The crystal structure described by DyCe9O20 is Fluorite-derived structured and crystallizes in the triclinic P-1 space group. Dy(1) is bonded in a body-centered cubic geometry to two equivalent O(10), two equivalent O(2), two equivalent O(3), and two equivalent O(8) atoms. There are five inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a body-centered cubic geometry to one O(10), one O(4), one O(7), one O(8), two equivalent O(1), and two equivalent O(5) atoms. In the second Ce site, Ce(2) is bonded in a body-centered cubic geometry to two equivalent O(10), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. In the third Ce site, Ce(3) is bonded in a body-centered cubic geometry to one O(1), one O(10), one O(5), one O(6), one O(8), one O(9), and two equivalent O(2) atoms. In the fourth Ce site, Ce(4) is bonded in a body-centered cubic geometry to one O(1), one O(3), one O(7), one O(8), two equivalent O(4), and two equivalent O(9) atoms. In the fifth Ce site, Ce(5) is bonded in a body-centered cubic geometry to one O(2), one O(3), one O(4), one O(5), one O(7), one O(9), and two equivalent O(6) atoms. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Ce(3), one Ce(4), and two equivalent Ce(1) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(2)Ce3Dy tetrahedra, corners with two equivalent O(4)Ce4 tetrahedra, corners with three equivalent O(5)Ce4 tetrahedra, corners with four equivalent O(8)Ce3Dy tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(7)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the second O site, O(2) is bonded to one Dy(1), one Ce(5), and two equivalent Ce(3) atoms to form OCe3Dy tetrahedra that share  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(10)Ce3Dy tetrahedra, corners with two equivalent O(8)Ce3Dy tetrahedra, corners with two equivalent O(1)Ce4 tetrahedra, corners with two equivalent O(6)Ce4 tetrahedra, corners with three equivalent O(5)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the third O site, O(3) is bonded to one Dy(1), one Ce(2), one Ce(4), and one Ce(5) atom to form OCe3Dy tetrahedra that share  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra, corners with two equivalent O(10)Ce3Dy tetrahedra, corners with two equivalent O(3)Ce3Dy tetrahedra, corners with two equivalent O(6)Ce4 tetrahedra, corners with two equivalent O(7)Ce4 tetrahedra, corners with three equivalent O(9)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(7)Ce4 tetrahedra. In the fourth O site, O(4) is bonded to one Ce(1), one Ce(5), and two equivalent Ce(4) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra, corners with two equivalent O(1)Ce4 tetrahedra, corners with two equivalent O(6)Ce4 tetrahedra, corners with three equivalent O(9)Ce4 tetrahedra, corners with four equivalent O(7)Ce4 tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the fifth O site, O(5) is bonded to one Ce(3), one Ce(5), and two equivalent Ce(1) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra, corners with two equivalent O(9)Ce4 tetrahedra, corners with three equivalent O(10)Ce3Dy tetrahedra, corners with three equivalent O(2)Ce3Dy tetrahedra, corners with three equivalent O(1)Ce4 tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(7)Ce4 tetrahedra. In the sixth O site, O(6) is bonded to one Ce(2), one Ce(3), and two equivalent Ce(5) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra, corners with two equivalent O(2)Ce3Dy tetrahedra, corners with two equivalent O(3)Ce3Dy tetrahedra, corners with two equivalent O(4)Ce4 tetrahedra, corners with two equivalent O(7)Ce4 tetrahedra, corners with three equivalent O(9)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(7)Ce4 tetrahedra. In the seventh O site, O(7) is bonded to one Ce(1), one Ce(2), one Ce(4), and one Ce(5) atom to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(3)Ce3Dy tetrahedra, corners with two equivalent O(8)Ce3Dy tetrahedra, corners with two equivalent O(6)Ce4 tetrahedra, corners with four equivalent O(4)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the eighth O site, O(8) is bonded to one Dy(1), one Ce(1), one Ce(3), and one Ce(4) atom to form OCe3Dy tetrahedra that share  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(10)Ce3Dy tetrahedra, corners with two equivalent O(2)Ce3Dy tetrahedra, corners with two equivalent O(7)Ce4 tetrahedra, corners with four equivalent O(1)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the ninth O site, O(9) is bonded to one Ce(3), one Ce(5), and two equivalent Ce(4) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra, corners with two equivalent O(5)Ce4 tetrahedra, corners with three equivalent O(3)Ce3Dy tetrahedra, corners with three equivalent O(4)Ce4 tetrahedra, corners with three equivalent O(6)Ce4 tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(7)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the tenth O site, O(10) is bonded to one Dy(1), one Ce(1), one Ce(2), and one Ce(3) atom to form OCe3Dy tetrahedra that share  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(10)Ce3Dy tetrahedra, corners with two equivalent O(2)Ce3Dy tetrahedra, corners with two equivalent O(3)Ce3Dy tetrahedra, corners with two equivalent O(8)Ce3Dy tetrahedra, corners with three equivalent O(5)Ce4 tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(7)Ce4 tetrahedra. is represented by the CIF card [CIF]
data_Ce9DyO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.651
_cell_length_b   7.679
_cell_length_c   8.583
_cell_angle_alpha   102.927
_cell_angle_beta   97.393
_cell_angle_gamma   106.809
_symmetry_Int_Tables_number   1
_cell_volume   400.089
_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
  Ce  Ce0  1  0.801  0.601  0.602  1.0
  Ce  Ce1  1  0.000  0.500  0.000  1.0
  Ce  Ce2  1  0.600  0.199  0.199  1.0
  Ce  Ce3  1  0.800  0.100  0.602  1.0
  Ce  Ce4  1  0.602  0.701  0.199  1.0
  Ce  Ce5  1  0.199  0.399  0.398  1.0
  Ce  Ce6  1  0.398  0.299  0.801  1.0
  Ce  Ce7  1  0.200  0.900  0.398  1.0
  Ce  Ce8  1  0.400  0.801  0.801  1.0
  Dy  Dy9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.850  0.325  0.451  1.0
  O  O11  1  0.648  0.924  0.051  1.0
  O  O12  1  0.950  0.774  0.151  1.0
  O  O13  1  0.851  0.826  0.450  1.0
  O  O14  1  0.449  0.524  0.650  1.0
  O  O15  1  0.649  0.425  0.049  1.0
  O  O16  1  0.749  0.375  0.750  1.0
  O  O17  1  0.252  0.126  0.251  1.0
  O  O18  1  0.449  0.025  0.650  1.0
  O  O19  1  0.950  0.277  0.151  1.0
  O  O20  1  0.551  0.975  0.350  1.0
  O  O21  1  0.050  0.723  0.849  1.0
  O  O22  1  0.251  0.625  0.250  1.0
  O  O23  1  0.748  0.874  0.749  1.0
  O  O24  1  0.351  0.575  0.951  1.0
  O  O25  1  0.050  0.226  0.849  1.0
  O  O26  1  0.551  0.476  0.350  1.0
  O  O27  1  0.149  0.174  0.550  1.0
  O  O28  1  0.352  0.076  0.949  1.0
  O  O29  1  0.150  0.675  0.549  1.0
[/CIF]
.
The crystal structure described by DyCe9O20 is Fluorite-derived structured and crystallizes in the triclinic P-1 space group. Dy(1) is bonded in a body-centered cubic geometry to two equivalent O(10), two equivalent O(2), two equivalent O(3), and two equivalent O(8) atoms. There are five inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a body-centered cubic geometry to one O(10), one O(4), one O(7), one O(8), two equivalent O(1), and two equivalent O(5) atoms. In the second Ce site, Ce(2) is bonded in a body-centered cubic geometry to two equivalent O(10), two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms. In the third Ce site, Ce(3) is bonded in a body-centered cubic geometry to one O(1), one O(10), one O(5), one O(6), one O(8), one O(9), and two equivalent O(2) atoms. In the fourth Ce site, Ce(4) is bonded in a body-centered cubic geometry to one O(1), one O(3), one O(7), one O(8), two equivalent O(4), and two equivalent O(9) atoms. In the fifth Ce site, Ce(5) is bonded in a body-centered cubic geometry to one O(2), one O(3), one O(4), one O(5), one O(7), one O(9), and two equivalent O(6) atoms. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Ce(3), one Ce(4), and two equivalent Ce(1) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(2)Ce3Dy tetrahedra, corners with two equivalent O(4)Ce4 tetrahedra, corners with three equivalent O(5)Ce4 tetrahedra, corners with four equivalent O(8)Ce3Dy tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(7)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the second O site, O(2) is bonded to one Dy(1), one Ce(5), and two equivalent Ce(3) atoms to form OCe3Dy tetrahedra that share  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(10)Ce3Dy tetrahedra, corners with two equivalent O(8)Ce3Dy tetrahedra, corners with two equivalent O(1)Ce4 tetrahedra, corners with two equivalent O(6)Ce4 tetrahedra, corners with three equivalent O(5)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the third O site, O(3) is bonded to one Dy(1), one Ce(2), one Ce(4), and one Ce(5) atom to form OCe3Dy tetrahedra that share  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra, corners with two equivalent O(10)Ce3Dy tetrahedra, corners with two equivalent O(3)Ce3Dy tetrahedra, corners with two equivalent O(6)Ce4 tetrahedra, corners with two equivalent O(7)Ce4 tetrahedra, corners with three equivalent O(9)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(7)Ce4 tetrahedra. In the fourth O site, O(4) is bonded to one Ce(1), one Ce(5), and two equivalent Ce(4) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra, corners with two equivalent O(1)Ce4 tetrahedra, corners with two equivalent O(6)Ce4 tetrahedra, corners with three equivalent O(9)Ce4 tetrahedra, corners with four equivalent O(7)Ce4 tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the fifth O site, O(5) is bonded to one Ce(3), one Ce(5), and two equivalent Ce(1) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra, corners with two equivalent O(9)Ce4 tetrahedra, corners with three equivalent O(10)Ce3Dy tetrahedra, corners with three equivalent O(2)Ce3Dy tetrahedra, corners with three equivalent O(1)Ce4 tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(7)Ce4 tetrahedra. In the sixth O site, O(6) is bonded to one Ce(2), one Ce(3), and two equivalent Ce(5) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra, corners with two equivalent O(2)Ce3Dy tetrahedra, corners with two equivalent O(3)Ce3Dy tetrahedra, corners with two equivalent O(4)Ce4 tetrahedra, corners with two equivalent O(7)Ce4 tetrahedra, corners with three equivalent O(9)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(7)Ce4 tetrahedra. In the seventh O site, O(7) is bonded to one Ce(1), one Ce(2), one Ce(4), and one Ce(5) atom to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(3)Ce3Dy tetrahedra, corners with two equivalent O(8)Ce3Dy tetrahedra, corners with two equivalent O(6)Ce4 tetrahedra, corners with four equivalent O(4)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the eighth O site, O(8) is bonded to one Dy(1), one Ce(1), one Ce(3), and one Ce(4) atom to form OCe3Dy tetrahedra that share  a cornercorner with one O(3)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(5)Ce4 tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(10)Ce3Dy tetrahedra, corners with two equivalent O(2)Ce3Dy tetrahedra, corners with two equivalent O(7)Ce4 tetrahedra, corners with four equivalent O(1)Ce4 tetrahedra,  an edgeedge with one O(10)Ce3Dy tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the ninth O site, O(9) is bonded to one Ce(3), one Ce(5), and two equivalent Ce(4) atoms to form OCe4 tetrahedra that share  a cornercorner with one O(10)Ce3Dy tetrahedra,  a cornercorner with one O(2)Ce3Dy tetrahedra,  a cornercorner with one O(8)Ce3Dy tetrahedra,  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra, corners with two equivalent O(5)Ce4 tetrahedra, corners with three equivalent O(3)Ce3Dy tetrahedra, corners with three equivalent O(4)Ce4 tetrahedra, corners with three equivalent O(6)Ce4 tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(4)Ce4 tetrahedra,  an edgeedge with one O(7)Ce4 tetrahedra, and  an edgeedge with one O(9)Ce4 tetrahedra. In the tenth O site, O(10) is bonded to one Dy(1), one Ce(1), one Ce(2), and one Ce(3) atom to form OCe3Dy tetrahedra that share  a cornercorner with one O(1)Ce4 tetrahedra,  a cornercorner with one O(4)Ce4 tetrahedra,  a cornercorner with one O(6)Ce4 tetrahedra,  a cornercorner with one O(7)Ce4 tetrahedra,  a cornercorner with one O(9)Ce4 tetrahedra, corners with two equivalent O(10)Ce3Dy tetrahedra, corners with two equivalent O(2)Ce3Dy tetrahedra, corners with two equivalent O(3)Ce3Dy tetrahedra, corners with two equivalent O(8)Ce3Dy tetrahedra, corners with three equivalent O(5)Ce4 tetrahedra,  an edgeedge with one O(2)Ce3Dy tetrahedra,  an edgeedge with one O(3)Ce3Dy tetrahedra,  an edgeedge with one O(8)Ce3Dy tetrahedra,  an edgeedge with one O(1)Ce4 tetrahedra,  an edgeedge with one O(6)Ce4 tetrahedra, and  an edgeedge with one O(7)Ce4 tetrahedra. is represented by the CIF card [CIF]
data_Ce9DyO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.651
_cell_length_b   7.679
_cell_length_c   8.583
_cell_angle_alpha   102.927
_cell_angle_beta   97.393
_cell_angle_gamma   106.809
_symmetry_Int_Tables_number   1
_cell_volume   400.089
_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
  Ce  Ce0  1  0.801  0.601  0.602  1.0
  Ce  Ce1  1  0.000  0.500  0.000  1.0
  Ce  Ce2  1  0.600  0.199  0.199  1.0
  Ce  Ce3  1  0.800  0.100  0.602  1.0
  Ce  Ce4  1  0.602  0.701  0.199  1.0
  Ce  Ce5  1  0.199  0.399  0.398  1.0
  Ce  Ce6  1  0.398  0.299  0.801  1.0
  Ce  Ce7  1  0.200  0.900  0.398  1.0
  Ce  Ce8  1  0.400  0.801  0.801  1.0
  Dy  Dy9  1  0.000  0.000  0.000  1.0
  O  O10  1  0.850  0.325  0.451  1.0
  O  O11  1  0.648  0.924  0.051  1.0
  O  O12  1  0.950  0.774  0.151  1.0
  O  O13  1  0.851  0.826  0.450  1.0
  O  O14  1  0.449  0.524  0.650  1.0
  O  O15  1  0.649  0.425  0.049  1.0
  O  O16  1  0.749  0.375  0.750  1.0
  O  O17  1  0.252  0.126  0.251  1.0
  O  O18  1  0.449  0.025  0.650  1.0
  O  O19  1  0.950  0.277  0.151  1.0
  O  O20  1  0.551  0.975  0.350  1.0
  O  O21  1  0.050  0.723  0.849  1.0
  O  O22  1  0.251  0.625  0.250  1.0
  O  O23  1  0.748  0.874  0.749  1.0
  O  O24  1  0.351  0.575  0.951  1.0
  O  O25  1  0.050  0.226  0.849  1.0
  O  O26  1  0.551  0.476  0.350  1.0
  O  O27  1  0.149  0.174  0.550  1.0
  O  O28  1  0.352  0.076  0.949  1.0
  O  O29  1  0.150  0.675  0.549  1.0
[/CIF]
.