The material described by Sr3TaCoO7 is (La,Ba)CuO4-derived structured and crystallizes in the triclinic P1 space group. There are twelve inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(13), one O(15), two equivalent O(10), two equivalent O(12), and two equivalent O(17) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(14), one O(16), two equivalent O(11), two equivalent O(18), and two equivalent O(9) atoms. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(13), one O(15), two equivalent O(10), two equivalent O(12), and two equivalent O(19) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(14), one O(16), two equivalent O(11), two equivalent O(20), and two equivalent O(9) atoms. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one O(1), one O(21), one O(23), two equivalent O(25), two equivalent O(5), and two equivalent O(7) atoms. In the sixth Sr site, Sr(6) is bonded in a 9-coordinate geometry to one O(2), one O(22), one O(24), two equivalent O(26), two equivalent O(6), and two equivalent O(8) atoms. In the seventh Sr site, Sr(7) is bonded in a 9-coordinate geometry to one O(21), one O(23), one O(3), two equivalent O(27), two equivalent O(5), and two equivalent O(7) atoms. In the eighth Sr site, Sr(8) is bonded in a 9-coordinate geometry to one O(22), one O(24), one O(4), two equivalent O(28), two equivalent O(6), and two equivalent O(8) atoms. In the ninth Sr site, Sr(9) is bonded in a 9-coordinate geometry to one O(13), one O(15), one O(5), two equivalent O(1), two equivalent O(17), and two equivalent O(3) atoms. In the tenth Sr site, Sr(10) is bonded in a 9-coordinate geometry to one O(14), one O(16), one O(6), two equivalent O(18), two equivalent O(2), and two equivalent O(4) atoms. In the eleventh Sr site, Sr(11) is bonded in a 9-coordinate geometry to one O(13), one O(15), one O(7), two equivalent O(1), two equivalent O(19), and two equivalent O(3) atoms. In the twelfth Sr site, Sr(12) is bonded in a 9-coordinate geometry to one O(14), one O(16), one O(8), two equivalent O(2), two equivalent O(20), and two equivalent O(4) atoms. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(25), one O(27), one O(5), one O(9), and two equivalent O(21) atoms to form TaO6 octahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, and corners with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second Ta site, Ta(2) is bonded to one O(10), one O(26), one O(28), one O(6), and two equivalent O(22) atoms to form TaO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, and corners with two equivalent Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the third Ta site, Ta(3) is bonded to one O(11), one O(25), one O(27), one O(7), and two equivalent O(23) atoms to form TaO6 octahedra that share  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, and corners with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the fourth Ta site, Ta(4) is bonded to one O(12), one O(26), one O(28), one O(8), and two equivalent O(24) atoms to form TaO6 octahedra that share  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, and corners with two equivalent Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(18), one O(2), one O(20), one O(9), and two equivalent O(14) atoms to form CoO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. In the second Co site, Co(2) is bonded to one O(10), one O(17), one O(19), one O(3), and two equivalent O(15) atoms to form distorted CoO6 octahedra that share  a cornercorner with one Ta(2)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and corners with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-13°. In the third Co site, Co(3) is bonded to one O(1), one O(12), one O(17), one O(19), and two equivalent O(13) atoms to form distorted CoO6 octahedra that share  a cornercorner with one Ta(4)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and corners with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-12°. In the fourth Co site, Co(4) is bonded to one O(11), one O(18), one O(20), one O(4), and two equivalent O(16) atoms to form distorted CoO6 octahedra that share  a cornercorner with one Ta(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded to one Sr(5), two equivalent Sr(11), two equivalent Sr(9), and one Co(3) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with four equivalent O(15)Sr4Co2 octahedra, corners with four equivalent O(3)Sr5Co octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with two equivalent O(3)Sr5Co octahedra, edges with two equivalent O(5)Sr5Ta octahedra, edges with two equivalent O(7)Sr5Ta octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra, and faces with two equivalent O(13)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-54°. In the second O site, O(2) is bonded to one Sr(6), two equivalent Sr(10), two equivalent Sr(12), and one Co(1) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with four equivalent O(16)Sr4Co2 octahedra, corners with four equivalent O(4)Sr5Co octahedra, edges with two equivalent O(2)Sr5Co octahedra, edges with two equivalent O(4)Sr5Co octahedra, edges with two equivalent O(6)Sr5Ta octahedra, edges with two equivalent O(8)Sr5Ta octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra, and faces with two equivalent O(14)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 14-54°. In the third O site, O(3) is bonded to one Sr(7), two equivalent Sr(11), two equivalent Sr(9), and one Co(2) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with four equivalent O(13)Sr4Co2 octahedra, corners with four equivalent O(1)Sr5Co octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with two equivalent O(3)Sr5Co octahedra, edges with two equivalent O(5)Sr5Ta octahedra, edges with two equivalent O(7)Sr5Ta octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra, and faces with two equivalent O(15)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-54°. In the fourth O site, O(4) is bonded to one Sr(8), two equivalent Sr(10), two equivalent Sr(12), and one Co(4) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with four equivalent O(14)Sr4Co2 octahedra, corners with four equivalent O(2)Sr5Co octahedra, edges with two equivalent O(2)Sr5Co octahedra, edges with two equivalent O(4)Sr5Co octahedra, edges with two equivalent O(6)Sr5Ta octahedra, edges with two equivalent O(8)Sr5Ta octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra, and faces with two equivalent O(16)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 14-56°. In the fifth O site, O(5) is bonded to one Sr(9), two equivalent Sr(5), two equivalent Sr(7), and one Ta(1) atom to form OSr5Ta octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(15)Sr4Co2 octahedra, corners with two equivalent O(17)Sr4Co2 octahedra, corners with four equivalent O(7)Sr5Ta octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with two equivalent O(3)Sr5Co octahedra, edges with two equivalent O(5)Sr5Ta octahedra, and edges with two equivalent O(7)Sr5Ta octahedra. The corner-sharing octahedral tilt angles range from 2-48°. In the sixth O site, O(6) is bonded to one Sr(10), two equivalent Sr(6), two equivalent Sr(8), and one Ta(2) atom to form distorted OSr5Ta octahedra that share  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra, corners with two equivalent O(18)Sr4Co2 octahedra, corners with four equivalent O(8)Sr5Ta octahedra, edges with two equivalent O(2)Sr5Co octahedra, edges with two equivalent O(4)Sr5Co octahedra, edges with two equivalent O(6)Sr5Ta octahedra, and edges with two equivalent O(8)Sr5Ta octahedra. The corner-sharing octahedral tilt angles range from 1-48°. In the seventh O site, O(7) is bonded to one Sr(11), two equivalent Sr(5), two equivalent Sr(7), and one Ta(3) atom to form distorted OSr5Ta octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(15)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with four equivalent O(5)Sr5Ta octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with two equivalent O(3)Sr5Co octahedra, edges with two equivalent O(5)Sr5Ta octahedra, and edges with two equivalent O(7)Sr5Ta octahedra. The corner-sharing octahedral tilt angles range from 2-48°. In the eighth O site, O(8) is bonded to one Sr(12), two equivalent Sr(6), two equivalent Sr(8), and one Ta(4) atom to form OSr5Ta octahedra that share  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with four equivalent O(6)Sr5Ta octahedra, edges with two equivalent O(2)Sr5Co octahedra, edges with two equivalent O(4)Sr5Co octahedra, edges with two equivalent O(6)Sr5Ta octahedra, and edges with two equivalent O(8)Sr5Ta octahedra. The corner-sharing octahedral tilt angles range from 1-48°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Sr(4), one Ta(1), and one Co(1) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to two equivalent Sr(1), two equivalent Sr(3), one Ta(2), and one Co(2) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to two equivalent Sr(2), two equivalent Sr(4), one Ta(3), and one Co(4) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to two equivalent Sr(1), two equivalent Sr(3), one Ta(4), and one Co(3) atom. In the thirteenth O site, O(13) is bonded to one Sr(1), one Sr(11), one Sr(3), one Sr(9), and two equivalent Co(3) atoms to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(5)Sr5Ta octahedra,  a cornercorner with one O(7)Sr5Ta octahedra, corners with two equivalent O(13)Sr4Co2 octahedra, corners with four equivalent O(3)Sr5Co octahedra, edges with two equivalent O(15)Sr4Co2 octahedra, faces with two equivalent O(17)Sr4Co2 octahedra, faces with two equivalent O(19)Sr4Co2 octahedra, and faces with two equivalent O(1)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-54°. In the fourteenth O site, O(14) is bonded to one Sr(10), one Sr(12), one Sr(2), one Sr(4), and two equivalent Co(1) atoms to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(6)Sr5Ta octahedra,  a cornercorner with one O(8)Sr5Ta octahedra, corners with two equivalent O(14)Sr4Co2 octahedra, corners with four equivalent O(4)Sr5Co octahedra, edges with two equivalent O(16)Sr4Co2 octahedra, faces with two equivalent O(18)Sr4Co2 octahedra, faces with two equivalent O(20)Sr4Co2 octahedra, and faces with two equivalent O(2)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 7-54°. In the fifteenth O site, O(15) is bonded to one Sr(1), one Sr(11), one Sr(3), one Sr(9), and two equivalent Co(2) atoms to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(5)Sr5Ta octahedra,  a cornercorner with one O(7)Sr5Ta octahedra, corners with two equivalent O(15)Sr4Co2 octahedra, corners with four equivalent O(1)Sr5Co octahedra, edges with two equivalent O(13)Sr4Co2 octahedra, faces with two equivalent O(17)Sr4Co2 octahedra, faces with two equivalent O(19)Sr4Co2 octahedra, and faces with two equivalent O(3)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 13-54°. In the sixteenth O site, O(16) is bonded to one Sr(10), one Sr(12), one Sr(2), one Sr(4), and two equivalent Co(4) atoms to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(6)Sr5Ta octahedra,  a cornercorner with one O(8)Sr5Ta octahedra, corners with two equivalent O(16)Sr4Co2 octahedra, corners with four equivalent O(2)Sr5Co octahedra, edges with two equivalent O(14)Sr4Co2 octahedra, faces with two equivalent O(18)Sr4Co2 octahedra, faces with two equivalent O(20)Sr4Co2 octahedra, and faces with two equivalent O(4)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-54°. In the seventeenth O site, O(17) is bonded to two equivalent Sr(1), two equivalent Sr(9), one Co(2), and one Co(3) atom to form distorted OSr4Co2 octahedra that share corners with two equivalent O(19)Sr4Co2 octahedra, corners with two equivalent O(1)Sr5Co octahedra, corners with two equivalent O(3)Sr5Co octahedra, corners with two equivalent O(5)Sr5Ta octahedra, edges with two equivalent O(17)Sr4Co2 octahedra,  a faceface with one O(1)Sr5Co octahedra,  a faceface with one O(3)Sr5Co octahedra, faces with two equivalent O(13)Sr4Co2 octahedra, and faces with two equivalent O(15)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 9-54°. In the eighteenth O site, O(18) is bonded to two equivalent Sr(10), two equivalent Sr(2), one Co(1), and one Co(4) atom to form distorted OSr4Co2 octahedra that share corners with two equivalent O(20)Sr4Co2 octahedra, corners with two equivalent O(2)Sr5Co octahedra, corners with two equivalent O(4)Sr5Co octahedra, corners with two equivalent O(6)Sr5Ta octahedra, edges with two equivalent O(18)Sr4Co2 octahedra,  a faceface with one O(2)Sr5Co octahedra,  a faceface with one O(4)Sr5Co octahedra, faces with two equivalent O(14)Sr4Co2 octahedra, and faces with two equivalent O(16)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 9-56°. In the nineteenth O site, O(19) is bonded to two equivalent Sr(11), two equivalent Sr(3), one Co(2), and one Co(3) atom to form distorted OSr4Co2 octahedra that share corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(1)Sr5Co octahedra, corners with two equivalent O(3)Sr5Co octahedra, corners with two equivalent O(7)Sr5Ta octahedra, edges with two equivalent O(19)Sr4Co2 octahedra,  a faceface with one O(1)Sr5Co octahedra,  a faceface with one O(3)Sr5Co octahedra, faces with two equivalent O(13)Sr4Co2 octahedra, and faces with two equivalent O(15)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 9-54°. In the twentieth O site, O(20) is bonded to two equivalent Sr(12), two equivalent Sr(4), one Co(1), and one Co(4) atom to form distorted OSr4Co2 octahedra that share corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(2)Sr5Co octahedra, corners with two equivalent O(4)Sr5Co octahedra, corners with two equivalent O(8)Sr5Ta octahedra, edges with two equivalent O(20)Sr4Co2 octahedra,  a faceface with one O(2)Sr5Co octahedra,  a faceface with one O(4)Sr5Co octahedra, faces with two equivalent O(14)Sr4Co2 octahedra, and faces with two equivalent O(16)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 9-56°. In the twenty-first O site, O(21) is bonded in a distorted linear geometry to one Sr(5), one Sr(7), and two equivalent Ta(1) atoms. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Sr(6), one Sr(8), and two equivalent Ta(2) atoms. In the twenty-third O site, O(23) is bonded in a distorted linear geometry to one Sr(5), one Sr(7), and two equivalent Ta(3) atoms. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Sr(6), one Sr(8), and two equivalent Ta(4) atoms. In the twenty-fifth O site, O(25) is bonded in a distorted linear geometry to two equivalent Sr(5), one Ta(1), and one Ta(3) atom. In the twenty-sixth O site, O(26) is bonded in a distorted linear geometry to two equivalent Sr(6), one Ta(2), and one Ta(4) atom. In the twenty-seventh O site, O(27) is bonded in a distorted linear geometry to two equivalent Sr(7), one Ta(1), and one Ta(3) atom. In the twenty-eighth O site, O(28) is bonded in a distorted linear geometry to two equivalent Sr(8), one Ta(2), and one Ta(4) atom. is represented by the CIF card [CIF]
data_Sr3TaCoO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.949
_cell_length_b   3.965
_cell_length_c   11.123
_cell_angle_alpha   100.228
_cell_angle_beta   100.214
_cell_angle_gamma   90.023
_symmetry_Int_Tables_number   1
_cell_volume   168.559
_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
  Co  Co0  1  0.106  0.106  0.212  1.0
  O  O1  1  0.198  0.198  0.397  1.0
  O  O2  1  0.805  0.806  0.610  1.0
  O  O3  1  0.991  0.991  0.982  1.0
  O  O4  1  0.097  0.597  0.195  1.0
  O  O5  1  0.597  0.096  0.193  1.0
  O  O6  1  0.897  0.397  0.794  1.0
  O  O7  1  0.397  0.897  0.793  1.0
  Sr  Sr8  1  0.519  0.518  0.039  1.0
  Sr  Sr9  1  0.308  0.308  0.616  1.0
  Sr  Sr10  1  0.683  0.685  0.365  1.0
  Ta  Ta11  1  0.902  0.902  0.804  1.0
[/CIF]
.
The material described by Sr3TaCoO7 is (La,Ba)CuO4-derived structured and crystallizes in the triclinic P1 space group. There are twelve inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(13), one O(15), two equivalent O(10), two equivalent O(12), and two equivalent O(17) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(14), one O(16), two equivalent O(11), two equivalent O(18), and two equivalent O(9) atoms. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(13), one O(15), two equivalent O(10), two equivalent O(12), and two equivalent O(19) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(14), one O(16), two equivalent O(11), two equivalent O(20), and two equivalent O(9) atoms. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one O(1), one O(21), one O(23), two equivalent O(25), two equivalent O(5), and two equivalent O(7) atoms. In the sixth Sr site, Sr(6) is bonded in a 9-coordinate geometry to one O(2), one O(22), one O(24), two equivalent O(26), two equivalent O(6), and two equivalent O(8) atoms. In the seventh Sr site, Sr(7) is bonded in a 9-coordinate geometry to one O(21), one O(23), one O(3), two equivalent O(27), two equivalent O(5), and two equivalent O(7) atoms. In the eighth Sr site, Sr(8) is bonded in a 9-coordinate geometry to one O(22), one O(24), one O(4), two equivalent O(28), two equivalent O(6), and two equivalent O(8) atoms. In the ninth Sr site, Sr(9) is bonded in a 9-coordinate geometry to one O(13), one O(15), one O(5), two equivalent O(1), two equivalent O(17), and two equivalent O(3) atoms. In the tenth Sr site, Sr(10) is bonded in a 9-coordinate geometry to one O(14), one O(16), one O(6), two equivalent O(18), two equivalent O(2), and two equivalent O(4) atoms. In the eleventh Sr site, Sr(11) is bonded in a 9-coordinate geometry to one O(13), one O(15), one O(7), two equivalent O(1), two equivalent O(19), and two equivalent O(3) atoms. In the twelfth Sr site, Sr(12) is bonded in a 9-coordinate geometry to one O(14), one O(16), one O(8), two equivalent O(2), two equivalent O(20), and two equivalent O(4) atoms. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(25), one O(27), one O(5), one O(9), and two equivalent O(21) atoms to form TaO6 octahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, and corners with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second Ta site, Ta(2) is bonded to one O(10), one O(26), one O(28), one O(6), and two equivalent O(22) atoms to form TaO6 octahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, and corners with two equivalent Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the third Ta site, Ta(3) is bonded to one O(11), one O(25), one O(27), one O(7), and two equivalent O(23) atoms to form TaO6 octahedra that share  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, and corners with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the fourth Ta site, Ta(4) is bonded to one O(12), one O(26), one O(28), one O(8), and two equivalent O(24) atoms to form TaO6 octahedra that share  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, and corners with two equivalent Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(18), one O(2), one O(20), one O(9), and two equivalent O(14) atoms to form CoO6 octahedra that share  a cornercorner with one Ta(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. In the second Co site, Co(2) is bonded to one O(10), one O(17), one O(19), one O(3), and two equivalent O(15) atoms to form distorted CoO6 octahedra that share  a cornercorner with one Ta(2)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and corners with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-13°. In the third Co site, Co(3) is bonded to one O(1), one O(12), one O(17), one O(19), and two equivalent O(13) atoms to form distorted CoO6 octahedra that share  a cornercorner with one Ta(4)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and corners with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-12°. In the fourth Co site, Co(4) is bonded to one O(11), one O(18), one O(20), one O(4), and two equivalent O(16) atoms to form distorted CoO6 octahedra that share  a cornercorner with one Ta(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded to one Sr(5), two equivalent Sr(11), two equivalent Sr(9), and one Co(3) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with four equivalent O(15)Sr4Co2 octahedra, corners with four equivalent O(3)Sr5Co octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with two equivalent O(3)Sr5Co octahedra, edges with two equivalent O(5)Sr5Ta octahedra, edges with two equivalent O(7)Sr5Ta octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra, and faces with two equivalent O(13)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-54°. In the second O site, O(2) is bonded to one Sr(6), two equivalent Sr(10), two equivalent Sr(12), and one Co(1) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with four equivalent O(16)Sr4Co2 octahedra, corners with four equivalent O(4)Sr5Co octahedra, edges with two equivalent O(2)Sr5Co octahedra, edges with two equivalent O(4)Sr5Co octahedra, edges with two equivalent O(6)Sr5Ta octahedra, edges with two equivalent O(8)Sr5Ta octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra, and faces with two equivalent O(14)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 14-54°. In the third O site, O(3) is bonded to one Sr(7), two equivalent Sr(11), two equivalent Sr(9), and one Co(2) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with four equivalent O(13)Sr4Co2 octahedra, corners with four equivalent O(1)Sr5Co octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with two equivalent O(3)Sr5Co octahedra, edges with two equivalent O(5)Sr5Ta octahedra, edges with two equivalent O(7)Sr5Ta octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra, and faces with two equivalent O(15)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-54°. In the fourth O site, O(4) is bonded to one Sr(8), two equivalent Sr(10), two equivalent Sr(12), and one Co(4) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with four equivalent O(14)Sr4Co2 octahedra, corners with four equivalent O(2)Sr5Co octahedra, edges with two equivalent O(2)Sr5Co octahedra, edges with two equivalent O(4)Sr5Co octahedra, edges with two equivalent O(6)Sr5Ta octahedra, edges with two equivalent O(8)Sr5Ta octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra, and faces with two equivalent O(16)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 14-56°. In the fifth O site, O(5) is bonded to one Sr(9), two equivalent Sr(5), two equivalent Sr(7), and one Ta(1) atom to form OSr5Ta octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(15)Sr4Co2 octahedra, corners with two equivalent O(17)Sr4Co2 octahedra, corners with four equivalent O(7)Sr5Ta octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with two equivalent O(3)Sr5Co octahedra, edges with two equivalent O(5)Sr5Ta octahedra, and edges with two equivalent O(7)Sr5Ta octahedra. The corner-sharing octahedral tilt angles range from 2-48°. In the sixth O site, O(6) is bonded to one Sr(10), two equivalent Sr(6), two equivalent Sr(8), and one Ta(2) atom to form distorted OSr5Ta octahedra that share  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra, corners with two equivalent O(18)Sr4Co2 octahedra, corners with four equivalent O(8)Sr5Ta octahedra, edges with two equivalent O(2)Sr5Co octahedra, edges with two equivalent O(4)Sr5Co octahedra, edges with two equivalent O(6)Sr5Ta octahedra, and edges with two equivalent O(8)Sr5Ta octahedra. The corner-sharing octahedral tilt angles range from 1-48°. In the seventh O site, O(7) is bonded to one Sr(11), two equivalent Sr(5), two equivalent Sr(7), and one Ta(3) atom to form distorted OSr5Ta octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(15)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with four equivalent O(5)Sr5Ta octahedra, edges with two equivalent O(1)Sr5Co octahedra, edges with two equivalent O(3)Sr5Co octahedra, edges with two equivalent O(5)Sr5Ta octahedra, and edges with two equivalent O(7)Sr5Ta octahedra. The corner-sharing octahedral tilt angles range from 2-48°. In the eighth O site, O(8) is bonded to one Sr(12), two equivalent Sr(6), two equivalent Sr(8), and one Ta(4) atom to form OSr5Ta octahedra that share  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with four equivalent O(6)Sr5Ta octahedra, edges with two equivalent O(2)Sr5Co octahedra, edges with two equivalent O(4)Sr5Co octahedra, edges with two equivalent O(6)Sr5Ta octahedra, and edges with two equivalent O(8)Sr5Ta octahedra. The corner-sharing octahedral tilt angles range from 1-48°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Sr(4), one Ta(1), and one Co(1) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to two equivalent Sr(1), two equivalent Sr(3), one Ta(2), and one Co(2) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to two equivalent Sr(2), two equivalent Sr(4), one Ta(3), and one Co(4) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to two equivalent Sr(1), two equivalent Sr(3), one Ta(4), and one Co(3) atom. In the thirteenth O site, O(13) is bonded to one Sr(1), one Sr(11), one Sr(3), one Sr(9), and two equivalent Co(3) atoms to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(5)Sr5Ta octahedra,  a cornercorner with one O(7)Sr5Ta octahedra, corners with two equivalent O(13)Sr4Co2 octahedra, corners with four equivalent O(3)Sr5Co octahedra, edges with two equivalent O(15)Sr4Co2 octahedra, faces with two equivalent O(17)Sr4Co2 octahedra, faces with two equivalent O(19)Sr4Co2 octahedra, and faces with two equivalent O(1)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-54°. In the fourteenth O site, O(14) is bonded to one Sr(10), one Sr(12), one Sr(2), one Sr(4), and two equivalent Co(1) atoms to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(6)Sr5Ta octahedra,  a cornercorner with one O(8)Sr5Ta octahedra, corners with two equivalent O(14)Sr4Co2 octahedra, corners with four equivalent O(4)Sr5Co octahedra, edges with two equivalent O(16)Sr4Co2 octahedra, faces with two equivalent O(18)Sr4Co2 octahedra, faces with two equivalent O(20)Sr4Co2 octahedra, and faces with two equivalent O(2)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 7-54°. In the fifteenth O site, O(15) is bonded to one Sr(1), one Sr(11), one Sr(3), one Sr(9), and two equivalent Co(2) atoms to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(5)Sr5Ta octahedra,  a cornercorner with one O(7)Sr5Ta octahedra, corners with two equivalent O(15)Sr4Co2 octahedra, corners with four equivalent O(1)Sr5Co octahedra, edges with two equivalent O(13)Sr4Co2 octahedra, faces with two equivalent O(17)Sr4Co2 octahedra, faces with two equivalent O(19)Sr4Co2 octahedra, and faces with two equivalent O(3)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 13-54°. In the sixteenth O site, O(16) is bonded to one Sr(10), one Sr(12), one Sr(2), one Sr(4), and two equivalent Co(4) atoms to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(6)Sr5Ta octahedra,  a cornercorner with one O(8)Sr5Ta octahedra, corners with two equivalent O(16)Sr4Co2 octahedra, corners with four equivalent O(2)Sr5Co octahedra, edges with two equivalent O(14)Sr4Co2 octahedra, faces with two equivalent O(18)Sr4Co2 octahedra, faces with two equivalent O(20)Sr4Co2 octahedra, and faces with two equivalent O(4)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-54°. In the seventeenth O site, O(17) is bonded to two equivalent Sr(1), two equivalent Sr(9), one Co(2), and one Co(3) atom to form distorted OSr4Co2 octahedra that share corners with two equivalent O(19)Sr4Co2 octahedra, corners with two equivalent O(1)Sr5Co octahedra, corners with two equivalent O(3)Sr5Co octahedra, corners with two equivalent O(5)Sr5Ta octahedra, edges with two equivalent O(17)Sr4Co2 octahedra,  a faceface with one O(1)Sr5Co octahedra,  a faceface with one O(3)Sr5Co octahedra, faces with two equivalent O(13)Sr4Co2 octahedra, and faces with two equivalent O(15)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 9-54°. In the eighteenth O site, O(18) is bonded to two equivalent Sr(10), two equivalent Sr(2), one Co(1), and one Co(4) atom to form distorted OSr4Co2 octahedra that share corners with two equivalent O(20)Sr4Co2 octahedra, corners with two equivalent O(2)Sr5Co octahedra, corners with two equivalent O(4)Sr5Co octahedra, corners with two equivalent O(6)Sr5Ta octahedra, edges with two equivalent O(18)Sr4Co2 octahedra,  a faceface with one O(2)Sr5Co octahedra,  a faceface with one O(4)Sr5Co octahedra, faces with two equivalent O(14)Sr4Co2 octahedra, and faces with two equivalent O(16)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 9-56°. In the nineteenth O site, O(19) is bonded to two equivalent Sr(11), two equivalent Sr(3), one Co(2), and one Co(3) atom to form distorted OSr4Co2 octahedra that share corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(1)Sr5Co octahedra, corners with two equivalent O(3)Sr5Co octahedra, corners with two equivalent O(7)Sr5Ta octahedra, edges with two equivalent O(19)Sr4Co2 octahedra,  a faceface with one O(1)Sr5Co octahedra,  a faceface with one O(3)Sr5Co octahedra, faces with two equivalent O(13)Sr4Co2 octahedra, and faces with two equivalent O(15)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 9-54°. In the twentieth O site, O(20) is bonded to two equivalent Sr(12), two equivalent Sr(4), one Co(1), and one Co(4) atom to form distorted OSr4Co2 octahedra that share corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(2)Sr5Co octahedra, corners with two equivalent O(4)Sr5Co octahedra, corners with two equivalent O(8)Sr5Ta octahedra, edges with two equivalent O(20)Sr4Co2 octahedra,  a faceface with one O(2)Sr5Co octahedra,  a faceface with one O(4)Sr5Co octahedra, faces with two equivalent O(14)Sr4Co2 octahedra, and faces with two equivalent O(16)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 9-56°. In the twenty-first O site, O(21) is bonded in a distorted linear geometry to one Sr(5), one Sr(7), and two equivalent Ta(1) atoms. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Sr(6), one Sr(8), and two equivalent Ta(2) atoms. In the twenty-third O site, O(23) is bonded in a distorted linear geometry to one Sr(5), one Sr(7), and two equivalent Ta(3) atoms. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Sr(6), one Sr(8), and two equivalent Ta(4) atoms. In the twenty-fifth O site, O(25) is bonded in a distorted linear geometry to two equivalent Sr(5), one Ta(1), and one Ta(3) atom. In the twenty-sixth O site, O(26) is bonded in a distorted linear geometry to two equivalent Sr(6), one Ta(2), and one Ta(4) atom. In the twenty-seventh O site, O(27) is bonded in a distorted linear geometry to two equivalent Sr(7), one Ta(1), and one Ta(3) atom. In the twenty-eighth O site, O(28) is bonded in a distorted linear geometry to two equivalent Sr(8), one Ta(2), and one Ta(4) atom. is represented by the CIF card [CIF]
data_Sr3TaCoO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.949
_cell_length_b   3.965
_cell_length_c   11.123
_cell_angle_alpha   100.228
_cell_angle_beta   100.214
_cell_angle_gamma   90.023
_symmetry_Int_Tables_number   1
_cell_volume   168.559
_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
  Co  Co0  1  0.106  0.106  0.212  1.0
  O  O1  1  0.198  0.198  0.397  1.0
  O  O2  1  0.805  0.806  0.610  1.0
  O  O3  1  0.991  0.991  0.982  1.0
  O  O4  1  0.097  0.597  0.195  1.0
  O  O5  1  0.597  0.096  0.193  1.0
  O  O6  1  0.897  0.397  0.794  1.0
  O  O7  1  0.397  0.897  0.793  1.0
  Sr  Sr8  1  0.519  0.518  0.039  1.0
  Sr  Sr9  1  0.308  0.308  0.616  1.0
  Sr  Sr10  1  0.683  0.685  0.365  1.0
  Ta  Ta11  1  0.902  0.902  0.804  1.0
[/CIF]
.