The crystal structure described by NpPd5Al2 crystallizes in the tetragonal I4/mmm space group. Np(1) is bonded to four equivalent Pd(2) and eight equivalent Pd(1) atoms to form a mixture of corner and face-sharing NpPd12 cuboctahedra. There are two inequivalent Pd sites. In the first Pd site, Pd(2) is bonded in a distorted square co-planar geometry to four equivalent Np(1) atoms. In the second Pd site, Pd(1) is bonded in a 6-coordinate geometry to two equivalent Np(1) and four equivalent Al(1) atoms. Al(1) is bonded in a body-centered cubic geometry to eight equivalent Pd(1) atoms. is represented by the CIF file [CIF]
data_NpAl2Pd5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.011
_cell_length_b   8.011
_cell_length_c   8.011
_cell_angle_alpha   149.997
_cell_angle_beta   149.997
_cell_angle_gamma   42.946
_symmetry_Int_Tables_number   1
_cell_volume   128.201
_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
  Np  Np0  1  0.000  0.000  0.000  1.0
  Al  Al1  1  0.747  0.747  0.000  1.0
  Al  Al2  1  0.253  0.253  0.000  1.0
  Pd  Pd3  1  0.355  0.855  0.500  1.0
  Pd  Pd4  1  0.145  0.645  0.500  1.0
  Pd  Pd5  1  0.855  0.355  0.500  1.0
  Pd  Pd6  1  0.645  0.145  0.500  1.0
  Pd  Pd7  1  0.500  0.500  0.000  1.0
[/CIF]
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The crystal structure described by NpPd5Al2 crystallizes in the tetragonal I4/mmm space group. Np(1) is bonded to four equivalent Pd(2) and eight equivalent Pd(1) atoms to form a mixture of corner and face-sharing NpPd12 cuboctahedra. There are two inequivalent Pd sites. In the first Pd site, Pd(2) is bonded in a distorted square co-planar geometry to four equivalent Np(1) atoms. In the second Pd site, Pd(1) is bonded in a 6-coordinate geometry to two equivalent Np(1) and four equivalent Al(1) atoms. Al(1) is bonded in a body-centered cubic geometry to eight equivalent Pd(1) atoms. is represented by the CIF file [CIF]
data_NpAl2Pd5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.011
_cell_length_b   8.011
_cell_length_c   8.011
_cell_angle_alpha   149.997
_cell_angle_beta   149.997
_cell_angle_gamma   42.946
_symmetry_Int_Tables_number   1
_cell_volume   128.201
_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
  Np  Np0  1  0.000  0.000  0.000  1.0
  Al  Al1  1  0.747  0.747  0.000  1.0
  Al  Al2  1  0.253  0.253  0.000  1.0
  Pd  Pd3  1  0.355  0.855  0.500  1.0
  Pd  Pd4  1  0.145  0.645  0.500  1.0
  Pd  Pd5  1  0.855  0.355  0.500  1.0
  Pd  Pd6  1  0.645  0.145  0.500  1.0
  Pd  Pd7  1  0.500  0.500  0.000  1.0
[/CIF]
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