The structure described by Sr2YCo2GaO7 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(13), one O(14), one O(3), one O(7), and two equivalent O(12) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(2), one O(4), one O(5), one O(6), one O(8), one O(9), and two equivalent O(10) atoms. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(1), one O(12), one O(13), one O(14), one O(2), one O(3), and two equivalent O(11) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(10), one O(5), one O(6), one O(7), one O(8), one O(9), and two equivalent O(4) atoms. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a body-centered cubic geometry to one O(1), one O(13), one O(14), one O(3), one O(5), one O(6), one O(8), and one O(9) atom. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to one O(1), one O(13), one O(14), one O(3), one O(5), one O(6), one O(8), and one O(9) atom. 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(8), and one O(9) atom to form CoO5 trigonal bipyramids that share corners with four equivalent Co(3)O5 square pyramids and  a cornercorner with one Ga(1)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(1), one O(11), one O(13), one O(14), and one O(3) atom to form distorted CoO5 square pyramids that share  a cornercorner with one Ga(1)O4 tetrahedra and corners with four equivalent Co(4)O5 trigonal bipyramids. In the third Co site, Co(3) is bonded to one O(4), one O(5), one O(6), one O(8), and one O(9) atom to form distorted CoO5 square pyramids that share  a cornercorner with one Ga(2)O4 tetrahedra and corners with four equivalent Co(1)O5 trigonal bipyramids. In the fourth Co site, Co(4) is bonded to one O(1), one O(12), one O(13), one O(14), and one O(3) atom to form CoO5 trigonal bipyramids that share corners with four equivalent Co(2)O5 square pyramids and  a cornercorner with one Ga(2)O4 tetrahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(10), one O(11), one O(2), and one O(7) atom to form GaO4 tetrahedra that share  a cornercorner with one Co(2)O5 square pyramid, corners with two equivalent Ga(2)O4 tetrahedra, and  a cornercorner with one Co(1)O5 trigonal bipyramid. In the second Ga site, Ga(2) is bonded to one O(12), one O(2), one O(4), and one O(7) atom to form GaO4 tetrahedra that share  a cornercorner with one Co(3)O5 square pyramid, corners with two equivalent Ga(1)O4 tetrahedra, and  a cornercorner with one Co(4)O5 trigonal bipyramid. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(3), one Y(1), one Y(2), one Co(2), and one Co(4) atom to form distorted OSr2Y2Co2 octahedra that share corners with two equivalent O(8)Sr2Y2Co2 octahedra, corners with two equivalent O(9)Sr2Y2Co2 octahedra,  a cornercorner with one O(2)Sr2Ga2 tetrahedra,  a cornercorner with one O(7)Sr2Ga2 tetrahedra, and faces with two equivalent O(3)Sr2Y2Co2 octahedra. The corner-sharing octahedral tilt angles range from 1-69°. In the second O site, O(2) is bonded to one Sr(2), one Sr(3), one Ga(1), and one Ga(2) atom to form distorted OSr2Ga2 tetrahedra that share  a cornercorner with one O(1)Sr2Y2Co2 octahedra,  a cornercorner with one O(3)Sr2Y2Co2 octahedra,  a cornercorner with one O(8)Sr2Y2Co2 octahedra,  a cornercorner with one O(9)Sr2Y2Co2 octahedra, and corners with two equivalent O(7)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 18-48°. In the third O site, O(3) is bonded to one Sr(1), one Sr(3), one Y(1), one Y(2), one Co(2), and one Co(4) atom to form distorted OSr2Y2Co2 octahedra that share corners with two equivalent O(8)Sr2Y2Co2 octahedra, corners with two equivalent O(9)Sr2Y2Co2 octahedra,  a cornercorner with one O(2)Sr2Ga2 tetrahedra,  a cornercorner with one O(7)Sr2Ga2 tetrahedra, and faces with two equivalent O(1)Sr2Y2Co2 octahedra. The corner-sharing octahedral tilt angles range from 2-70°. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Sr(2), two equivalent Sr(4), one Co(3), and one Ga(2) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), one Co(1), and one Co(3) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), one Co(1), and one Co(3) atom. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(4), one Ga(1), and one Ga(2) atom to form distorted OSr2Ga2 tetrahedra that share  a cornercorner with one O(1)Sr2Y2Co2 octahedra,  a cornercorner with one O(3)Sr2Y2Co2 octahedra,  a cornercorner with one O(8)Sr2Y2Co2 octahedra,  a cornercorner with one O(9)Sr2Y2Co2 octahedra, and corners with two equivalent O(2)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 18-48°. In the eighth O site, O(8) is bonded to one Sr(2), one Sr(4), one Y(1), one Y(2), one Co(1), and one Co(3) atom to form distorted OSr2Y2Co2 octahedra that share corners with two equivalent O(1)Sr2Y2Co2 octahedra, corners with two equivalent O(3)Sr2Y2Co2 octahedra,  a cornercorner with one O(2)Sr2Ga2 tetrahedra,  a cornercorner with one O(7)Sr2Ga2 tetrahedra, and faces with two equivalent O(9)Sr2Y2Co2 octahedra. The corner-sharing octahedral tilt angles range from 1-70°. In the ninth O site, O(9) is bonded to one Sr(2), one Sr(4), one Y(1), one Y(2), one Co(1), and one Co(3) atom to form distorted OSr2Y2Co2 octahedra that share corners with two equivalent O(1)Sr2Y2Co2 octahedra, corners with two equivalent O(3)Sr2Y2Co2 octahedra,  a cornercorner with one O(2)Sr2Ga2 tetrahedra,  a cornercorner with one O(7)Sr2Ga2 tetrahedra, and faces with two equivalent O(8)Sr2Y2Co2 octahedra. The corner-sharing octahedral tilt angles range from 2-69°. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(4), two equivalent Sr(2), one Co(1), and one Ga(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sr(1), two equivalent Sr(3), one Co(2), and one Ga(1) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Sr(3), two equivalent Sr(1), one Co(4), and one Ga(2) atom. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), one Co(2), and one Co(4) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), one Co(2), and one Co(4) atom. is represented by the CIF file [CIF]
data_Sr2YGaCo2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.527
_cell_length_b   5.681
_cell_length_c   11.988
_cell_angle_alpha   103.637
_cell_angle_beta   103.275
_cell_angle_gamma   89.900
_symmetry_Int_Tables_number   1
_cell_volume   355.477
_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  0.841  0.821  0.697  1.0
  Sr  Sr1  1  0.144  0.170  0.300  1.0
  Sr  Sr2  1  0.340  0.369  0.698  1.0
  Sr  Sr3  1  0.641  0.622  0.300  1.0
  Y  Y4  1  0.501  0.497  0.000  1.0
  Y  Y5  1  0.999  0.997  0.001  1.0
  Ga  Ga6  1  0.708  0.170  0.497  1.0
  Ga  Ga7  1  0.208  0.821  0.500  1.0
  Co  Co8  1  0.578  0.071  0.159  1.0
  Co  Co9  1  0.928  0.422  0.856  1.0
  Co  Co10  1  0.076  0.577  0.154  1.0
  Co  Co11  1  0.418  0.922  0.841  1.0
  O  O12  1  0.680  0.673  0.873  1.0
  O  O13  1  0.364  0.121  0.499  1.0
  O  O14  1  0.179  0.694  0.876  1.0
  O  O15  1  0.203  0.622  0.353  1.0
  O  O16  1  0.822  0.818  0.127  1.0
  O  O17  1  0.324  0.804  0.131  1.0
  O  O18  1  0.862  0.869  0.498  1.0
  O  O19  1  0.305  0.300  0.124  1.0
  O  O20  1  0.806  0.319  0.126  1.0
  O  O21  1  0.697  0.217  0.348  1.0
  O  O22  1  0.854  0.374  0.640  1.0
  O  O23  1  0.347  0.776  0.649  1.0
  O  O24  1  0.693  0.173  0.871  1.0
  O  O25  1  0.191  0.189  0.869  1.0
[/CIF]
.
The structure described by Sr2YCo2GaO7 crystallizes in the triclinic P1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(11), one O(13), one O(14), one O(3), one O(7), and two equivalent O(12) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(2), one O(4), one O(5), one O(6), one O(8), one O(9), and two equivalent O(10) atoms. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(1), one O(12), one O(13), one O(14), one O(2), one O(3), and two equivalent O(11) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(10), one O(5), one O(6), one O(7), one O(8), one O(9), and two equivalent O(4) atoms. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a body-centered cubic geometry to one O(1), one O(13), one O(14), one O(3), one O(5), one O(6), one O(8), and one O(9) atom. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to one O(1), one O(13), one O(14), one O(3), one O(5), one O(6), one O(8), and one O(9) atom. 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(8), and one O(9) atom to form CoO5 trigonal bipyramids that share corners with four equivalent Co(3)O5 square pyramids and  a cornercorner with one Ga(1)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(1), one O(11), one O(13), one O(14), and one O(3) atom to form distorted CoO5 square pyramids that share  a cornercorner with one Ga(1)O4 tetrahedra and corners with four equivalent Co(4)O5 trigonal bipyramids. In the third Co site, Co(3) is bonded to one O(4), one O(5), one O(6), one O(8), and one O(9) atom to form distorted CoO5 square pyramids that share  a cornercorner with one Ga(2)O4 tetrahedra and corners with four equivalent Co(1)O5 trigonal bipyramids. In the fourth Co site, Co(4) is bonded to one O(1), one O(12), one O(13), one O(14), and one O(3) atom to form CoO5 trigonal bipyramids that share corners with four equivalent Co(2)O5 square pyramids and  a cornercorner with one Ga(2)O4 tetrahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(10), one O(11), one O(2), and one O(7) atom to form GaO4 tetrahedra that share  a cornercorner with one Co(2)O5 square pyramid, corners with two equivalent Ga(2)O4 tetrahedra, and  a cornercorner with one Co(1)O5 trigonal bipyramid. In the second Ga site, Ga(2) is bonded to one O(12), one O(2), one O(4), and one O(7) atom to form GaO4 tetrahedra that share  a cornercorner with one Co(3)O5 square pyramid, corners with two equivalent Ga(1)O4 tetrahedra, and  a cornercorner with one Co(4)O5 trigonal bipyramid. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(3), one Y(1), one Y(2), one Co(2), and one Co(4) atom to form distorted OSr2Y2Co2 octahedra that share corners with two equivalent O(8)Sr2Y2Co2 octahedra, corners with two equivalent O(9)Sr2Y2Co2 octahedra,  a cornercorner with one O(2)Sr2Ga2 tetrahedra,  a cornercorner with one O(7)Sr2Ga2 tetrahedra, and faces with two equivalent O(3)Sr2Y2Co2 octahedra. The corner-sharing octahedral tilt angles range from 1-69°. In the second O site, O(2) is bonded to one Sr(2), one Sr(3), one Ga(1), and one Ga(2) atom to form distorted OSr2Ga2 tetrahedra that share  a cornercorner with one O(1)Sr2Y2Co2 octahedra,  a cornercorner with one O(3)Sr2Y2Co2 octahedra,  a cornercorner with one O(8)Sr2Y2Co2 octahedra,  a cornercorner with one O(9)Sr2Y2Co2 octahedra, and corners with two equivalent O(7)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 18-48°. In the third O site, O(3) is bonded to one Sr(1), one Sr(3), one Y(1), one Y(2), one Co(2), and one Co(4) atom to form distorted OSr2Y2Co2 octahedra that share corners with two equivalent O(8)Sr2Y2Co2 octahedra, corners with two equivalent O(9)Sr2Y2Co2 octahedra,  a cornercorner with one O(2)Sr2Ga2 tetrahedra,  a cornercorner with one O(7)Sr2Ga2 tetrahedra, and faces with two equivalent O(1)Sr2Y2Co2 octahedra. The corner-sharing octahedral tilt angles range from 2-70°. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Sr(2), two equivalent Sr(4), one Co(3), and one Ga(2) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), one Co(1), and one Co(3) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Y(1), one Y(2), one Co(1), and one Co(3) atom. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(4), one Ga(1), and one Ga(2) atom to form distorted OSr2Ga2 tetrahedra that share  a cornercorner with one O(1)Sr2Y2Co2 octahedra,  a cornercorner with one O(3)Sr2Y2Co2 octahedra,  a cornercorner with one O(8)Sr2Y2Co2 octahedra,  a cornercorner with one O(9)Sr2Y2Co2 octahedra, and corners with two equivalent O(2)Sr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 18-48°. In the eighth O site, O(8) is bonded to one Sr(2), one Sr(4), one Y(1), one Y(2), one Co(1), and one Co(3) atom to form distorted OSr2Y2Co2 octahedra that share corners with two equivalent O(1)Sr2Y2Co2 octahedra, corners with two equivalent O(3)Sr2Y2Co2 octahedra,  a cornercorner with one O(2)Sr2Ga2 tetrahedra,  a cornercorner with one O(7)Sr2Ga2 tetrahedra, and faces with two equivalent O(9)Sr2Y2Co2 octahedra. The corner-sharing octahedral tilt angles range from 1-70°. In the ninth O site, O(9) is bonded to one Sr(2), one Sr(4), one Y(1), one Y(2), one Co(1), and one Co(3) atom to form distorted OSr2Y2Co2 octahedra that share corners with two equivalent O(1)Sr2Y2Co2 octahedra, corners with two equivalent O(3)Sr2Y2Co2 octahedra,  a cornercorner with one O(2)Sr2Ga2 tetrahedra,  a cornercorner with one O(7)Sr2Ga2 tetrahedra, and faces with two equivalent O(8)Sr2Y2Co2 octahedra. The corner-sharing octahedral tilt angles range from 2-69°. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(4), two equivalent Sr(2), one Co(1), and one Ga(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sr(1), two equivalent Sr(3), one Co(2), and one Ga(1) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Sr(3), two equivalent Sr(1), one Co(4), and one Ga(2) atom. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), one Co(2), and one Co(4) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Y(1), one Y(2), one Co(2), and one Co(4) atom. is represented by the CIF file [CIF]
data_Sr2YGaCo2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.527
_cell_length_b   5.681
_cell_length_c   11.988
_cell_angle_alpha   103.637
_cell_angle_beta   103.275
_cell_angle_gamma   89.900
_symmetry_Int_Tables_number   1
_cell_volume   355.477
_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  0.841  0.821  0.697  1.0
  Sr  Sr1  1  0.144  0.170  0.300  1.0
  Sr  Sr2  1  0.340  0.369  0.698  1.0
  Sr  Sr3  1  0.641  0.622  0.300  1.0
  Y  Y4  1  0.501  0.497  0.000  1.0
  Y  Y5  1  0.999  0.997  0.001  1.0
  Ga  Ga6  1  0.708  0.170  0.497  1.0
  Ga  Ga7  1  0.208  0.821  0.500  1.0
  Co  Co8  1  0.578  0.071  0.159  1.0
  Co  Co9  1  0.928  0.422  0.856  1.0
  Co  Co10  1  0.076  0.577  0.154  1.0
  Co  Co11  1  0.418  0.922  0.841  1.0
  O  O12  1  0.680  0.673  0.873  1.0
  O  O13  1  0.364  0.121  0.499  1.0
  O  O14  1  0.179  0.694  0.876  1.0
  O  O15  1  0.203  0.622  0.353  1.0
  O  O16  1  0.822  0.818  0.127  1.0
  O  O17  1  0.324  0.804  0.131  1.0
  O  O18  1  0.862  0.869  0.498  1.0
  O  O19  1  0.305  0.300  0.124  1.0
  O  O20  1  0.806  0.319  0.126  1.0
  O  O21  1  0.697  0.217  0.348  1.0
  O  O22  1  0.854  0.374  0.640  1.0
  O  O23  1  0.347  0.776  0.649  1.0
  O  O24  1  0.693  0.173  0.871  1.0
  O  O25  1  0.191  0.189  0.869  1.0
[/CIF]
.