The material described by CeHfO4 is Fluorite-derived structured and crystallizes in the orthorhombic Pmn2_1 space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a body-centered cubic geometry to one O(12), one O(5), one O(6), one O(8), two equivalent O(10), and two equivalent O(7) atoms. In the second Ce site, Ce(2) is bonded in a body-centered cubic geometry to one O(12), one O(5), one O(6), one O(8), two equivalent O(1), and two equivalent O(3) 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(11), one O(12), one O(2), one O(3), one O(5), and one O(7) atom. There are three inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a body-centered cubic geometry to one O(1), one O(10), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. In the second Hf site, Hf(2) is bonded in a body-centered cubic geometry to one O(11), one O(2), one O(4), one O(9), two equivalent O(1), and two equivalent O(3) atoms. In the third Hf site, Hf(3) is bonded in a body-centered cubic geometry to one O(11), one O(2), one O(4), one O(9), two equivalent O(10), and two equivalent O(7) atoms. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Ce(2), one Ce(3), one Hf(1), and one Hf(2) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(1)Ce2Hf2 tetrahedra, corners with two equivalent O(10)Ce2Hf2 tetrahedra, corners with two equivalent O(11)Ce2Hf2 tetrahedra, corners with two equivalent O(3)Ce2Hf2 tetrahedra, corners with two equivalent O(7)Ce2Hf2 tetrahedra, corners with two equivalent O(8)Ce2Hf2 tetrahedra, corners with two equivalent O(5)Ce4 tetrahedra, corners with two equivalent O(4)Hf4 tetrahedra,  an edgeedge with one O(2)Ce2Hf2 tetrahedra,  an edgeedge with one O(6)Ce2Hf2 tetrahedra,  an edgeedge with one O(12)Ce4 tetrahedra,  an edgeedge with one O(9)Hf4 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Ce(3), one Hf(2), and one Hf(3) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(12)Ce4 tetrahedra, corners with two equivalent O(9)Hf4 tetrahedra, corners with four equivalent O(10)Ce2Hf2 tetrahedra, corners with four equivalent O(11)Ce2Hf2 tetrahedra, corners with four equivalent O(3)Ce2Hf2 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(4)Hf4 tetrahedra, edges with two equivalent O(1)Ce2Hf2 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. In the third O site, O(3) is bonded to one Ce(2), one Ce(3), one Hf(1), and one Hf(2) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(1)Ce2Hf2 tetrahedra, corners with two equivalent O(10)Ce2Hf2 tetrahedra, corners with two equivalent O(2)Ce2Hf2 tetrahedra, corners with two equivalent O(3)Ce2Hf2 tetrahedra, corners with two equivalent O(6)Ce2Hf2 tetrahedra, corners with two equivalent O(7)Ce2Hf2 tetrahedra, corners with two equivalent O(12)Ce4 tetrahedra, corners with two equivalent O(9)Hf4 tetrahedra,  an edgeedge with one O(11)Ce2Hf2 tetrahedra,  an edgeedge with one O(8)Ce2Hf2 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(4)Hf4 tetrahedra, and edges with two equivalent O(1)Ce2Hf2 tetrahedra. In the fourth O site, O(4) is bonded to one Hf(2), one Hf(3), and two equivalent Hf(1) atoms to form OHf4 tetrahedra that share corners with two equivalent O(11)Ce2Hf2 tetrahedra, corners with two equivalent O(8)Ce2Hf2 tetrahedra, corners with four equivalent O(1)Ce2Hf2 tetrahedra, corners with four equivalent O(7)Ce2Hf2 tetrahedra, corners with four equivalent O(9)Hf4 tetrahedra,  an edgeedge with one O(2)Ce2Hf2 tetrahedra,  an edgeedge with one O(6)Ce2Hf2 tetrahedra, edges with two equivalent O(10)Ce2Hf2 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the fifth O site, O(5) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(3) atoms to form OCe4 tetrahedra that share corners with two equivalent O(11)Ce2Hf2 tetrahedra, corners with two equivalent O(8)Ce2Hf2 tetrahedra, corners with four equivalent O(1)Ce2Hf2 tetrahedra, corners with four equivalent O(7)Ce2Hf2 tetrahedra, corners with four equivalent O(12)Ce4 tetrahedra,  an edgeedge with one O(2)Ce2Hf2 tetrahedra,  an edgeedge with one O(6)Ce2Hf2 tetrahedra, edges with two equivalent O(10)Ce2Hf2 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the sixth O site, O(6) is bonded to one Ce(1), one Ce(2), and two equivalent Hf(1) atoms to form OCe2Hf2 tetrahedra that share corners with two equivalent O(12)Ce4 tetrahedra, corners with two equivalent O(9)Hf4 tetrahedra, corners with four equivalent O(10)Ce2Hf2 tetrahedra, corners with four equivalent O(3)Ce2Hf2 tetrahedra, corners with four equivalent O(8)Ce2Hf2 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(4)Hf4 tetrahedra, edges with two equivalent O(1)Ce2Hf2 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. In the seventh O site, O(7) is bonded to one Ce(1), one Ce(3), one Hf(1), and one Hf(3) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(1)Ce2Hf2 tetrahedra, corners with two equivalent O(10)Ce2Hf2 tetrahedra, corners with two equivalent O(11)Ce2Hf2 tetrahedra, corners with two equivalent O(3)Ce2Hf2 tetrahedra, corners with two equivalent O(7)Ce2Hf2 tetrahedra, corners with two equivalent O(8)Ce2Hf2 tetrahedra, corners with two equivalent O(5)Ce4 tetrahedra, corners with two equivalent O(4)Hf4 tetrahedra,  an edgeedge with one O(2)Ce2Hf2 tetrahedra,  an edgeedge with one O(6)Ce2Hf2 tetrahedra,  an edgeedge with one O(12)Ce4 tetrahedra,  an edgeedge with one O(9)Hf4 tetrahedra, and edges with two equivalent O(10)Ce2Hf2 tetrahedra. In the eighth O site, O(8) is bonded to one Ce(1), one Ce(2), and two equivalent Hf(1) atoms to form OCe2Hf2 tetrahedra that share corners with two equivalent O(5)Ce4 tetrahedra, corners with two equivalent O(4)Hf4 tetrahedra, corners with four equivalent O(1)Ce2Hf2 tetrahedra, corners with four equivalent O(6)Ce2Hf2 tetrahedra, corners with four equivalent O(7)Ce2Hf2 tetrahedra,  an edgeedge with one O(12)Ce4 tetrahedra,  an edgeedge with one O(9)Hf4 tetrahedra, edges with two equivalent O(10)Ce2Hf2 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the ninth O site, O(9) is bonded to one Hf(2), one Hf(3), and two equivalent Hf(1) atoms to form OHf4 tetrahedra that share corners with two equivalent O(2)Ce2Hf2 tetrahedra, corners with two equivalent O(6)Ce2Hf2 tetrahedra, corners with four equivalent O(10)Ce2Hf2 tetrahedra, corners with four equivalent O(3)Ce2Hf2 tetrahedra, corners with four equivalent O(4)Hf4 tetrahedra,  an edgeedge with one O(11)Ce2Hf2 tetrahedra,  an edgeedge with one O(8)Ce2Hf2 tetrahedra, edges with two equivalent O(1)Ce2Hf2 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. In the tenth O site, O(10) is bonded to one Ce(1), one Ce(3), one Hf(1), and one Hf(3) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(1)Ce2Hf2 tetrahedra, corners with two equivalent O(10)Ce2Hf2 tetrahedra, corners with two equivalent O(2)Ce2Hf2 tetrahedra, corners with two equivalent O(3)Ce2Hf2 tetrahedra, corners with two equivalent O(6)Ce2Hf2 tetrahedra, corners with two equivalent O(7)Ce2Hf2 tetrahedra, corners with two equivalent O(12)Ce4 tetrahedra, corners with two equivalent O(9)Hf4 tetrahedra,  an edgeedge with one O(11)Ce2Hf2 tetrahedra,  an edgeedge with one O(8)Ce2Hf2 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(4)Hf4 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. In the eleventh O site, O(11) is bonded to two equivalent Ce(3), one Hf(2), and one Hf(3) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(5)Ce4 tetrahedra, corners with two equivalent O(4)Hf4 tetrahedra, corners with four equivalent O(1)Ce2Hf2 tetrahedra, corners with four equivalent O(2)Ce2Hf2 tetrahedra, corners with four equivalent O(7)Ce2Hf2 tetrahedra,  an edgeedge with one O(12)Ce4 tetrahedra,  an edgeedge with one O(9)Hf4 tetrahedra, edges with two equivalent O(10)Ce2Hf2 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the twelfth O site, O(12) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(3) atoms to form OCe4 tetrahedra that share corners with two equivalent O(2)Ce2Hf2 tetrahedra, corners with two equivalent O(6)Ce2Hf2 tetrahedra, corners with four equivalent O(10)Ce2Hf2 tetrahedra, corners with four equivalent O(3)Ce2Hf2 tetrahedra, corners with four equivalent O(5)Ce4 tetrahedra,  an edgeedge with one O(11)Ce2Hf2 tetrahedra,  an edgeedge with one O(8)Ce2Hf2 tetrahedra, edges with two equivalent O(1)Ce2Hf2 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeHfO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.458
_cell_length_b   7.465
_cell_length_c   7.465
_cell_angle_alpha   60.051
_cell_angle_beta   60.031
_cell_angle_gamma   60.031
_symmetry_Int_Tables_number   1
_cell_volume   294.119
_cell_formula_units_Z   4
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  0.126  0.374  0.374  1.0
  Ce  Ce1  1  0.126  0.874  0.374  1.0
  Ce  Ce2  1  0.626  0.874  0.374  1.0
  Ce  Ce3  1  0.126  0.874  0.874  1.0
  Hf  Hf4  1  0.625  0.372  0.872  1.0
  Hf  Hf5  1  0.628  0.868  0.876  1.0
  Hf  Hf6  1  0.628  0.376  0.368  1.0
  Hf  Hf7  1  0.131  0.372  0.872  1.0
  O  O8  1  0.514  0.736  0.759  1.0
  O  O9  1  0.737  0.013  0.513  1.0
  O  O10  1  0.742  0.486  0.508  1.0
  O  O11  1  0.495  0.255  0.755  1.0
  O  O12  1  1.000  0.750  0.250  1.0
  O  O13  1  0.260  0.490  0.990  1.0
  O  O14  1  0.264  0.008  0.986  1.0
  O  O15  1  0.988  0.262  0.762  1.0
  O  O16  1  0.514  0.259  0.236  1.0
  O  O17  1  0.749  0.501  0.001  1.0
  O  O18  1  0.742  0.008  0.986  1.0
  O  O19  1  0.511  0.739  0.239  1.0
  O  O20  1  0.251  0.999  0.499  1.0
  O  O21  1  0.264  0.486  0.508  1.0
  O  O22  1  0.992  0.736  0.759  1.0
  O  O23  1  0.992  0.259  0.236  1.0
[/CIF]
.
The material described by CeHfO4 is Fluorite-derived structured and crystallizes in the orthorhombic Pmn2_1 space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a body-centered cubic geometry to one O(12), one O(5), one O(6), one O(8), two equivalent O(10), and two equivalent O(7) atoms. In the second Ce site, Ce(2) is bonded in a body-centered cubic geometry to one O(12), one O(5), one O(6), one O(8), two equivalent O(1), and two equivalent O(3) 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(11), one O(12), one O(2), one O(3), one O(5), and one O(7) atom. There are three inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a body-centered cubic geometry to one O(1), one O(10), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. In the second Hf site, Hf(2) is bonded in a body-centered cubic geometry to one O(11), one O(2), one O(4), one O(9), two equivalent O(1), and two equivalent O(3) atoms. In the third Hf site, Hf(3) is bonded in a body-centered cubic geometry to one O(11), one O(2), one O(4), one O(9), two equivalent O(10), and two equivalent O(7) atoms. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Ce(2), one Ce(3), one Hf(1), and one Hf(2) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(1)Ce2Hf2 tetrahedra, corners with two equivalent O(10)Ce2Hf2 tetrahedra, corners with two equivalent O(11)Ce2Hf2 tetrahedra, corners with two equivalent O(3)Ce2Hf2 tetrahedra, corners with two equivalent O(7)Ce2Hf2 tetrahedra, corners with two equivalent O(8)Ce2Hf2 tetrahedra, corners with two equivalent O(5)Ce4 tetrahedra, corners with two equivalent O(4)Hf4 tetrahedra,  an edgeedge with one O(2)Ce2Hf2 tetrahedra,  an edgeedge with one O(6)Ce2Hf2 tetrahedra,  an edgeedge with one O(12)Ce4 tetrahedra,  an edgeedge with one O(9)Hf4 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Ce(3), one Hf(2), and one Hf(3) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(12)Ce4 tetrahedra, corners with two equivalent O(9)Hf4 tetrahedra, corners with four equivalent O(10)Ce2Hf2 tetrahedra, corners with four equivalent O(11)Ce2Hf2 tetrahedra, corners with four equivalent O(3)Ce2Hf2 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(4)Hf4 tetrahedra, edges with two equivalent O(1)Ce2Hf2 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. In the third O site, O(3) is bonded to one Ce(2), one Ce(3), one Hf(1), and one Hf(2) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(1)Ce2Hf2 tetrahedra, corners with two equivalent O(10)Ce2Hf2 tetrahedra, corners with two equivalent O(2)Ce2Hf2 tetrahedra, corners with two equivalent O(3)Ce2Hf2 tetrahedra, corners with two equivalent O(6)Ce2Hf2 tetrahedra, corners with two equivalent O(7)Ce2Hf2 tetrahedra, corners with two equivalent O(12)Ce4 tetrahedra, corners with two equivalent O(9)Hf4 tetrahedra,  an edgeedge with one O(11)Ce2Hf2 tetrahedra,  an edgeedge with one O(8)Ce2Hf2 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(4)Hf4 tetrahedra, and edges with two equivalent O(1)Ce2Hf2 tetrahedra. In the fourth O site, O(4) is bonded to one Hf(2), one Hf(3), and two equivalent Hf(1) atoms to form OHf4 tetrahedra that share corners with two equivalent O(11)Ce2Hf2 tetrahedra, corners with two equivalent O(8)Ce2Hf2 tetrahedra, corners with four equivalent O(1)Ce2Hf2 tetrahedra, corners with four equivalent O(7)Ce2Hf2 tetrahedra, corners with four equivalent O(9)Hf4 tetrahedra,  an edgeedge with one O(2)Ce2Hf2 tetrahedra,  an edgeedge with one O(6)Ce2Hf2 tetrahedra, edges with two equivalent O(10)Ce2Hf2 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the fifth O site, O(5) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(3) atoms to form OCe4 tetrahedra that share corners with two equivalent O(11)Ce2Hf2 tetrahedra, corners with two equivalent O(8)Ce2Hf2 tetrahedra, corners with four equivalent O(1)Ce2Hf2 tetrahedra, corners with four equivalent O(7)Ce2Hf2 tetrahedra, corners with four equivalent O(12)Ce4 tetrahedra,  an edgeedge with one O(2)Ce2Hf2 tetrahedra,  an edgeedge with one O(6)Ce2Hf2 tetrahedra, edges with two equivalent O(10)Ce2Hf2 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the sixth O site, O(6) is bonded to one Ce(1), one Ce(2), and two equivalent Hf(1) atoms to form OCe2Hf2 tetrahedra that share corners with two equivalent O(12)Ce4 tetrahedra, corners with two equivalent O(9)Hf4 tetrahedra, corners with four equivalent O(10)Ce2Hf2 tetrahedra, corners with four equivalent O(3)Ce2Hf2 tetrahedra, corners with four equivalent O(8)Ce2Hf2 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(4)Hf4 tetrahedra, edges with two equivalent O(1)Ce2Hf2 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. In the seventh O site, O(7) is bonded to one Ce(1), one Ce(3), one Hf(1), and one Hf(3) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(1)Ce2Hf2 tetrahedra, corners with two equivalent O(10)Ce2Hf2 tetrahedra, corners with two equivalent O(11)Ce2Hf2 tetrahedra, corners with two equivalent O(3)Ce2Hf2 tetrahedra, corners with two equivalent O(7)Ce2Hf2 tetrahedra, corners with two equivalent O(8)Ce2Hf2 tetrahedra, corners with two equivalent O(5)Ce4 tetrahedra, corners with two equivalent O(4)Hf4 tetrahedra,  an edgeedge with one O(2)Ce2Hf2 tetrahedra,  an edgeedge with one O(6)Ce2Hf2 tetrahedra,  an edgeedge with one O(12)Ce4 tetrahedra,  an edgeedge with one O(9)Hf4 tetrahedra, and edges with two equivalent O(10)Ce2Hf2 tetrahedra. In the eighth O site, O(8) is bonded to one Ce(1), one Ce(2), and two equivalent Hf(1) atoms to form OCe2Hf2 tetrahedra that share corners with two equivalent O(5)Ce4 tetrahedra, corners with two equivalent O(4)Hf4 tetrahedra, corners with four equivalent O(1)Ce2Hf2 tetrahedra, corners with four equivalent O(6)Ce2Hf2 tetrahedra, corners with four equivalent O(7)Ce2Hf2 tetrahedra,  an edgeedge with one O(12)Ce4 tetrahedra,  an edgeedge with one O(9)Hf4 tetrahedra, edges with two equivalent O(10)Ce2Hf2 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the ninth O site, O(9) is bonded to one Hf(2), one Hf(3), and two equivalent Hf(1) atoms to form OHf4 tetrahedra that share corners with two equivalent O(2)Ce2Hf2 tetrahedra, corners with two equivalent O(6)Ce2Hf2 tetrahedra, corners with four equivalent O(10)Ce2Hf2 tetrahedra, corners with four equivalent O(3)Ce2Hf2 tetrahedra, corners with four equivalent O(4)Hf4 tetrahedra,  an edgeedge with one O(11)Ce2Hf2 tetrahedra,  an edgeedge with one O(8)Ce2Hf2 tetrahedra, edges with two equivalent O(1)Ce2Hf2 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. In the tenth O site, O(10) is bonded to one Ce(1), one Ce(3), one Hf(1), and one Hf(3) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(1)Ce2Hf2 tetrahedra, corners with two equivalent O(10)Ce2Hf2 tetrahedra, corners with two equivalent O(2)Ce2Hf2 tetrahedra, corners with two equivalent O(3)Ce2Hf2 tetrahedra, corners with two equivalent O(6)Ce2Hf2 tetrahedra, corners with two equivalent O(7)Ce2Hf2 tetrahedra, corners with two equivalent O(12)Ce4 tetrahedra, corners with two equivalent O(9)Hf4 tetrahedra,  an edgeedge with one O(11)Ce2Hf2 tetrahedra,  an edgeedge with one O(8)Ce2Hf2 tetrahedra,  an edgeedge with one O(5)Ce4 tetrahedra,  an edgeedge with one O(4)Hf4 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. In the eleventh O site, O(11) is bonded to two equivalent Ce(3), one Hf(2), and one Hf(3) atom to form OCe2Hf2 tetrahedra that share corners with two equivalent O(5)Ce4 tetrahedra, corners with two equivalent O(4)Hf4 tetrahedra, corners with four equivalent O(1)Ce2Hf2 tetrahedra, corners with four equivalent O(2)Ce2Hf2 tetrahedra, corners with four equivalent O(7)Ce2Hf2 tetrahedra,  an edgeedge with one O(12)Ce4 tetrahedra,  an edgeedge with one O(9)Hf4 tetrahedra, edges with two equivalent O(10)Ce2Hf2 tetrahedra, and edges with two equivalent O(3)Ce2Hf2 tetrahedra. In the twelfth O site, O(12) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(3) atoms to form OCe4 tetrahedra that share corners with two equivalent O(2)Ce2Hf2 tetrahedra, corners with two equivalent O(6)Ce2Hf2 tetrahedra, corners with four equivalent O(10)Ce2Hf2 tetrahedra, corners with four equivalent O(3)Ce2Hf2 tetrahedra, corners with four equivalent O(5)Ce4 tetrahedra,  an edgeedge with one O(11)Ce2Hf2 tetrahedra,  an edgeedge with one O(8)Ce2Hf2 tetrahedra, edges with two equivalent O(1)Ce2Hf2 tetrahedra, and edges with two equivalent O(7)Ce2Hf2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeHfO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.458
_cell_length_b   7.465
_cell_length_c   7.465
_cell_angle_alpha   60.051
_cell_angle_beta   60.031
_cell_angle_gamma   60.031
_symmetry_Int_Tables_number   1
_cell_volume   294.119
_cell_formula_units_Z   4
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  0.126  0.374  0.374  1.0
  Ce  Ce1  1  0.126  0.874  0.374  1.0
  Ce  Ce2  1  0.626  0.874  0.374  1.0
  Ce  Ce3  1  0.126  0.874  0.874  1.0
  Hf  Hf4  1  0.625  0.372  0.872  1.0
  Hf  Hf5  1  0.628  0.868  0.876  1.0
  Hf  Hf6  1  0.628  0.376  0.368  1.0
  Hf  Hf7  1  0.131  0.372  0.872  1.0
  O  O8  1  0.514  0.736  0.759  1.0
  O  O9  1  0.737  0.013  0.513  1.0
  O  O10  1  0.742  0.486  0.508  1.0
  O  O11  1  0.495  0.255  0.755  1.0
  O  O12  1  1.000  0.750  0.250  1.0
  O  O13  1  0.260  0.490  0.990  1.0
  O  O14  1  0.264  0.008  0.986  1.0
  O  O15  1  0.988  0.262  0.762  1.0
  O  O16  1  0.514  0.259  0.236  1.0
  O  O17  1  0.749  0.501  0.001  1.0
  O  O18  1  0.742  0.008  0.986  1.0
  O  O19  1  0.511  0.739  0.239  1.0
  O  O20  1  0.251  0.999  0.499  1.0
  O  O21  1  0.264  0.486  0.508  1.0
  O  O22  1  0.992  0.736  0.759  1.0
  O  O23  1  0.992  0.259  0.236  1.0
[/CIF]
.