The material described by Ca2LaCu2GaO7 crystallizes in the triclinic P1 space group. There are four inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(13), one O(2), one O(3), one O(6), and one O(7) atom. In the second Ca site, Ca(2) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(14), one O(2), one O(3), one O(6), and one O(7) atom. In the third Ca site, Ca(3) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(13), one O(4), one O(5), one O(8), and one O(9) atom. In the fourth Ca site, Ca(4) is bonded in a body-centered cubic geometry to one O(10), one O(11), one O(12), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(14), one O(5), one O(8), one O(9), and two equivalent O(4) atoms. In the second La site, La(2) is bonded in a body-centered cubic geometry to one O(10), one O(11), one O(12), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(12), one O(5), one O(8), and one O(9) atom to form distorted CuO5 square pyramids that share corners with four equivalent Cu(4)O5 square pyramids and  a cornercorner with one Ga(1)O4 tetrahedra. In the second Cu site, Cu(2) is bonded to one O(10), one O(11), one O(2), one O(6), and one O(7) atom to form CuO5 square pyramids that share corners with four equivalent Cu(3)O5 square pyramids and  a cornercorner with one Ga(2)O4 tetrahedra. In the third Cu site, Cu(3) is bonded to one O(10), one O(11), one O(3), one O(6), and one O(7) atom to form CuO5 square pyramids that share corners with four equivalent Cu(2)O5 square pyramids and  a cornercorner with one Ga(1)O4 tetrahedra. In the fourth Cu site, Cu(4) is bonded to one O(12), one O(4), one O(5), one O(8), and one O(9) atom to form distorted CuO5 square pyramids that share corners with four equivalent Cu(1)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(1), one O(13), one O(14), and one O(3) atom to form GaO4 tetrahedra that share  a cornercorner with one Cu(1)O5 square pyramid,  a cornercorner with one Cu(3)O5 square pyramid, and corners with two equivalent Ga(2)O4 tetrahedra. In the second Ga site, Ga(2) is bonded to one O(13), one O(14), one O(2), and one O(4) atom to form GaO4 tetrahedra that share  a cornercorner with one Cu(2)O5 square pyramid,  a cornercorner with one Cu(4)O5 square pyramid, and corners with two equivalent Ga(1)O4 tetrahedra. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ca(3), one La(1), one Cu(1), and one Ga(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ca(1), one Ca(2), one Cu(2), and one Ga(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ca(1), one Ca(2), one Cu(3), and one Ga(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Ca(3), two equivalent La(1), one Cu(4), and one Ga(2) atom. In the fifth O site, O(5) is bonded to one Ca(3), one Ca(4), one La(1), one La(2), one Cu(1), and one Cu(4) atom to form distorted OCa2La2Cu2 octahedra that share corners with two equivalent O(9)Ca2La2Cu2 octahedra, corners with two equivalent O(10)Ca3LaCu2 octahedra, corners with two equivalent O(6)Ca3LaCu2 octahedra, corners with two equivalent O(7)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(11)Ca3LaCu2 octahedra, edges with two equivalent O(9)Ca2La2Cu2 octahedra, faces with two equivalent O(12)Ca2La2Cu2 octahedra, and faces with two equivalent O(8)Ca2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the sixth O site, O(6) is bonded to one Ca(1), one Ca(2), one Ca(4), one La(2), one Cu(2), and one Cu(3) atom to form distorted OCa3LaCu2 octahedra that share corners with two equivalent O(5)Ca2La2Cu2 octahedra, corners with two equivalent O(8)Ca2La2Cu2 octahedra, corners with two equivalent O(9)Ca2La2Cu2 octahedra, corners with two equivalent O(10)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(12)Ca2La2Cu2 octahedra, edges with two equivalent O(10)Ca3LaCu2 octahedra, faces with two equivalent O(11)Ca3LaCu2 octahedra, and faces with two equivalent O(7)Ca3LaCu2 octahedra. The corner-sharing octahedral tilt angles range from 2-68°. In the seventh O site, O(7) is bonded to one Ca(1), one Ca(2), one Ca(4), one La(2), one Cu(2), and one Cu(3) atom to form distorted OCa3LaCu2 octahedra that share corners with two equivalent O(12)Ca2La2Cu2 octahedra, corners with two equivalent O(5)Ca2La2Cu2 octahedra, corners with two equivalent O(8)Ca2La2Cu2 octahedra, corners with two equivalent O(11)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(9)Ca2La2Cu2 octahedra, edges with two equivalent O(11)Ca3LaCu2 octahedra, faces with two equivalent O(10)Ca3LaCu2 octahedra, and faces with two equivalent O(6)Ca3LaCu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the eighth O site, O(8) is bonded to one Ca(3), one Ca(4), one La(1), one La(2), one Cu(1), and one Cu(4) atom to form distorted OCa2La2Cu2 octahedra that share corners with two equivalent O(12)Ca2La2Cu2 octahedra, corners with two equivalent O(11)Ca3LaCu2 octahedra, corners with two equivalent O(6)Ca3LaCu2 octahedra, corners with two equivalent O(7)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(10)Ca3LaCu2 octahedra, edges with two equivalent O(12)Ca2La2Cu2 octahedra, faces with two equivalent O(5)Ca2La2Cu2 octahedra, and faces with two equivalent O(9)Ca2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the ninth O site, O(9) is bonded to one Ca(3), one Ca(4), one La(1), one La(2), one Cu(1), and one Cu(4) atom to form distorted OCa2La2Cu2 octahedra that share corners with two equivalent O(5)Ca2La2Cu2 octahedra, corners with two equivalent O(10)Ca3LaCu2 octahedra, corners with two equivalent O(11)Ca3LaCu2 octahedra, corners with two equivalent O(6)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(7)Ca3LaCu2 octahedra, edges with two equivalent O(5)Ca2La2Cu2 octahedra, faces with two equivalent O(12)Ca2La2Cu2 octahedra, and faces with two equivalent O(8)Ca2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the tenth O site, O(10) is bonded to one Ca(1), one Ca(2), one Ca(4), one La(2), one Cu(2), and one Cu(3) atom to form distorted OCa3LaCu2 octahedra that share corners with two equivalent O(12)Ca2La2Cu2 octahedra, corners with two equivalent O(5)Ca2La2Cu2 octahedra, corners with two equivalent O(9)Ca2La2Cu2 octahedra, corners with two equivalent O(6)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(8)Ca2La2Cu2 octahedra, edges with two equivalent O(6)Ca3LaCu2 octahedra, faces with two equivalent O(11)Ca3LaCu2 octahedra, and faces with two equivalent O(7)Ca3LaCu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the eleventh O site, O(11) is bonded to one Ca(1), one Ca(2), one Ca(4), one La(2), one Cu(2), and one Cu(3) atom to form distorted OCa3LaCu2 octahedra that share corners with two equivalent O(12)Ca2La2Cu2 octahedra, corners with two equivalent O(8)Ca2La2Cu2 octahedra, corners with two equivalent O(9)Ca2La2Cu2 octahedra, corners with two equivalent O(7)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(5)Ca2La2Cu2 octahedra, edges with two equivalent O(7)Ca3LaCu2 octahedra, faces with two equivalent O(10)Ca3LaCu2 octahedra, and faces with two equivalent O(6)Ca3LaCu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the twelfth O site, O(12) is bonded to one Ca(3), one Ca(4), one La(1), one La(2), one Cu(1), and one Cu(4) atom to form distorted OCa2La2Cu2 octahedra that share corners with two equivalent O(8)Ca2La2Cu2 octahedra, corners with two equivalent O(10)Ca3LaCu2 octahedra, corners with two equivalent O(11)Ca3LaCu2 octahedra, corners with two equivalent O(7)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(6)Ca3LaCu2 octahedra, edges with two equivalent O(8)Ca2La2Cu2 octahedra, faces with two equivalent O(5)Ca2La2Cu2 octahedra, and faces with two equivalent O(9)Ca2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the thirteenth O site, O(13) is bonded to one Ca(1), one Ca(3), one Ga(1), and one Ga(2) atom to form distorted OCa2Ga2 tetrahedra that share  a cornercorner with one O(12)Ca2La2Cu2 octahedra,  a cornercorner with one O(5)Ca2La2Cu2 octahedra,  a cornercorner with one O(8)Ca2La2Cu2 octahedra,  a cornercorner with one O(9)Ca2La2Cu2 octahedra,  a cornercorner with one O(10)Ca3LaCu2 octahedra,  a cornercorner with one O(11)Ca3LaCu2 octahedra,  a cornercorner with one O(6)Ca3LaCu2 octahedra,  a cornercorner with one O(7)Ca3LaCu2 octahedra, and corners with two equivalent O(14)CaLaGa2 tetrahedra. The corner-sharing octahedral tilt angles range from 19-77°. In the fourteenth O site, O(14) is bonded to one Ca(2), one La(1), one Ga(1), and one Ga(2) atom to form distorted OCaLaGa2 tetrahedra that share  a cornercorner with one O(12)Ca2La2Cu2 octahedra,  a cornercorner with one O(5)Ca2La2Cu2 octahedra,  a cornercorner with one O(8)Ca2La2Cu2 octahedra,  a cornercorner with one O(9)Ca2La2Cu2 octahedra,  a cornercorner with one O(10)Ca3LaCu2 octahedra,  a cornercorner with one O(11)Ca3LaCu2 octahedra,  a cornercorner with one O(6)Ca3LaCu2 octahedra,  a cornercorner with one O(7)Ca3LaCu2 octahedra, and corners with two equivalent O(13)Ca2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 18-77°. is represented by the CIF file [CIF]
data_Ca2LaGaCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.416
_cell_length_b   5.574
_cell_length_c   11.827
_cell_angle_alpha   103.198
_cell_angle_beta   103.119
_cell_angle_gamma   89.930
_symmetry_Int_Tables_number   1
_cell_volume   338.015
_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
  Ca  Ca0  1  0.654  0.615  0.300  1.0
  Ca  Ca1  1  0.156  0.190  0.303  1.0
  Ca  Ca2  1  0.851  0.817  0.696  1.0
  Ca  Ca3  1  0.499  0.510  0.009  1.0
  La  La4  1  0.350  0.374  0.703  1.0
  La  La5  1  0.996  0.000  0.002  1.0
  Ga  Ga6  1  0.280  0.813  0.496  1.0
  Ga  Ga7  1  0.776  0.179  0.496  1.0
  Cu  Cu8  1  0.419  0.928  0.851  1.0
  Cu  Cu9  1  0.571  0.077  0.155  1.0
  Cu  Cu10  1  0.070  0.581  0.155  1.0
  Cu  Cu11  1  0.919  0.422  0.853  1.0
  O  O12  1  0.270  0.756  0.642  1.0
  O  O13  1  0.621  0.248  0.355  1.0
  O  O14  1  0.123  0.608  0.356  1.0
  O  O15  1  0.776  0.389  0.641  1.0
  O  O16  1  0.180  0.674  0.862  1.0
  O  O17  1  0.312  0.322  0.135  1.0
  O  O18  1  0.811  0.318  0.136  1.0
  O  O19  1  0.674  0.680  0.862  1.0
  O  O20  1  0.666  0.173  0.846  1.0
  O  O21  1  0.820  0.828  0.150  1.0
  O  O22  1  0.319  0.825  0.150  1.0
  O  O23  1  0.168  0.174  0.846  1.0
  O  O24  1  0.636  0.867  0.501  1.0
  O  O25  1  0.134  0.131  0.498  1.0
[/CIF]
.
The material described by Ca2LaCu2GaO7 crystallizes in the triclinic P1 space group. There are four inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(13), one O(2), one O(3), one O(6), and one O(7) atom. In the second Ca site, Ca(2) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(14), one O(2), one O(3), one O(6), and one O(7) atom. In the third Ca site, Ca(3) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(13), one O(4), one O(5), one O(8), and one O(9) atom. In the fourth Ca site, Ca(4) is bonded in a body-centered cubic geometry to one O(10), one O(11), one O(12), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(14), one O(5), one O(8), one O(9), and two equivalent O(4) atoms. In the second La site, La(2) is bonded in a body-centered cubic geometry to one O(10), one O(11), one O(12), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(12), one O(5), one O(8), and one O(9) atom to form distorted CuO5 square pyramids that share corners with four equivalent Cu(4)O5 square pyramids and  a cornercorner with one Ga(1)O4 tetrahedra. In the second Cu site, Cu(2) is bonded to one O(10), one O(11), one O(2), one O(6), and one O(7) atom to form CuO5 square pyramids that share corners with four equivalent Cu(3)O5 square pyramids and  a cornercorner with one Ga(2)O4 tetrahedra. In the third Cu site, Cu(3) is bonded to one O(10), one O(11), one O(3), one O(6), and one O(7) atom to form CuO5 square pyramids that share corners with four equivalent Cu(2)O5 square pyramids and  a cornercorner with one Ga(1)O4 tetrahedra. In the fourth Cu site, Cu(4) is bonded to one O(12), one O(4), one O(5), one O(8), and one O(9) atom to form distorted CuO5 square pyramids that share corners with four equivalent Cu(1)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(1), one O(13), one O(14), and one O(3) atom to form GaO4 tetrahedra that share  a cornercorner with one Cu(1)O5 square pyramid,  a cornercorner with one Cu(3)O5 square pyramid, and corners with two equivalent Ga(2)O4 tetrahedra. In the second Ga site, Ga(2) is bonded to one O(13), one O(14), one O(2), and one O(4) atom to form GaO4 tetrahedra that share  a cornercorner with one Cu(2)O5 square pyramid,  a cornercorner with one Cu(4)O5 square pyramid, and corners with two equivalent Ga(1)O4 tetrahedra. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ca(3), one La(1), one Cu(1), and one Ga(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ca(1), one Ca(2), one Cu(2), and one Ga(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ca(1), one Ca(2), one Cu(3), and one Ga(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Ca(3), two equivalent La(1), one Cu(4), and one Ga(2) atom. In the fifth O site, O(5) is bonded to one Ca(3), one Ca(4), one La(1), one La(2), one Cu(1), and one Cu(4) atom to form distorted OCa2La2Cu2 octahedra that share corners with two equivalent O(9)Ca2La2Cu2 octahedra, corners with two equivalent O(10)Ca3LaCu2 octahedra, corners with two equivalent O(6)Ca3LaCu2 octahedra, corners with two equivalent O(7)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(11)Ca3LaCu2 octahedra, edges with two equivalent O(9)Ca2La2Cu2 octahedra, faces with two equivalent O(12)Ca2La2Cu2 octahedra, and faces with two equivalent O(8)Ca2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the sixth O site, O(6) is bonded to one Ca(1), one Ca(2), one Ca(4), one La(2), one Cu(2), and one Cu(3) atom to form distorted OCa3LaCu2 octahedra that share corners with two equivalent O(5)Ca2La2Cu2 octahedra, corners with two equivalent O(8)Ca2La2Cu2 octahedra, corners with two equivalent O(9)Ca2La2Cu2 octahedra, corners with two equivalent O(10)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(12)Ca2La2Cu2 octahedra, edges with two equivalent O(10)Ca3LaCu2 octahedra, faces with two equivalent O(11)Ca3LaCu2 octahedra, and faces with two equivalent O(7)Ca3LaCu2 octahedra. The corner-sharing octahedral tilt angles range from 2-68°. In the seventh O site, O(7) is bonded to one Ca(1), one Ca(2), one Ca(4), one La(2), one Cu(2), and one Cu(3) atom to form distorted OCa3LaCu2 octahedra that share corners with two equivalent O(12)Ca2La2Cu2 octahedra, corners with two equivalent O(5)Ca2La2Cu2 octahedra, corners with two equivalent O(8)Ca2La2Cu2 octahedra, corners with two equivalent O(11)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(9)Ca2La2Cu2 octahedra, edges with two equivalent O(11)Ca3LaCu2 octahedra, faces with two equivalent O(10)Ca3LaCu2 octahedra, and faces with two equivalent O(6)Ca3LaCu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the eighth O site, O(8) is bonded to one Ca(3), one Ca(4), one La(1), one La(2), one Cu(1), and one Cu(4) atom to form distorted OCa2La2Cu2 octahedra that share corners with two equivalent O(12)Ca2La2Cu2 octahedra, corners with two equivalent O(11)Ca3LaCu2 octahedra, corners with two equivalent O(6)Ca3LaCu2 octahedra, corners with two equivalent O(7)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(10)Ca3LaCu2 octahedra, edges with two equivalent O(12)Ca2La2Cu2 octahedra, faces with two equivalent O(5)Ca2La2Cu2 octahedra, and faces with two equivalent O(9)Ca2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the ninth O site, O(9) is bonded to one Ca(3), one Ca(4), one La(1), one La(2), one Cu(1), and one Cu(4) atom to form distorted OCa2La2Cu2 octahedra that share corners with two equivalent O(5)Ca2La2Cu2 octahedra, corners with two equivalent O(10)Ca3LaCu2 octahedra, corners with two equivalent O(11)Ca3LaCu2 octahedra, corners with two equivalent O(6)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(7)Ca3LaCu2 octahedra, edges with two equivalent O(5)Ca2La2Cu2 octahedra, faces with two equivalent O(12)Ca2La2Cu2 octahedra, and faces with two equivalent O(8)Ca2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the tenth O site, O(10) is bonded to one Ca(1), one Ca(2), one Ca(4), one La(2), one Cu(2), and one Cu(3) atom to form distorted OCa3LaCu2 octahedra that share corners with two equivalent O(12)Ca2La2Cu2 octahedra, corners with two equivalent O(5)Ca2La2Cu2 octahedra, corners with two equivalent O(9)Ca2La2Cu2 octahedra, corners with two equivalent O(6)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(8)Ca2La2Cu2 octahedra, edges with two equivalent O(6)Ca3LaCu2 octahedra, faces with two equivalent O(11)Ca3LaCu2 octahedra, and faces with two equivalent O(7)Ca3LaCu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the eleventh O site, O(11) is bonded to one Ca(1), one Ca(2), one Ca(4), one La(2), one Cu(2), and one Cu(3) atom to form distorted OCa3LaCu2 octahedra that share corners with two equivalent O(12)Ca2La2Cu2 octahedra, corners with two equivalent O(8)Ca2La2Cu2 octahedra, corners with two equivalent O(9)Ca2La2Cu2 octahedra, corners with two equivalent O(7)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(5)Ca2La2Cu2 octahedra, edges with two equivalent O(7)Ca3LaCu2 octahedra, faces with two equivalent O(10)Ca3LaCu2 octahedra, and faces with two equivalent O(6)Ca3LaCu2 octahedra. The corner-sharing octahedral tilt angles range from 1-67°. In the twelfth O site, O(12) is bonded to one Ca(3), one Ca(4), one La(1), one La(2), one Cu(1), and one Cu(4) atom to form distorted OCa2La2Cu2 octahedra that share corners with two equivalent O(8)Ca2La2Cu2 octahedra, corners with two equivalent O(10)Ca3LaCu2 octahedra, corners with two equivalent O(11)Ca3LaCu2 octahedra, corners with two equivalent O(7)Ca3LaCu2 octahedra,  a cornercorner with one O(13)Ca2Ga2 tetrahedra,  a cornercorner with one O(14)CaLaGa2 tetrahedra,  an edgeedge with one O(6)Ca3LaCu2 octahedra, edges with two equivalent O(8)Ca2La2Cu2 octahedra, faces with two equivalent O(5)Ca2La2Cu2 octahedra, and faces with two equivalent O(9)Ca2La2Cu2 octahedra. The corner-sharing octahedral tilt angles range from 1-68°. In the thirteenth O site, O(13) is bonded to one Ca(1), one Ca(3), one Ga(1), and one Ga(2) atom to form distorted OCa2Ga2 tetrahedra that share  a cornercorner with one O(12)Ca2La2Cu2 octahedra,  a cornercorner with one O(5)Ca2La2Cu2 octahedra,  a cornercorner with one O(8)Ca2La2Cu2 octahedra,  a cornercorner with one O(9)Ca2La2Cu2 octahedra,  a cornercorner with one O(10)Ca3LaCu2 octahedra,  a cornercorner with one O(11)Ca3LaCu2 octahedra,  a cornercorner with one O(6)Ca3LaCu2 octahedra,  a cornercorner with one O(7)Ca3LaCu2 octahedra, and corners with two equivalent O(14)CaLaGa2 tetrahedra. The corner-sharing octahedral tilt angles range from 19-77°. In the fourteenth O site, O(14) is bonded to one Ca(2), one La(1), one Ga(1), and one Ga(2) atom to form distorted OCaLaGa2 tetrahedra that share  a cornercorner with one O(12)Ca2La2Cu2 octahedra,  a cornercorner with one O(5)Ca2La2Cu2 octahedra,  a cornercorner with one O(8)Ca2La2Cu2 octahedra,  a cornercorner with one O(9)Ca2La2Cu2 octahedra,  a cornercorner with one O(10)Ca3LaCu2 octahedra,  a cornercorner with one O(11)Ca3LaCu2 octahedra,  a cornercorner with one O(6)Ca3LaCu2 octahedra,  a cornercorner with one O(7)Ca3LaCu2 octahedra, and corners with two equivalent O(13)Ca2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 18-77°. is represented by the CIF file [CIF]
data_Ca2LaGaCu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.416
_cell_length_b   5.574
_cell_length_c   11.827
_cell_angle_alpha   103.198
_cell_angle_beta   103.119
_cell_angle_gamma   89.930
_symmetry_Int_Tables_number   1
_cell_volume   338.015
_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
  Ca  Ca0  1  0.654  0.615  0.300  1.0
  Ca  Ca1  1  0.156  0.190  0.303  1.0
  Ca  Ca2  1  0.851  0.817  0.696  1.0
  Ca  Ca3  1  0.499  0.510  0.009  1.0
  La  La4  1  0.350  0.374  0.703  1.0
  La  La5  1  0.996  0.000  0.002  1.0
  Ga  Ga6  1  0.280  0.813  0.496  1.0
  Ga  Ga7  1  0.776  0.179  0.496  1.0
  Cu  Cu8  1  0.419  0.928  0.851  1.0
  Cu  Cu9  1  0.571  0.077  0.155  1.0
  Cu  Cu10  1  0.070  0.581  0.155  1.0
  Cu  Cu11  1  0.919  0.422  0.853  1.0
  O  O12  1  0.270  0.756  0.642  1.0
  O  O13  1  0.621  0.248  0.355  1.0
  O  O14  1  0.123  0.608  0.356  1.0
  O  O15  1  0.776  0.389  0.641  1.0
  O  O16  1  0.180  0.674  0.862  1.0
  O  O17  1  0.312  0.322  0.135  1.0
  O  O18  1  0.811  0.318  0.136  1.0
  O  O19  1  0.674  0.680  0.862  1.0
  O  O20  1  0.666  0.173  0.846  1.0
  O  O21  1  0.820  0.828  0.150  1.0
  O  O22  1  0.319  0.825  0.150  1.0
  O  O23  1  0.168  0.174  0.846  1.0
  O  O24  1  0.636  0.867  0.501  1.0
  O  O25  1  0.134  0.131  0.498  1.0
[/CIF]
.