The crystal structure described by ErLa9O15 crystallizes in the triclinic P1 space group. Er(1) is bonded in a 7-coordinate geometry to one O(12), one O(13), one O(15), one O(2), one O(5), one O(8), and one O(9) atom. There are nine inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(2), one O(3), one O(5), one O(6), and one O(8) atom. In the second La site, La(2) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(15), one O(2), one O(7), and one O(8) atom. In the third La site, La(3) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(13), one O(14), one O(3), one O(5), and one O(6) atom. In the fourth La site, La(4) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(15), one O(3), one O(4), and one O(6) atom. In the fifth La site, La(5) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(14), one O(3), one O(4), one O(6), and one O(8) atom. In the sixth La site, La(6) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(15), one O(3), one O(4), one O(7), and one O(9) atom. In the seventh La site, La(7) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(15), one O(2), one O(7), one O(8), and one O(9) atom. In the eighth La site, La(8) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(13), one O(14), one O(3), one O(4), and one O(7) atom. In the ninth La site, La(9) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(14), one O(15), one O(5), one O(8), and one O(9) atom. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded to one La(2), one La(3), one La(4), one La(6), one La(7), and one La(8) atom to form OLa6 octahedra that share  a cornercorner with one O(12)La3Er tetrahedra,  a cornercorner with one O(5)La3Er tetrahedra,  a cornercorner with one O(10)La4 tetrahedra,  a cornercorner with one O(4)La4 tetrahedra, corners with two equivalent O(2)La3Er tetrahedra, corners with two equivalent O(11)La4 tetrahedra, corners with two equivalent O(14)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra, edges with two equivalent O(15)La5Er octahedra, edges with two equivalent O(3)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(11)La4 tetrahedra,  an edgeedge with one O(4)La4 tetrahedra,  an edgeedge with one O(6)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. In the second O site, O(2) is bonded to one Er(1), one La(1), one La(2), and one La(7) atom to form OLa3Er tetrahedra that share  a cornercorner with one O(15)La5Er octahedra,  a cornercorner with one O(3)La6 octahedra, corners with two equivalent O(8)La5Er octahedra, corners with two equivalent O(1)La6 octahedra,  a cornercorner with one O(11)La4 tetrahedra,  a cornercorner with one O(6)La4 tetrahedra, corners with two equivalent O(12)La3Er tetrahedra, corners with two equivalent O(5)La3Er tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-58°. In the third O site, O(3) is bonded to one La(1), one La(3), one La(4), one La(5), one La(6), and one La(8) atom to form OLa6 octahedra that share  a cornercorner with one O(2)La3Er tetrahedra,  a cornercorner with one O(9)La3Er tetrahedra,  a cornercorner with one O(11)La4 tetrahedra,  a cornercorner with one O(14)La4 tetrahedra, corners with two equivalent O(12)La3Er tetrahedra, corners with two equivalent O(10)La4 tetrahedra, corners with two equivalent O(4)La4 tetrahedra, corners with two equivalent O(6)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra, edges with two equivalent O(13)La5Er octahedra, edges with two equivalent O(1)La6 octahedra,  an edgeedge with one O(5)La3Er tetrahedra,  an edgeedge with one O(11)La4 tetrahedra,  an edgeedge with one O(14)La4 tetrahedra,  an edgeedge with one O(4)La4 tetrahedra,  an edgeedge with one O(6)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. In the fourth O site, O(4) is bonded to one La(4), one La(5), one La(6), and one La(8) atom to form OLa4 tetrahedra that share  a cornercorner with one O(8)La5Er octahedra,  a cornercorner with one O(1)La6 octahedra, corners with two equivalent O(15)La5Er octahedra, corners with two equivalent O(3)La6 octahedra,  a cornercorner with one O(9)La3Er tetrahedra,  a cornercorner with one O(10)La4 tetrahedra, corners with two equivalent O(14)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(11)La4 tetrahedra, and  an edgeedge with one O(6)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 17-57°. In the fifth O site, O(5) is bonded to one Er(1), one La(1), one La(3), and one La(9) atom to form OLa3Er tetrahedra that share  a cornercorner with one O(8)La5Er octahedra,  a cornercorner with one O(1)La6 octahedra, corners with two equivalent O(13)La5Er octahedra, corners with two equivalent O(15)La5Er octahedra,  a cornercorner with one O(12)La3Er tetrahedra,  a cornercorner with one O(11)La4 tetrahedra, corners with two equivalent O(2)La3Er tetrahedra, corners with two equivalent O(6)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra, and  an edgeedge with one O(14)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-59°. In the sixth O site, O(6) is bonded to one La(1), one La(3), one La(4), and one La(5) atom to form OLa4 tetrahedra that share  a cornercorner with one O(13)La5Er octahedra,  a cornercorner with one O(15)La5Er octahedra, corners with two equivalent O(8)La5Er octahedra, corners with two equivalent O(3)La6 octahedra,  a cornercorner with one O(12)La3Er tetrahedra,  a cornercorner with one O(2)La3Er tetrahedra, corners with two equivalent O(5)La3Er tetrahedra, corners with two equivalent O(11)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(10)La4 tetrahedra,  an edgeedge with one O(14)La4 tetrahedra, and  an edgeedge with one O(4)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-57°. In the seventh O site, O(7) is bonded to one La(2), one La(6), one La(7), and one La(8) atom to form OLa4 tetrahedra that share  a cornercorner with one O(13)La5Er octahedra,  a cornercorner with one O(15)La5Er octahedra, corners with two equivalent O(8)La5Er octahedra, corners with two equivalent O(1)La6 octahedra,  a cornercorner with one O(10)La4 tetrahedra,  a cornercorner with one O(14)La4 tetrahedra, corners with two equivalent O(9)La3Er tetrahedra, corners with two equivalent O(4)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(2)La3Er tetrahedra, and  an edgeedge with one O(11)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 17-57°. In the eighth O site, O(8) is bonded to one Er(1), one La(1), one La(2), one La(5), one La(7), and one La(9) atom to form OLa5Er octahedra that share  a cornercorner with one O(5)La3Er tetrahedra,  a cornercorner with one O(9)La3Er tetrahedra,  a cornercorner with one O(11)La4 tetrahedra,  a cornercorner with one O(4)La4 tetrahedra, corners with two equivalent O(2)La3Er tetrahedra, corners with two equivalent O(10)La4 tetrahedra, corners with two equivalent O(6)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra, edges with two equivalent O(13)La5Er octahedra, edges with two equivalent O(15)La5Er octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(2)La3Er tetrahedra,  an edgeedge with one O(5)La3Er tetrahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra, and  an edgeedge with one O(14)La4 tetrahedra. In the ninth O site, O(9) is bonded to one Er(1), one La(6), one La(7), and one La(9) atom to form OLa3Er tetrahedra that share  a cornercorner with one O(8)La5Er octahedra,  a cornercorner with one O(3)La6 octahedra, corners with two equivalent O(13)La5Er octahedra, corners with two equivalent O(15)La5Er octahedra,  a cornercorner with one O(14)La4 tetrahedra,  a cornercorner with one O(4)La4 tetrahedra, corners with two equivalent O(10)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(2)La3Er tetrahedra, and  an edgeedge with one O(5)La3Er tetrahedra. The corner-sharing octahedral tilt angles range from 16-54°. In the tenth O site, O(10) is bonded to one La(1), one La(5), one La(7), and one La(9) atom to form OLa4 tetrahedra that share  a cornercorner with one O(13)La5Er octahedra,  a cornercorner with one O(1)La6 octahedra, corners with two equivalent O(8)La5Er octahedra, corners with two equivalent O(3)La6 octahedra,  a cornercorner with one O(4)La4 tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(9)La3Er tetrahedra, corners with two equivalent O(14)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(2)La3Er tetrahedra,  an edgeedge with one O(5)La3Er tetrahedra, and  an edgeedge with one O(6)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-57°. In the eleventh O site, O(11) is bonded to one La(2), one La(3), one La(4), and one La(8) atom to form OLa4 tetrahedra that share  a cornercorner with one O(8)La5Er octahedra,  a cornercorner with one O(3)La6 octahedra, corners with two equivalent O(13)La5Er octahedra, corners with two equivalent O(1)La6 octahedra,  a cornercorner with one O(2)La3Er tetrahedra,  a cornercorner with one O(5)La3Er tetrahedra, corners with two equivalent O(12)La3Er tetrahedra, corners with two equivalent O(6)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(14)La4 tetrahedra,  an edgeedge with one O(4)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-57°. In the twelfth O site, O(12) is bonded to one Er(1), one La(2), one La(4), and one La(6) atom to form OLa3Er tetrahedra that share  a cornercorner with one O(13)La5Er octahedra,  a cornercorner with one O(1)La6 octahedra, corners with two equivalent O(15)La5Er octahedra, corners with two equivalent O(3)La6 octahedra,  a cornercorner with one O(5)La3Er tetrahedra,  a cornercorner with one O(6)La4 tetrahedra, corners with two equivalent O(2)La3Er tetrahedra, corners with two equivalent O(11)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(4)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-58°. In the thirteenth O site, O(13) is bonded to one Er(1), one La(1), one La(3), one La(5), one La(8), and one La(9) atom to form OLa5Er octahedra that share  a cornercorner with one O(12)La3Er tetrahedra,  a cornercorner with one O(10)La4 tetrahedra,  a cornercorner with one O(6)La4 tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(5)La3Er tetrahedra, corners with two equivalent O(9)La3Er tetrahedra, corners with two equivalent O(11)La4 tetrahedra, corners with two equivalent O(14)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra, edges with two equivalent O(8)La5Er octahedra, edges with two equivalent O(3)La6 octahedra,  an edgeedge with one O(2)La3Er tetrahedra,  an edgeedge with one O(5)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra,  an edgeedge with one O(14)La4 tetrahedra,  an edgeedge with one O(4)La4 tetrahedra, and  an edgeedge with one O(6)La4 tetrahedra. In the fourteenth O site, O(14) is bonded to one La(3), one La(5), one La(8), and one La(9) atom to form OLa4 tetrahedra that share  a cornercorner with one O(15)La5Er octahedra,  a cornercorner with one O(3)La6 octahedra, corners with two equivalent O(13)La5Er octahedra, corners with two equivalent O(1)La6 octahedra,  a cornercorner with one O(9)La3Er tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(10)La4 tetrahedra, corners with two equivalent O(4)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(5)La3Er tetrahedra,  an edgeedge with one O(11)La4 tetrahedra, and  an edgeedge with one O(6)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 17-57°. In the fifteenth O site, O(15) is bonded to one Er(1), one La(2), one La(4), one La(6), one La(7), and one La(9) atom to form OLa5Er octahedra that share  a cornercorner with one O(2)La3Er tetrahedra,  a cornercorner with one O(14)La4 tetrahedra,  a cornercorner with one O(6)La4 tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(12)La3Er tetrahedra, corners with two equivalent O(5)La3Er tetrahedra, corners with two equivalent O(9)La3Er tetrahedra, corners with two equivalent O(4)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(3)La6 octahedra, edges with two equivalent O(8)La5Er octahedra, edges with two equivalent O(1)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(2)La3Er tetrahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra,  an edgeedge with one O(11)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. is represented by the CIF card [CIF]
data_La9ErO15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.972
_cell_length_b   6.790
_cell_length_c   7.302
_cell_angle_alpha   62.296
_cell_angle_beta   108.058
_cell_angle_gamma   90.001
_symmetry_Int_Tables_number   1
_cell_volume   410.047
_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
  La  La0  1  0.451  0.231  0.205  1.0
  La  La1  1  0.847  0.033  0.599  1.0
  La  La2  1  0.252  0.831  0.005  1.0
  La  La3  1  0.047  0.433  0.800  1.0
  La  La4  1  0.353  0.370  0.595  1.0
  La  La5  1  0.949  0.570  0.197  1.0
  La  La6  1  0.749  0.170  0.992  1.0
  La  La7  1  0.151  0.969  0.397  1.0
  La  La8  1  0.552  0.766  0.796  1.0
  Er  Er9  1  0.653  0.640  0.386  1.0
  O  O10  1  0.999  1.000  0.999  1.0
  O  O11  1  0.670  0.991  0.321  1.0
  O  O12  1  0.200  0.400  0.200  1.0
  O  O13  1  0.128  0.591  0.483  1.0
  O  O14  1  0.479  0.608  0.131  1.0
  O  O15  1  0.271  0.208  0.918  1.0
  O  O16  1  0.928  0.192  0.284  1.0
  O  O17  1  0.601  0.206  0.600  1.0
  O  O18  1  0.727  0.789  0.090  1.0
  O  O19  1  0.529  0.390  0.889  1.0
  O  O20  1  0.071  0.809  0.717  1.0
  O  O21  1  0.861  0.418  0.511  1.0
  O  O22  1  0.404  0.794  0.404  1.0
  O  O23  1  0.330  0.990  0.684  1.0
  O  O24  1  0.796  0.600  0.796  1.0
[/CIF]
.
The crystal structure described by ErLa9O15 crystallizes in the triclinic P1 space group. Er(1) is bonded in a 7-coordinate geometry to one O(12), one O(13), one O(15), one O(2), one O(5), one O(8), and one O(9) atom. There are nine inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(2), one O(3), one O(5), one O(6), and one O(8) atom. In the second La site, La(2) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(15), one O(2), one O(7), and one O(8) atom. In the third La site, La(3) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(13), one O(14), one O(3), one O(5), and one O(6) atom. In the fourth La site, La(4) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(15), one O(3), one O(4), and one O(6) atom. In the fifth La site, La(5) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(14), one O(3), one O(4), one O(6), and one O(8) atom. In the sixth La site, La(6) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(15), one O(3), one O(4), one O(7), and one O(9) atom. In the seventh La site, La(7) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(15), one O(2), one O(7), one O(8), and one O(9) atom. In the eighth La site, La(8) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(13), one O(14), one O(3), one O(4), and one O(7) atom. In the ninth La site, La(9) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(14), one O(15), one O(5), one O(8), and one O(9) atom. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded to one La(2), one La(3), one La(4), one La(6), one La(7), and one La(8) atom to form OLa6 octahedra that share  a cornercorner with one O(12)La3Er tetrahedra,  a cornercorner with one O(5)La3Er tetrahedra,  a cornercorner with one O(10)La4 tetrahedra,  a cornercorner with one O(4)La4 tetrahedra, corners with two equivalent O(2)La3Er tetrahedra, corners with two equivalent O(11)La4 tetrahedra, corners with two equivalent O(14)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra, edges with two equivalent O(15)La5Er octahedra, edges with two equivalent O(3)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(11)La4 tetrahedra,  an edgeedge with one O(4)La4 tetrahedra,  an edgeedge with one O(6)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. In the second O site, O(2) is bonded to one Er(1), one La(1), one La(2), and one La(7) atom to form OLa3Er tetrahedra that share  a cornercorner with one O(15)La5Er octahedra,  a cornercorner with one O(3)La6 octahedra, corners with two equivalent O(8)La5Er octahedra, corners with two equivalent O(1)La6 octahedra,  a cornercorner with one O(11)La4 tetrahedra,  a cornercorner with one O(6)La4 tetrahedra, corners with two equivalent O(12)La3Er tetrahedra, corners with two equivalent O(5)La3Er tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-58°. In the third O site, O(3) is bonded to one La(1), one La(3), one La(4), one La(5), one La(6), and one La(8) atom to form OLa6 octahedra that share  a cornercorner with one O(2)La3Er tetrahedra,  a cornercorner with one O(9)La3Er tetrahedra,  a cornercorner with one O(11)La4 tetrahedra,  a cornercorner with one O(14)La4 tetrahedra, corners with two equivalent O(12)La3Er tetrahedra, corners with two equivalent O(10)La4 tetrahedra, corners with two equivalent O(4)La4 tetrahedra, corners with two equivalent O(6)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra, edges with two equivalent O(13)La5Er octahedra, edges with two equivalent O(1)La6 octahedra,  an edgeedge with one O(5)La3Er tetrahedra,  an edgeedge with one O(11)La4 tetrahedra,  an edgeedge with one O(14)La4 tetrahedra,  an edgeedge with one O(4)La4 tetrahedra,  an edgeedge with one O(6)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. In the fourth O site, O(4) is bonded to one La(4), one La(5), one La(6), and one La(8) atom to form OLa4 tetrahedra that share  a cornercorner with one O(8)La5Er octahedra,  a cornercorner with one O(1)La6 octahedra, corners with two equivalent O(15)La5Er octahedra, corners with two equivalent O(3)La6 octahedra,  a cornercorner with one O(9)La3Er tetrahedra,  a cornercorner with one O(10)La4 tetrahedra, corners with two equivalent O(14)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(11)La4 tetrahedra, and  an edgeedge with one O(6)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 17-57°. In the fifth O site, O(5) is bonded to one Er(1), one La(1), one La(3), and one La(9) atom to form OLa3Er tetrahedra that share  a cornercorner with one O(8)La5Er octahedra,  a cornercorner with one O(1)La6 octahedra, corners with two equivalent O(13)La5Er octahedra, corners with two equivalent O(15)La5Er octahedra,  a cornercorner with one O(12)La3Er tetrahedra,  a cornercorner with one O(11)La4 tetrahedra, corners with two equivalent O(2)La3Er tetrahedra, corners with two equivalent O(6)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra, and  an edgeedge with one O(14)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-59°. In the sixth O site, O(6) is bonded to one La(1), one La(3), one La(4), and one La(5) atom to form OLa4 tetrahedra that share  a cornercorner with one O(13)La5Er octahedra,  a cornercorner with one O(15)La5Er octahedra, corners with two equivalent O(8)La5Er octahedra, corners with two equivalent O(3)La6 octahedra,  a cornercorner with one O(12)La3Er tetrahedra,  a cornercorner with one O(2)La3Er tetrahedra, corners with two equivalent O(5)La3Er tetrahedra, corners with two equivalent O(11)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(10)La4 tetrahedra,  an edgeedge with one O(14)La4 tetrahedra, and  an edgeedge with one O(4)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-57°. In the seventh O site, O(7) is bonded to one La(2), one La(6), one La(7), and one La(8) atom to form OLa4 tetrahedra that share  a cornercorner with one O(13)La5Er octahedra,  a cornercorner with one O(15)La5Er octahedra, corners with two equivalent O(8)La5Er octahedra, corners with two equivalent O(1)La6 octahedra,  a cornercorner with one O(10)La4 tetrahedra,  a cornercorner with one O(14)La4 tetrahedra, corners with two equivalent O(9)La3Er tetrahedra, corners with two equivalent O(4)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(2)La3Er tetrahedra, and  an edgeedge with one O(11)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 17-57°. In the eighth O site, O(8) is bonded to one Er(1), one La(1), one La(2), one La(5), one La(7), and one La(9) atom to form OLa5Er octahedra that share  a cornercorner with one O(5)La3Er tetrahedra,  a cornercorner with one O(9)La3Er tetrahedra,  a cornercorner with one O(11)La4 tetrahedra,  a cornercorner with one O(4)La4 tetrahedra, corners with two equivalent O(2)La3Er tetrahedra, corners with two equivalent O(10)La4 tetrahedra, corners with two equivalent O(6)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra, edges with two equivalent O(13)La5Er octahedra, edges with two equivalent O(15)La5Er octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(2)La3Er tetrahedra,  an edgeedge with one O(5)La3Er tetrahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra, and  an edgeedge with one O(14)La4 tetrahedra. In the ninth O site, O(9) is bonded to one Er(1), one La(6), one La(7), and one La(9) atom to form OLa3Er tetrahedra that share  a cornercorner with one O(8)La5Er octahedra,  a cornercorner with one O(3)La6 octahedra, corners with two equivalent O(13)La5Er octahedra, corners with two equivalent O(15)La5Er octahedra,  a cornercorner with one O(14)La4 tetrahedra,  a cornercorner with one O(4)La4 tetrahedra, corners with two equivalent O(10)La4 tetrahedra, corners with two equivalent O(7)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(2)La3Er tetrahedra, and  an edgeedge with one O(5)La3Er tetrahedra. The corner-sharing octahedral tilt angles range from 16-54°. In the tenth O site, O(10) is bonded to one La(1), one La(5), one La(7), and one La(9) atom to form OLa4 tetrahedra that share  a cornercorner with one O(13)La5Er octahedra,  a cornercorner with one O(1)La6 octahedra, corners with two equivalent O(8)La5Er octahedra, corners with two equivalent O(3)La6 octahedra,  a cornercorner with one O(4)La4 tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(9)La3Er tetrahedra, corners with two equivalent O(14)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(2)La3Er tetrahedra,  an edgeedge with one O(5)La3Er tetrahedra, and  an edgeedge with one O(6)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-57°. In the eleventh O site, O(11) is bonded to one La(2), one La(3), one La(4), and one La(8) atom to form OLa4 tetrahedra that share  a cornercorner with one O(8)La5Er octahedra,  a cornercorner with one O(3)La6 octahedra, corners with two equivalent O(13)La5Er octahedra, corners with two equivalent O(1)La6 octahedra,  a cornercorner with one O(2)La3Er tetrahedra,  a cornercorner with one O(5)La3Er tetrahedra, corners with two equivalent O(12)La3Er tetrahedra, corners with two equivalent O(6)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(14)La4 tetrahedra,  an edgeedge with one O(4)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-57°. In the twelfth O site, O(12) is bonded to one Er(1), one La(2), one La(4), and one La(6) atom to form OLa3Er tetrahedra that share  a cornercorner with one O(13)La5Er octahedra,  a cornercorner with one O(1)La6 octahedra, corners with two equivalent O(15)La5Er octahedra, corners with two equivalent O(3)La6 octahedra,  a cornercorner with one O(5)La3Er tetrahedra,  a cornercorner with one O(6)La4 tetrahedra, corners with two equivalent O(2)La3Er tetrahedra, corners with two equivalent O(11)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(4)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 18-58°. In the thirteenth O site, O(13) is bonded to one Er(1), one La(1), one La(3), one La(5), one La(8), and one La(9) atom to form OLa5Er octahedra that share  a cornercorner with one O(12)La3Er tetrahedra,  a cornercorner with one O(10)La4 tetrahedra,  a cornercorner with one O(6)La4 tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(5)La3Er tetrahedra, corners with two equivalent O(9)La3Er tetrahedra, corners with two equivalent O(11)La4 tetrahedra, corners with two equivalent O(14)La4 tetrahedra,  an edgeedge with one O(15)La5Er octahedra,  an edgeedge with one O(1)La6 octahedra, edges with two equivalent O(8)La5Er octahedra, edges with two equivalent O(3)La6 octahedra,  an edgeedge with one O(2)La3Er tetrahedra,  an edgeedge with one O(5)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra,  an edgeedge with one O(14)La4 tetrahedra,  an edgeedge with one O(4)La4 tetrahedra, and  an edgeedge with one O(6)La4 tetrahedra. In the fourteenth O site, O(14) is bonded to one La(3), one La(5), one La(8), and one La(9) atom to form OLa4 tetrahedra that share  a cornercorner with one O(15)La5Er octahedra,  a cornercorner with one O(3)La6 octahedra, corners with two equivalent O(13)La5Er octahedra, corners with two equivalent O(1)La6 octahedra,  a cornercorner with one O(9)La3Er tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(10)La4 tetrahedra, corners with two equivalent O(4)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(8)La5Er octahedra,  an edgeedge with one O(3)La6 octahedra,  an edgeedge with one O(5)La3Er tetrahedra,  an edgeedge with one O(11)La4 tetrahedra, and  an edgeedge with one O(6)La4 tetrahedra. The corner-sharing octahedral tilt angles range from 17-57°. In the fifteenth O site, O(15) is bonded to one Er(1), one La(2), one La(4), one La(6), one La(7), and one La(9) atom to form OLa5Er octahedra that share  a cornercorner with one O(2)La3Er tetrahedra,  a cornercorner with one O(14)La4 tetrahedra,  a cornercorner with one O(6)La4 tetrahedra,  a cornercorner with one O(7)La4 tetrahedra, corners with two equivalent O(12)La3Er tetrahedra, corners with two equivalent O(5)La3Er tetrahedra, corners with two equivalent O(9)La3Er tetrahedra, corners with two equivalent O(4)La4 tetrahedra,  an edgeedge with one O(13)La5Er octahedra,  an edgeedge with one O(3)La6 octahedra, edges with two equivalent O(8)La5Er octahedra, edges with two equivalent O(1)La6 octahedra,  an edgeedge with one O(12)La3Er tetrahedra,  an edgeedge with one O(2)La3Er tetrahedra,  an edgeedge with one O(9)La3Er tetrahedra,  an edgeedge with one O(10)La4 tetrahedra,  an edgeedge with one O(11)La4 tetrahedra, and  an edgeedge with one O(7)La4 tetrahedra. is represented by the CIF card [CIF]
data_La9ErO15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.972
_cell_length_b   6.790
_cell_length_c   7.302
_cell_angle_alpha   62.296
_cell_angle_beta   108.058
_cell_angle_gamma   90.001
_symmetry_Int_Tables_number   1
_cell_volume   410.047
_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
  La  La0  1  0.451  0.231  0.205  1.0
  La  La1  1  0.847  0.033  0.599  1.0
  La  La2  1  0.252  0.831  0.005  1.0
  La  La3  1  0.047  0.433  0.800  1.0
  La  La4  1  0.353  0.370  0.595  1.0
  La  La5  1  0.949  0.570  0.197  1.0
  La  La6  1  0.749  0.170  0.992  1.0
  La  La7  1  0.151  0.969  0.397  1.0
  La  La8  1  0.552  0.766  0.796  1.0
  Er  Er9  1  0.653  0.640  0.386  1.0
  O  O10  1  0.999  1.000  0.999  1.0
  O  O11  1  0.670  0.991  0.321  1.0
  O  O12  1  0.200  0.400  0.200  1.0
  O  O13  1  0.128  0.591  0.483  1.0
  O  O14  1  0.479  0.608  0.131  1.0
  O  O15  1  0.271  0.208  0.918  1.0
  O  O16  1  0.928  0.192  0.284  1.0
  O  O17  1  0.601  0.206  0.600  1.0
  O  O18  1  0.727  0.789  0.090  1.0
  O  O19  1  0.529  0.390  0.889  1.0
  O  O20  1  0.071  0.809  0.717  1.0
  O  O21  1  0.861  0.418  0.511  1.0
  O  O22  1  0.404  0.794  0.404  1.0
  O  O23  1  0.330  0.990  0.684  1.0
  O  O24  1  0.796  0.600  0.796  1.0
[/CIF]
.