The crystal structure described by EuHfCrSnO6 crystallizes in the orthorhombic P222 space group. There are four inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form EuO12 cuboctahedra that share faces with four equivalent Hf(1)O6 octahedra and faces with four equivalent Cr(1)O6 octahedra. In the second Eu site, Eu(2) is bonded to four equivalent O(4), four equivalent O(5), and four equivalent O(6) atoms to form EuO12 cuboctahedra that share faces with four equivalent Hf(1)O6 octahedra and faces with four equivalent Cr(1)O6 octahedra. In the third Eu site, Eu(3) is bonded in a distorted body-centered cubic geometry to four equivalent O(1) and four equivalent O(5) atoms. In the fourth Eu site, Eu(4) is bonded in a distorted square co-planar geometry to four equivalent O(3) and four equivalent O(4) atoms. Hf(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form HfO6 octahedra that share corners with six equivalent Cr(1)O6 octahedra,  a faceface with one Eu(1)O12 cuboctahedra, and  a faceface with one Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-27°. Cr(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form CrO6 octahedra that share corners with six equivalent Hf(1)O6 octahedra,  a faceface with one Eu(1)O12 cuboctahedra, and  a faceface with one Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-27°. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a square co-planar geometry to four equivalent O(6) atoms. In the second Sn site, Sn(2) is bonded in a square co-planar geometry to four equivalent O(2) atoms. In the third Sn site, Sn(3) is bonded in a square co-planar geometry to four equivalent O(3) atoms. In the fourth Sn site, Sn(4) is bonded in a square co-planar geometry to four equivalent O(1) atoms. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 4-coordinate geometry to one Eu(2), one Eu(3), one Hf(1), and one Cr(1) atom. In the second O site, O(6) is bonded in a 4-coordinate geometry to one Eu(2), one Hf(1), one Cr(1), and one Sn(1) atom. In the third O site, O(1) is bonded in a 5-coordinate geometry to one Eu(1), one Eu(3), one Hf(1), one Cr(1), and one Sn(4) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Eu(1), one Hf(1), one Cr(1), and one Sn(2) atom. In the fifth O site, O(3) is bonded in a 5-coordinate geometry to one Eu(1), one Eu(4), one Hf(1), one Cr(1), and one Sn(3) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Eu(2), one Eu(4), one Hf(1), and one Cr(1) atom. is represented by the CIF file [CIF]
data_EuHfCrSnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.782
_cell_length_b   8.656
_cell_length_c   8.675
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   659.456
_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
  Eu  Eu0  1  0.000  0.000  0.000  1.0
  Eu  Eu1  1  0.500  0.500  0.500  1.0
  Eu  Eu2  1  0.000  0.500  0.500  1.0
  Eu  Eu3  1  0.500  0.500  0.000  1.0
  Hf  Hf4  1  0.259  0.249  0.244  1.0
  Hf  Hf5  1  0.741  0.751  0.244  1.0
  Hf  Hf6  1  0.741  0.249  0.756  1.0
  Hf  Hf7  1  0.259  0.751  0.756  1.0
  Cr  Cr8  1  0.748  0.755  0.749  1.0
  Cr  Cr9  1  0.252  0.245  0.749  1.0
  Cr  Cr10  1  0.252  0.755  0.251  1.0
  Cr  Cr11  1  0.748  0.245  0.251  1.0
  Sn  Sn12  1  0.500  0.000  0.500  1.0
  Sn  Sn13  1  0.500  0.000  0.000  1.0
  Sn  Sn14  1  0.000  0.500  0.000  1.0
  Sn  Sn15  1  0.000  0.000  0.500  1.0
  O  O16  1  0.007  0.206  0.287  1.0
  O  O17  1  0.993  0.794  0.287  1.0
  O  O18  1  0.993  0.206  0.713  1.0
  O  O19  1  0.007  0.794  0.713  1.0
  O  O20  1  0.281  0.006  0.202  1.0
  O  O21  1  0.281  0.994  0.798  1.0
  O  O22  1  0.719  0.994  0.202  1.0
  O  O23  1  0.719  0.006  0.798  1.0
  O  O24  1  0.210  0.284  0.010  1.0
  O  O25  1  0.790  0.284  0.990  1.0
  O  O26  1  0.210  0.716  0.990  1.0
  O  O27  1  0.790  0.716  0.010  1.0
  O  O28  1  0.487  0.298  0.215  1.0
  O  O29  1  0.513  0.702  0.215  1.0
  O  O30  1  0.513  0.298  0.785  1.0
  O  O31  1  0.487  0.702  0.785  1.0
  O  O32  1  0.221  0.487  0.294  1.0
  O  O33  1  0.221  0.513  0.706  1.0
  O  O34  1  0.779  0.513  0.294  1.0
  O  O35  1  0.779  0.487  0.706  1.0
  O  O36  1  0.295  0.220  0.495  1.0
  O  O37  1  0.705  0.220  0.505  1.0
  O  O38  1  0.295  0.780  0.505  1.0
  O  O39  1  0.705  0.780  0.495  1.0
[/CIF]
.
The crystal structure described by EuHfCrSnO6 crystallizes in the orthorhombic P222 space group. There are four inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form EuO12 cuboctahedra that share faces with four equivalent Hf(1)O6 octahedra and faces with four equivalent Cr(1)O6 octahedra. In the second Eu site, Eu(2) is bonded to four equivalent O(4), four equivalent O(5), and four equivalent O(6) atoms to form EuO12 cuboctahedra that share faces with four equivalent Hf(1)O6 octahedra and faces with four equivalent Cr(1)O6 octahedra. In the third Eu site, Eu(3) is bonded in a distorted body-centered cubic geometry to four equivalent O(1) and four equivalent O(5) atoms. In the fourth Eu site, Eu(4) is bonded in a distorted square co-planar geometry to four equivalent O(3) and four equivalent O(4) atoms. Hf(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form HfO6 octahedra that share corners with six equivalent Cr(1)O6 octahedra,  a faceface with one Eu(1)O12 cuboctahedra, and  a faceface with one Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-27°. Cr(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form CrO6 octahedra that share corners with six equivalent Hf(1)O6 octahedra,  a faceface with one Eu(1)O12 cuboctahedra, and  a faceface with one Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 22-27°. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a square co-planar geometry to four equivalent O(6) atoms. In the second Sn site, Sn(2) is bonded in a square co-planar geometry to four equivalent O(2) atoms. In the third Sn site, Sn(3) is bonded in a square co-planar geometry to four equivalent O(3) atoms. In the fourth Sn site, Sn(4) is bonded in a square co-planar geometry to four equivalent O(1) atoms. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 4-coordinate geometry to one Eu(2), one Eu(3), one Hf(1), and one Cr(1) atom. In the second O site, O(6) is bonded in a 4-coordinate geometry to one Eu(2), one Hf(1), one Cr(1), and one Sn(1) atom. In the third O site, O(1) is bonded in a 5-coordinate geometry to one Eu(1), one Eu(3), one Hf(1), one Cr(1), and one Sn(4) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Eu(1), one Hf(1), one Cr(1), and one Sn(2) atom. In the fifth O site, O(3) is bonded in a 5-coordinate geometry to one Eu(1), one Eu(4), one Hf(1), one Cr(1), and one Sn(3) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Eu(2), one Eu(4), one Hf(1), and one Cr(1) atom. is represented by the CIF file [CIF]
data_EuHfCrSnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.782
_cell_length_b   8.656
_cell_length_c   8.675
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   659.456
_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
  Eu  Eu0  1  0.000  0.000  0.000  1.0
  Eu  Eu1  1  0.500  0.500  0.500  1.0
  Eu  Eu2  1  0.000  0.500  0.500  1.0
  Eu  Eu3  1  0.500  0.500  0.000  1.0
  Hf  Hf4  1  0.259  0.249  0.244  1.0
  Hf  Hf5  1  0.741  0.751  0.244  1.0
  Hf  Hf6  1  0.741  0.249  0.756  1.0
  Hf  Hf7  1  0.259  0.751  0.756  1.0
  Cr  Cr8  1  0.748  0.755  0.749  1.0
  Cr  Cr9  1  0.252  0.245  0.749  1.0
  Cr  Cr10  1  0.252  0.755  0.251  1.0
  Cr  Cr11  1  0.748  0.245  0.251  1.0
  Sn  Sn12  1  0.500  0.000  0.500  1.0
  Sn  Sn13  1  0.500  0.000  0.000  1.0
  Sn  Sn14  1  0.000  0.500  0.000  1.0
  Sn  Sn15  1  0.000  0.000  0.500  1.0
  O  O16  1  0.007  0.206  0.287  1.0
  O  O17  1  0.993  0.794  0.287  1.0
  O  O18  1  0.993  0.206  0.713  1.0
  O  O19  1  0.007  0.794  0.713  1.0
  O  O20  1  0.281  0.006  0.202  1.0
  O  O21  1  0.281  0.994  0.798  1.0
  O  O22  1  0.719  0.994  0.202  1.0
  O  O23  1  0.719  0.006  0.798  1.0
  O  O24  1  0.210  0.284  0.010  1.0
  O  O25  1  0.790  0.284  0.990  1.0
  O  O26  1  0.210  0.716  0.990  1.0
  O  O27  1  0.790  0.716  0.010  1.0
  O  O28  1  0.487  0.298  0.215  1.0
  O  O29  1  0.513  0.702  0.215  1.0
  O  O30  1  0.513  0.298  0.785  1.0
  O  O31  1  0.487  0.702  0.785  1.0
  O  O32  1  0.221  0.487  0.294  1.0
  O  O33  1  0.221  0.513  0.706  1.0
  O  O34  1  0.779  0.513  0.294  1.0
  O  O35  1  0.779  0.487  0.706  1.0
  O  O36  1  0.295  0.220  0.495  1.0
  O  O37  1  0.705  0.220  0.505  1.0
  O  O38  1  0.295  0.780  0.505  1.0
  O  O39  1  0.705  0.780  0.495  1.0
[/CIF]
.