The structure described by MgHf8(N2O)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one N(3), one N(5), one N(7), one N(8), one O(3), and one O(4) atom to form MgN4O2 octahedra that share corners with three equivalent Hf(5)N4O2 octahedra, corners with three equivalent Hf(7)N4O2 octahedra, edges with three equivalent Hf(8)N4O2 octahedra,  a faceface with one Hf(3)N4O2 octahedra, and  a faceface with one Hf(4)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 38-45°. There are eight inequivalent Hf sites. In the first Hf site, Hf(1) is bonded to one N(1), one N(2), one N(4), one N(6), one O(1), and one O(2) atom to form a mixture of distorted corner and face-sharing HfN4O2 octahedra. The corner-sharing octahedral tilt angles range from 43-62°. In the second Hf site, Hf(2) is bonded in a 6-coordinate geometry to one N(3), one N(5), one N(7), one N(8), one O(3), and one O(4) atom. In the third Hf site, Hf(3) is bonded to one N(2), one N(5), one N(6), one N(8), one O(1), and one O(3) atom to form distorted HfN4O2 octahedra that share corners with three equivalent Hf(8)N4O2 octahedra, edges with three equivalent Hf(7)N4O2 octahedra,  a faceface with one Mg(1)N4O2 octahedra, and  a faceface with one Hf(1)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 35-43°. In the fourth Hf site, Hf(4) is bonded to one N(1), one N(3), one N(4), one N(7), one O(2), and one O(4) atom to form HfN4O2 octahedra that share corners with three equivalent Hf(1)N4O2 octahedra, corners with three equivalent Hf(8)N4O2 octahedra, edges with three equivalent Hf(5)N4O2 octahedra, and  a faceface with one Mg(1)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 48-65°. In the fifth Hf site, Hf(5) is bonded to one N(1), one N(3), one N(4), one N(7), one O(2), and one O(4) atom to form distorted HfN4O2 octahedra that share corners with three equivalent Mg(1)N4O2 octahedra, corners with three equivalent Hf(1)N4O2 octahedra, corners with three equivalent Hf(8)N4O2 octahedra, and edges with three equivalent Hf(4)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 38-62°. In the sixth Hf site, Hf(6) is bonded in a 6-coordinate geometry to one N(1), one N(2), one N(4), one N(6), one O(1), and one O(2) atom. In the seventh Hf site, Hf(7) is bonded to one N(2), one N(5), one N(6), one N(8), one O(1), and one O(3) atom to form distorted HfN4O2 octahedra that share corners with three equivalent Mg(1)N4O2 octahedra, corners with three equivalent Hf(1)N4O2 octahedra, edges with three equivalent Hf(3)N4O2 octahedra, and  a faceface with one Hf(8)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 38-46°. In the eighth Hf site, Hf(8) is bonded to one N(3), one N(5), one N(7), one N(8), one O(3), and one O(4) atom to form distorted HfN4O2 octahedra that share corners with three equivalent Hf(3)N4O2 octahedra, corners with three equivalent Hf(4)N4O2 octahedra, corners with three equivalent Hf(5)N4O2 octahedra, edges with three equivalent Mg(1)N4O2 octahedra, and  a faceface with one Hf(7)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 35-65°. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a distorted see-saw-like geometry to one Hf(1), one Hf(4), one Hf(5), and one Hf(6) atom. In the second N site, N(2) is bonded in a rectangular see-saw-like geometry to one Hf(1), one Hf(3), one Hf(6), and one Hf(7) atom. In the third N site, N(3) is bonded to one Mg(1), one Hf(2), one Hf(4), one Hf(5), and one Hf(8) atom to form distorted NHf4Mg trigonal bipyramids that share  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid,  an edgeedge with one N(5)Hf4Mg trigonal bipyramid,  an edgeedge with one N(8)Hf4Mg trigonal bipyramid,  an edgeedge with one O(3)Hf4Mg trigonal bipyramid, edges with two equivalent N(7)Hf4Mg trigonal bipyramids, edges with two equivalent O(4)Hf4Mg trigonal bipyramids, and  an edgeedge with one N(4)Hf4 trigonal pyramid. In the fourth N site, N(4) is bonded to one Hf(1), one Hf(4), one Hf(5), and one Hf(6) atom to form distorted NHf4 trigonal pyramids that share corners with two equivalent N(7)Hf4Mg trigonal bipyramids, corners with two equivalent O(4)Hf4Mg trigonal bipyramids,  an edgeedge with one N(3)Hf4Mg trigonal bipyramid, and  an edgeedge with one O(1)Hf4 trigonal pyramid. In the fifth N site, N(5) is bonded to one Mg(1), one Hf(2), one Hf(3), one Hf(7), and one Hf(8) atom to form distorted NHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid, corners with two equivalent O(1)Hf4 trigonal pyramids,  an edgeedge with one N(3)Hf4Mg trigonal bipyramid,  an edgeedge with one N(7)Hf4Mg trigonal bipyramid,  an edgeedge with one O(4)Hf4Mg trigonal bipyramid, edges with two equivalent N(8)Hf4Mg trigonal bipyramids, and edges with two equivalent O(3)Hf4Mg trigonal bipyramids. In the sixth N site, N(6) is bonded in a distorted see-saw-like geometry to one Hf(1), one Hf(3), one Hf(6), and one Hf(7) atom. In the seventh N site, N(7) is bonded to one Mg(1), one Hf(2), one Hf(4), one Hf(5), and one Hf(8) atom to form distorted NHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid, corners with two equivalent N(4)Hf4 trigonal pyramids,  an edgeedge with one N(5)Hf4Mg trigonal bipyramid,  an edgeedge with one N(8)Hf4Mg trigonal bipyramid,  an edgeedge with one O(3)Hf4Mg trigonal bipyramid, edges with two equivalent N(3)Hf4Mg trigonal bipyramids, and edges with two equivalent O(4)Hf4Mg trigonal bipyramids. In the eighth N site, N(8) is bonded to one Mg(1), one Hf(2), one Hf(3), one Hf(7), and one Hf(8) atom to form distorted NHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid,  an edgeedge with one N(3)Hf4Mg trigonal bipyramid,  an edgeedge with one N(7)Hf4Mg trigonal bipyramid,  an edgeedge with one O(4)Hf4Mg trigonal bipyramid, edges with two equivalent N(5)Hf4Mg trigonal bipyramids, edges with two equivalent O(3)Hf4Mg trigonal bipyramids, and  an edgeedge with one O(1)Hf4 trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Hf(1), one Hf(3), one Hf(6), and one Hf(7) atom to form distorted OHf4 trigonal pyramids that share corners with two equivalent N(5)Hf4Mg trigonal bipyramids, corners with two equivalent O(3)Hf4Mg trigonal bipyramids,  an edgeedge with one N(8)Hf4Mg trigonal bipyramid, and  an edgeedge with one N(4)Hf4 trigonal pyramid. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(4), one Hf(5), and one Hf(6) atom. In the third O site, O(3) is bonded to one Mg(1), one Hf(2), one Hf(3), one Hf(7), and one Hf(8) atom to form distorted OHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid, corners with two equivalent O(1)Hf4 trigonal pyramids,  an edgeedge with one N(3)Hf4Mg trigonal bipyramid,  an edgeedge with one N(7)Hf4Mg trigonal bipyramid,  an edgeedge with one O(4)Hf4Mg trigonal bipyramid, edges with two equivalent N(5)Hf4Mg trigonal bipyramids, and edges with two equivalent N(8)Hf4Mg trigonal bipyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Hf(2), one Hf(4), one Hf(5), and one Hf(8) atom to form distorted OHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid, corners with two equivalent N(4)Hf4 trigonal pyramids,  an edgeedge with one N(5)Hf4Mg trigonal bipyramid,  an edgeedge with one N(8)Hf4Mg trigonal bipyramid,  an edgeedge with one O(3)Hf4Mg trigonal bipyramid, edges with two equivalent N(3)Hf4Mg trigonal bipyramids, and edges with two equivalent N(7)Hf4Mg trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Hf8Mg(N2O)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.466
_cell_length_b   5.457
_cell_length_c   10.763
_cell_angle_alpha   90.618
_cell_angle_beta   74.955
_cell_angle_gamma   59.514
_symmetry_Int_Tables_number   1
_cell_volume   263.218
_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
  Hf  Hf0  1  0.139  0.432  0.290  1.0
  Hf  Hf1  1  0.124  0.905  0.789  1.0
  Hf  Hf2  1  0.344  0.352  0.005  1.0
  Hf  Hf3  1  0.658  0.190  0.497  1.0
  Hf  Hf4  1  0.350  0.842  0.475  1.0
  Hf  Hf5  1  0.842  0.082  0.212  1.0
  Hf  Hf6  1  0.656  0.682  0.026  1.0
  Hf  Hf7  1  0.852  0.554  0.713  1.0
  Mg  Mg8  1  0.501  0.232  0.751  1.0
  N  N9  1  0.457  0.112  0.369  1.0
  N  N10  1  0.554  0.387  0.128  1.0
  N  N11  1  0.266  0.547  0.637  1.0
  N  N12  1  0.748  0.436  0.374  1.0
  N  N13  1  0.456  0.596  0.870  1.0
  N  N14  1  0.929  0.681  0.131  1.0
  N  N15  1  0.935  0.158  0.631  1.0
  N  N16  1  0.724  0.933  0.873  1.0
  O  O17  1  0.257  0.067  0.131  1.0
  O  O18  1  0.074  0.815  0.375  1.0
  O  O19  1  0.078  0.304  0.865  1.0
  O  O20  1  0.564  0.880  0.627  1.0
[/CIF]
.
The structure described by MgHf8(N2O)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one N(3), one N(5), one N(7), one N(8), one O(3), and one O(4) atom to form MgN4O2 octahedra that share corners with three equivalent Hf(5)N4O2 octahedra, corners with three equivalent Hf(7)N4O2 octahedra, edges with three equivalent Hf(8)N4O2 octahedra,  a faceface with one Hf(3)N4O2 octahedra, and  a faceface with one Hf(4)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 38-45°. There are eight inequivalent Hf sites. In the first Hf site, Hf(1) is bonded to one N(1), one N(2), one N(4), one N(6), one O(1), and one O(2) atom to form a mixture of distorted corner and face-sharing HfN4O2 octahedra. The corner-sharing octahedral tilt angles range from 43-62°. In the second Hf site, Hf(2) is bonded in a 6-coordinate geometry to one N(3), one N(5), one N(7), one N(8), one O(3), and one O(4) atom. In the third Hf site, Hf(3) is bonded to one N(2), one N(5), one N(6), one N(8), one O(1), and one O(3) atom to form distorted HfN4O2 octahedra that share corners with three equivalent Hf(8)N4O2 octahedra, edges with three equivalent Hf(7)N4O2 octahedra,  a faceface with one Mg(1)N4O2 octahedra, and  a faceface with one Hf(1)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 35-43°. In the fourth Hf site, Hf(4) is bonded to one N(1), one N(3), one N(4), one N(7), one O(2), and one O(4) atom to form HfN4O2 octahedra that share corners with three equivalent Hf(1)N4O2 octahedra, corners with three equivalent Hf(8)N4O2 octahedra, edges with three equivalent Hf(5)N4O2 octahedra, and  a faceface with one Mg(1)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 48-65°. In the fifth Hf site, Hf(5) is bonded to one N(1), one N(3), one N(4), one N(7), one O(2), and one O(4) atom to form distorted HfN4O2 octahedra that share corners with three equivalent Mg(1)N4O2 octahedra, corners with three equivalent Hf(1)N4O2 octahedra, corners with three equivalent Hf(8)N4O2 octahedra, and edges with three equivalent Hf(4)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 38-62°. In the sixth Hf site, Hf(6) is bonded in a 6-coordinate geometry to one N(1), one N(2), one N(4), one N(6), one O(1), and one O(2) atom. In the seventh Hf site, Hf(7) is bonded to one N(2), one N(5), one N(6), one N(8), one O(1), and one O(3) atom to form distorted HfN4O2 octahedra that share corners with three equivalent Mg(1)N4O2 octahedra, corners with three equivalent Hf(1)N4O2 octahedra, edges with three equivalent Hf(3)N4O2 octahedra, and  a faceface with one Hf(8)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 38-46°. In the eighth Hf site, Hf(8) is bonded to one N(3), one N(5), one N(7), one N(8), one O(3), and one O(4) atom to form distorted HfN4O2 octahedra that share corners with three equivalent Hf(3)N4O2 octahedra, corners with three equivalent Hf(4)N4O2 octahedra, corners with three equivalent Hf(5)N4O2 octahedra, edges with three equivalent Mg(1)N4O2 octahedra, and  a faceface with one Hf(7)N4O2 octahedra. The corner-sharing octahedral tilt angles range from 35-65°. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a distorted see-saw-like geometry to one Hf(1), one Hf(4), one Hf(5), and one Hf(6) atom. In the second N site, N(2) is bonded in a rectangular see-saw-like geometry to one Hf(1), one Hf(3), one Hf(6), and one Hf(7) atom. In the third N site, N(3) is bonded to one Mg(1), one Hf(2), one Hf(4), one Hf(5), and one Hf(8) atom to form distorted NHf4Mg trigonal bipyramids that share  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid,  an edgeedge with one N(5)Hf4Mg trigonal bipyramid,  an edgeedge with one N(8)Hf4Mg trigonal bipyramid,  an edgeedge with one O(3)Hf4Mg trigonal bipyramid, edges with two equivalent N(7)Hf4Mg trigonal bipyramids, edges with two equivalent O(4)Hf4Mg trigonal bipyramids, and  an edgeedge with one N(4)Hf4 trigonal pyramid. In the fourth N site, N(4) is bonded to one Hf(1), one Hf(4), one Hf(5), and one Hf(6) atom to form distorted NHf4 trigonal pyramids that share corners with two equivalent N(7)Hf4Mg trigonal bipyramids, corners with two equivalent O(4)Hf4Mg trigonal bipyramids,  an edgeedge with one N(3)Hf4Mg trigonal bipyramid, and  an edgeedge with one O(1)Hf4 trigonal pyramid. In the fifth N site, N(5) is bonded to one Mg(1), one Hf(2), one Hf(3), one Hf(7), and one Hf(8) atom to form distorted NHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid, corners with two equivalent O(1)Hf4 trigonal pyramids,  an edgeedge with one N(3)Hf4Mg trigonal bipyramid,  an edgeedge with one N(7)Hf4Mg trigonal bipyramid,  an edgeedge with one O(4)Hf4Mg trigonal bipyramid, edges with two equivalent N(8)Hf4Mg trigonal bipyramids, and edges with two equivalent O(3)Hf4Mg trigonal bipyramids. In the sixth N site, N(6) is bonded in a distorted see-saw-like geometry to one Hf(1), one Hf(3), one Hf(6), and one Hf(7) atom. In the seventh N site, N(7) is bonded to one Mg(1), one Hf(2), one Hf(4), one Hf(5), and one Hf(8) atom to form distorted NHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid, corners with two equivalent N(4)Hf4 trigonal pyramids,  an edgeedge with one N(5)Hf4Mg trigonal bipyramid,  an edgeedge with one N(8)Hf4Mg trigonal bipyramid,  an edgeedge with one O(3)Hf4Mg trigonal bipyramid, edges with two equivalent N(3)Hf4Mg trigonal bipyramids, and edges with two equivalent O(4)Hf4Mg trigonal bipyramids. In the eighth N site, N(8) is bonded to one Mg(1), one Hf(2), one Hf(3), one Hf(7), and one Hf(8) atom to form distorted NHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid,  an edgeedge with one N(3)Hf4Mg trigonal bipyramid,  an edgeedge with one N(7)Hf4Mg trigonal bipyramid,  an edgeedge with one O(4)Hf4Mg trigonal bipyramid, edges with two equivalent N(5)Hf4Mg trigonal bipyramids, edges with two equivalent O(3)Hf4Mg trigonal bipyramids, and  an edgeedge with one O(1)Hf4 trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Hf(1), one Hf(3), one Hf(6), and one Hf(7) atom to form distorted OHf4 trigonal pyramids that share corners with two equivalent N(5)Hf4Mg trigonal bipyramids, corners with two equivalent O(3)Hf4Mg trigonal bipyramids,  an edgeedge with one N(8)Hf4Mg trigonal bipyramid, and  an edgeedge with one N(4)Hf4 trigonal pyramid. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Hf(1), one Hf(4), one Hf(5), and one Hf(6) atom. In the third O site, O(3) is bonded to one Mg(1), one Hf(2), one Hf(3), one Hf(7), and one Hf(8) atom to form distorted OHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(4)Hf4Mg trigonal bipyramid, corners with two equivalent O(1)Hf4 trigonal pyramids,  an edgeedge with one N(3)Hf4Mg trigonal bipyramid,  an edgeedge with one N(7)Hf4Mg trigonal bipyramid,  an edgeedge with one O(4)Hf4Mg trigonal bipyramid, edges with two equivalent N(5)Hf4Mg trigonal bipyramids, and edges with two equivalent N(8)Hf4Mg trigonal bipyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Hf(2), one Hf(4), one Hf(5), and one Hf(8) atom to form distorted OHf4Mg trigonal bipyramids that share  a cornercorner with one N(3)Hf4Mg trigonal bipyramid,  a cornercorner with one N(5)Hf4Mg trigonal bipyramid,  a cornercorner with one N(7)Hf4Mg trigonal bipyramid,  a cornercorner with one N(8)Hf4Mg trigonal bipyramid,  a cornercorner with one O(3)Hf4Mg trigonal bipyramid, corners with two equivalent N(4)Hf4 trigonal pyramids,  an edgeedge with one N(5)Hf4Mg trigonal bipyramid,  an edgeedge with one N(8)Hf4Mg trigonal bipyramid,  an edgeedge with one O(3)Hf4Mg trigonal bipyramid, edges with two equivalent N(3)Hf4Mg trigonal bipyramids, and edges with two equivalent N(7)Hf4Mg trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Hf8Mg(N2O)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.466
_cell_length_b   5.457
_cell_length_c   10.763
_cell_angle_alpha   90.618
_cell_angle_beta   74.955
_cell_angle_gamma   59.514
_symmetry_Int_Tables_number   1
_cell_volume   263.218
_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
  Hf  Hf0  1  0.139  0.432  0.290  1.0
  Hf  Hf1  1  0.124  0.905  0.789  1.0
  Hf  Hf2  1  0.344  0.352  0.005  1.0
  Hf  Hf3  1  0.658  0.190  0.497  1.0
  Hf  Hf4  1  0.350  0.842  0.475  1.0
  Hf  Hf5  1  0.842  0.082  0.212  1.0
  Hf  Hf6  1  0.656  0.682  0.026  1.0
  Hf  Hf7  1  0.852  0.554  0.713  1.0
  Mg  Mg8  1  0.501  0.232  0.751  1.0
  N  N9  1  0.457  0.112  0.369  1.0
  N  N10  1  0.554  0.387  0.128  1.0
  N  N11  1  0.266  0.547  0.637  1.0
  N  N12  1  0.748  0.436  0.374  1.0
  N  N13  1  0.456  0.596  0.870  1.0
  N  N14  1  0.929  0.681  0.131  1.0
  N  N15  1  0.935  0.158  0.631  1.0
  N  N16  1  0.724  0.933  0.873  1.0
  O  O17  1  0.257  0.067  0.131  1.0
  O  O18  1  0.074  0.815  0.375  1.0
  O  O19  1  0.078  0.304  0.865  1.0
  O  O20  1  0.564  0.880  0.627  1.0
[/CIF]
.