The crystal structure described by EuZr4SnO12 crystallizes in the orthorhombic Amm2 space group. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(1) atoms. Zr(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form ZrO6 octahedra that share corners with six equivalent Zr(1)O6 octahedra and corners with two equivalent Sn(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 24-56°. Sn(1) is bonded to two equivalent O(3) and two equivalent O(5) atoms to form SnO4 tetrahedra that share corners with eight equivalent Zr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-71°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Eu(1) and two equivalent Zr(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Eu(1) and two equivalent Zr(1) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to two equivalent Zr(1) and one Sn(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Eu(1) and two equivalent Zr(1) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Zr(1) and one Sn(1) atom. is represented by the CIF file [CIF]
data_EuZr4SnO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.676
_cell_length_b   5.676
_cell_length_c   8.216
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.785
_symmetry_Int_Tables_number   1
_cell_volume   264.668
_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
  Eu  Eu0  1  0.488  0.512  0.000  1.0
  Zr  Zr1  1  0.503  0.004  0.244  1.0
  Zr  Zr2  1  0.503  0.004  0.756  1.0
  Zr  Zr3  1  0.996  0.497  0.756  1.0
  Zr  Zr4  1  0.996  0.497  0.244  1.0
  Sn  Sn5  1  0.026  0.974  0.500  1.0
  O  O6  1  0.316  0.317  0.224  1.0
  O  O7  1  0.683  0.684  0.224  1.0
  O  O8  1  0.683  0.684  0.776  1.0
  O  O9  1  0.316  0.317  0.776  1.0
  O  O10  1  0.216  0.784  0.202  1.0
  O  O11  1  0.847  0.153  0.328  1.0
  O  O12  1  0.847  0.153  0.672  1.0
  O  O13  1  0.216  0.784  0.798  1.0
  O  O14  1  0.561  0.073  0.000  1.0
  O  O15  1  0.376  0.013  0.500  1.0
  O  O16  1  0.927  0.439  0.000  1.0
  O  O17  1  0.987  0.624  0.500  1.0
[/CIF]
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The crystal structure described by EuZr4SnO12 crystallizes in the orthorhombic Amm2 space group. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(1) atoms. Zr(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form ZrO6 octahedra that share corners with six equivalent Zr(1)O6 octahedra and corners with two equivalent Sn(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 24-56°. Sn(1) is bonded to two equivalent O(3) and two equivalent O(5) atoms to form SnO4 tetrahedra that share corners with eight equivalent Zr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-71°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Eu(1) and two equivalent Zr(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Eu(1) and two equivalent Zr(1) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to two equivalent Zr(1) and one Sn(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Eu(1) and two equivalent Zr(1) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Zr(1) and one Sn(1) atom. is represented by the CIF file [CIF]
data_EuZr4SnO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.676
_cell_length_b   5.676
_cell_length_c   8.216
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.785
_symmetry_Int_Tables_number   1
_cell_volume   264.668
_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
  Eu  Eu0  1  0.488  0.512  0.000  1.0
  Zr  Zr1  1  0.503  0.004  0.244  1.0
  Zr  Zr2  1  0.503  0.004  0.756  1.0
  Zr  Zr3  1  0.996  0.497  0.756  1.0
  Zr  Zr4  1  0.996  0.497  0.244  1.0
  Sn  Sn5  1  0.026  0.974  0.500  1.0
  O  O6  1  0.316  0.317  0.224  1.0
  O  O7  1  0.683  0.684  0.224  1.0
  O  O8  1  0.683  0.684  0.776  1.0
  O  O9  1  0.316  0.317  0.776  1.0
  O  O10  1  0.216  0.784  0.202  1.0
  O  O11  1  0.847  0.153  0.328  1.0
  O  O12  1  0.847  0.153  0.672  1.0
  O  O13  1  0.216  0.784  0.798  1.0
  O  O14  1  0.561  0.073  0.000  1.0
  O  O15  1  0.376  0.013  0.500  1.0
  O  O16  1  0.927  0.439  0.000  1.0
  O  O17  1  0.987  0.624  0.500  1.0
[/CIF]
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