The crystal structure described by Ce2Al3Sn is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to two equivalent Al(3), four equivalent Al(1), four equivalent Al(2), and two equivalent Sn(1) atoms to form CeAl10Sn2 cuboctahedra that share edges with four equivalent Ce(1)Al10Sn2 cuboctahedra, edges with eight equivalent Ce(2)Al8Sn4 cuboctahedra, faces with four equivalent Ce(1)Al10Sn2 cuboctahedra, and faces with four equivalent Ce(2)Al8Sn4 cuboctahedra. In the second Ce site, Ce(2) is bonded to two equivalent Al(1), two equivalent Al(2), four equivalent Al(3), and four equivalent Sn(1) atoms to form CeAl8Sn4 cuboctahedra that share edges with four equivalent Ce(2)Al8Sn4 cuboctahedra, edges with eight equivalent Ce(1)Al10Sn2 cuboctahedra, faces with four equivalent Ce(1)Al10Sn2 cuboctahedra, and faces with four equivalent Ce(2)Al8Sn4 cuboctahedra. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), one Al(2), and two equivalent Al(3) atoms. In the second Al site, Al(2) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), one Al(1), and two equivalent Sn(1) atoms. In the third Al site, Al(3) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), two equivalent Al(1), and one Sn(1) atom. Sn(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Al(3), and two equivalent Al(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce2Al3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.160
_cell_length_b   4.484
_cell_length_c   7.794
_cell_angle_alpha   90.009
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   145.391
_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  0.000  1.000  0.996  1.0
  Ce  Ce1  1  0.000  0.500  0.505  1.0
  Al  Al2  1  0.500  0.500  0.831  1.0
  Al  Al3  1  0.500  0.500  0.153  1.0
  Al  Al4  1  0.500  1.000  0.679  1.0
  Sn  Sn5  1  0.500  1.000  0.336  1.0
[/CIF]
.
The crystal structure described by Ce2Al3Sn is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to two equivalent Al(3), four equivalent Al(1), four equivalent Al(2), and two equivalent Sn(1) atoms to form CeAl10Sn2 cuboctahedra that share edges with four equivalent Ce(1)Al10Sn2 cuboctahedra, edges with eight equivalent Ce(2)Al8Sn4 cuboctahedra, faces with four equivalent Ce(1)Al10Sn2 cuboctahedra, and faces with four equivalent Ce(2)Al8Sn4 cuboctahedra. In the second Ce site, Ce(2) is bonded to two equivalent Al(1), two equivalent Al(2), four equivalent Al(3), and four equivalent Sn(1) atoms to form CeAl8Sn4 cuboctahedra that share edges with four equivalent Ce(2)Al8Sn4 cuboctahedra, edges with eight equivalent Ce(1)Al10Sn2 cuboctahedra, faces with four equivalent Ce(1)Al10Sn2 cuboctahedra, and faces with four equivalent Ce(2)Al8Sn4 cuboctahedra. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), one Al(2), and two equivalent Al(3) atoms. In the second Al site, Al(2) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), one Al(1), and two equivalent Sn(1) atoms. In the third Al site, Al(3) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), two equivalent Al(1), and one Sn(1) atom. Sn(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Al(3), and two equivalent Al(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce2Al3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.160
_cell_length_b   4.484
_cell_length_c   7.794
_cell_angle_alpha   90.009
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   145.391
_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  0.000  1.000  0.996  1.0
  Ce  Ce1  1  0.000  0.500  0.505  1.0
  Al  Al2  1  0.500  0.500  0.831  1.0
  Al  Al3  1  0.500  0.500  0.153  1.0
  Al  Al4  1  0.500  1.000  0.679  1.0
  Sn  Sn5  1  0.500  1.000  0.336  1.0
[/CIF]
.