share corners with two equivalent O(23)Sr3LaTaCo octahedra, corners with two equivalent O(3)Sr3LaTaCo octahedra, corners with two equivalent O(4)Sr3LaTaCo octahedra, corners with two equivalent O(12)Sr4TaCo octahedra,  a faceface with one O(12)Sr4TaCo octahedra, faces with two equivalent O(7)Sr3LaTaCo octahedra, and faces with two equivalent O(8)Sr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 2-62°. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one La(2), one Ta(1), and one Co(2) atom. In the twelfth O site, O(12) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Ta(4), and one Co(2) atom to form distorted OSr4TaCo octahedra that share corners with two equivalent O(10)Sr3LaTaCo octahedra, corners with two equivalent O(7)Sr3LaTaCo octahedra, corners with two equivalent O(8)Sr3LaTaCo octahedra, corners with four equivalent O(12)Sr4TaCo octahedra,  a faceface with one O(10)Sr3LaTaCo octahedra,  a faceface with one O(7)Sr3LaTaCo octahedra, and  a faceface with one O(8)Sr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 5-58°. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one La(2), one Ta(1), and one Co(2) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Sr(2), one Sr(3), one Sr(4), one La(2), one Ta(1), and one Co(2) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one La(2), one Ta(1), and one Co(2) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to two equivalent Sr(4), two equivalent La(2), one Co(2), and one Co(3) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to two equivalent Sr(4), two equivalent La(2), one Ta(1), and one Ta(2) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(4), one Sr(5), one La(2), one Ta(2), and one Co(3) atom. In the nineteenth O site, O(19) is bonded to one Sr(1), one Sr(4), one Sr(5), one La(2), one Ta(2), and one Co(3) atom to form a mixture of distorted edge and corner-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the twentieth O site, O(20) is bonded to one Sr(1), one Sr(4), one Sr(5), one La(2), one Ta(2), and one Co(3) atom to form a mixture of distorted edge and corner-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the twenty-first O site, O(21) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(5), one Ta(2), and one Ta(3) atom. In the twenty-second O site, O(22) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(5), one Sr(6), one La(1), one Ta(3), and one Co(4) atom. In the twenty-third O site, O(23) is bonded to one Sr(1), one Sr(5), one Sr(6), one La(1), one Ta(3), and one Co(4) atom to form a mixture of distorted edge, corner, and face-sharing OSr3LaTaCo octahedra. The corner-sharing octahedral tilt angles range from 1-62°. In the twenty-fourth O site, O(24) is bonded in a 2-coordinate geometry to two equivalent Sr(6), two equivalent La(1), one Ta(4), and one Co(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr3LaTa2(CoO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.711
_cell_length_b   5.716
_cell_length_c   15.946
_cell_angle_alpha   90.007
_cell_angle_beta   90.029
_cell_angle_gamma   90.017
_symmetry_Int_Tables_number   1
_cell_volume   520.469
_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  0.501  0.005  0.376  1.0
  Sr  Sr1  1  0.500  0.002  0.872  1.0
  Sr  Sr2  1  0.999  0.502  0.870  1.0
  Sr  Sr3  1  0.999  0.504  0.125  1.0
  Sr  Sr4  1  1.000  0.500  0.378  1.0
  Sr  Sr5  1  0.500  0.999  0.626  1.0
  La  La6  1  0.996  0.493  0.627  1.0
  La  La7  1  0.500  0.019  0.124  1.0
  Ta  Ta8  1  1.000  0.000  0.997  1.0
  Ta  Ta9  1  0.000  1.000  0.250  1.0
  Ta  Ta10  1  0.999  0.999  0.504  1.0
  Ta  Ta11  1  0.500  0.501  0.749  1.0
  Co  Co12  1  1.000  0.001  0.751  1.0
  Co  Co13  1  0.499  0.504  0.005  1.0
  Co  Co14  1  0.499  0.503  0.254  1.0
  Co  Co15  1  0.500  0.499  0.497  1.0
  O  O16  1  0.746  0.236  0.247  1.0
  O  O17  1  0.493  0.503  0.367  1.0
  O  O18  1  0.234  0.256  0.502  1.0
  O  O19  1  0.247  0.757  0.504  1.0
  O  O20  1  0.989  0.012  0.625  1.0
  O  O21  1  0.245  0.736  0.743  1.0
  O  O22  1  0.744  0.747  0.749  1.0
  O  O23  1  0.255  0.257  0.746  1.0
  O  O24  1  0.008  0.996  0.877  1.0
  O  O25  1  0.754  0.266  0.751  1.0
  O  O26  1  0.743  0.236  0.003  1.0
  O  O27  1  0.492  0.506  0.879  1.0
  O  O28  1  0.244  0.247  0.007  1.0
  O  O29  1  0.754  0.755  0.005  1.0
  O  O30  1  0.255  0.767  0.009  1.0
  O  O31  1  0.505  0.486  0.124  1.0
  O  O32  1  0.990  0.005  0.125  1.0
  O  O33  1  0.255  0.767  0.242  1.0
  O  O34  1  0.756  0.755  0.246  1.0
  O  O35  1  0.244  0.246  0.244  1.0
  O  O36  1  0.008  0.998  0.374  1.0
  O  O37  1  0.751  0.240  0.496  1.0
  O  O38  1  0.767  0.742  0.500  1.0
  O  O39  1  0.517  0.494  0.626  1.0
[/CIF]
.