The material structure described by Y2Al3Si2 crystallizes in the monoclinic C2/m space group. Y(1) is bonded in a 11-coordinate geometry to two equivalent Al(2), four equivalent Al(1), and five equivalent Si(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted water-like geometry to four equivalent Y(1) and two equivalent Si(1) atoms. In the second Al site, Al(2) is bonded in a 6-coordinate geometry to four equivalent Y(1) and two equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to five equivalent Y(1), one Al(2), two equivalent Al(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_Y2Al3Si2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.040
_cell_length_b   5.465
_cell_length_c   6.607
_cell_angle_alpha   100.352
_cell_angle_beta   90.000
_cell_angle_gamma   111.693
_symmetry_Int_Tables_number   1
_cell_volume   133.016
_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
  Y  Y0  1  0.380  0.760  0.678  1.0
  Y  Y1  1  0.620  0.240  0.322  1.0
  Al  Al2  1  0.694  0.389  0.868  1.0
  Al  Al3  1  0.000  0.000  0.000  1.0
  Al  Al4  1  0.306  0.611  0.132  1.0
  Si  Si5  1  0.908  0.816  0.358  1.0
  Si  Si6  1  0.092  0.184  0.642  1.0
[/CIF]
.
The material structure described by Y2Al3Si2 crystallizes in the monoclinic C2/m space group. Y(1) is bonded in a 11-coordinate geometry to two equivalent Al(2), four equivalent Al(1), and five equivalent Si(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted water-like geometry to four equivalent Y(1) and two equivalent Si(1) atoms. In the second Al site, Al(2) is bonded in a 6-coordinate geometry to four equivalent Y(1) and two equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to five equivalent Y(1), one Al(2), two equivalent Al(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_Y2Al3Si2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.040
_cell_length_b   5.465
_cell_length_c   6.607
_cell_angle_alpha   100.352
_cell_angle_beta   90.000
_cell_angle_gamma   111.693
_symmetry_Int_Tables_number   1
_cell_volume   133.016
_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
  Y  Y0  1  0.380  0.760  0.678  1.0
  Y  Y1  1  0.620  0.240  0.322  1.0
  Al  Al2  1  0.694  0.389  0.868  1.0
  Al  Al3  1  0.000  0.000  0.000  1.0
  Al  Al4  1  0.306  0.611  0.132  1.0
  Si  Si5  1  0.908  0.816  0.358  1.0
  Si  Si6  1  0.092  0.184  0.642  1.0
[/CIF]
.