The material structure described by Y2Ni2Al crystallizes in the orthorhombic Immm space group. Y(1) is bonded in a 10-coordinate geometry to six equivalent Ni(1) and four equivalent Al(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Y(1), one Ni(1), and two equivalent Al(1) atoms. Al(1) is bonded to eight equivalent Y(1) and four equivalent Ni(1) atoms to form a mixture of distorted face and edge-sharing AlY8Ni4 cuboctahedra. is represented by the CIF file [CIF]
data_Y2AlNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.373
_cell_length_b   5.373
_cell_length_c   5.373
_cell_angle_alpha   134.341
_cell_angle_beta   119.930
_cell_angle_gamma   78.588
_symmetry_Int_Tables_number   1
_cell_volume   93.254
_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  0.703  0.203  0.500  1.0
  Y  Y1  1  0.297  0.797  0.500  1.0
  Al  Al2  1  0.000  0.000  0.000  1.0
  Ni  Ni3  1  0.268  0.500  0.768  1.0
  Ni  Ni4  1  0.732  0.500  0.232  1.0
[/CIF]
.
The material structure described by Y2Ni2Al crystallizes in the orthorhombic Immm space group. Y(1) is bonded in a 10-coordinate geometry to six equivalent Ni(1) and four equivalent Al(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Y(1), one Ni(1), and two equivalent Al(1) atoms. Al(1) is bonded to eight equivalent Y(1) and four equivalent Ni(1) atoms to form a mixture of distorted face and edge-sharing AlY8Ni4 cuboctahedra. is represented by the CIF file [CIF]
data_Y2AlNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.373
_cell_length_b   5.373
_cell_length_c   5.373
_cell_angle_alpha   134.341
_cell_angle_beta   119.930
_cell_angle_gamma   78.588
_symmetry_Int_Tables_number   1
_cell_volume   93.254
_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  0.703  0.203  0.500  1.0
  Y  Y1  1  0.297  0.797  0.500  1.0
  Al  Al2  1  0.000  0.000  0.000  1.0
  Ni  Ni3  1  0.268  0.500  0.768  1.0
  Ni  Ni4  1  0.732  0.500  0.232  1.0
[/CIF]
.