The material structure described by NdAsO4 is Zircon-like structured and crystallizes in the monoclinic P2_1/c space group. Nd(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and three equivalent O(4) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1) and one As(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Nd(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to three equivalent Nd(1) and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_NdAsO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.199
_cell_length_b   6.772
_cell_length_c   8.382
_cell_angle_alpha   53.809
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   329.791
_cell_formula_units_Z   4
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
  Nd  Nd0  1  0.849  0.813  0.782  1.0
  Nd  Nd1  1  0.151  0.187  0.218  1.0
  Nd  Nd2  1  0.349  0.187  0.718  1.0
  Nd  Nd3  1  0.651  0.813  0.282  1.0
  As  As4  1  0.162  0.690  0.197  1.0
  As  As5  1  0.662  0.310  0.303  1.0
  As  As6  1  0.338  0.690  0.697  1.0
  As  As7  1  0.838  0.310  0.803  1.0
  O  O8  1  0.787  0.609  0.616  1.0
  O  O9  1  0.213  0.391  0.384  1.0
  O  O10  1  0.504  0.829  0.748  1.0
  O  O11  1  0.606  0.350  0.482  1.0
  O  O12  1  0.287  0.391  0.884  1.0
  O  O13  1  0.996  0.829  0.248  1.0
  O  O14  1  0.004  0.171  0.752  1.0
  O  O15  1  0.156  0.895  0.607  1.0
  O  O16  1  0.656  0.105  0.893  1.0
  O  O17  1  0.394  0.650  0.518  1.0
  O  O18  1  0.894  0.350  0.982  1.0
  O  O19  1  0.344  0.895  0.107  1.0
  O  O20  1  0.713  0.609  0.116  1.0
  O  O21  1  0.496  0.171  0.252  1.0
  O  O22  1  0.844  0.105  0.393  1.0
  O  O23  1  0.106  0.650  0.018  1.0
[/CIF]
.
The material structure described by NdAsO4 is Zircon-like structured and crystallizes in the monoclinic P2_1/c space group. Nd(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and three equivalent O(4) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Nd(1) and one As(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Nd(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to three equivalent Nd(1) and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_NdAsO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.199
_cell_length_b   6.772
_cell_length_c   8.382
_cell_angle_alpha   53.809
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   329.791
_cell_formula_units_Z   4
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
  Nd  Nd0  1  0.849  0.813  0.782  1.0
  Nd  Nd1  1  0.151  0.187  0.218  1.0
  Nd  Nd2  1  0.349  0.187  0.718  1.0
  Nd  Nd3  1  0.651  0.813  0.282  1.0
  As  As4  1  0.162  0.690  0.197  1.0
  As  As5  1  0.662  0.310  0.303  1.0
  As  As6  1  0.338  0.690  0.697  1.0
  As  As7  1  0.838  0.310  0.803  1.0
  O  O8  1  0.787  0.609  0.616  1.0
  O  O9  1  0.213  0.391  0.384  1.0
  O  O10  1  0.504  0.829  0.748  1.0
  O  O11  1  0.606  0.350  0.482  1.0
  O  O12  1  0.287  0.391  0.884  1.0
  O  O13  1  0.996  0.829  0.248  1.0
  O  O14  1  0.004  0.171  0.752  1.0
  O  O15  1  0.156  0.895  0.607  1.0
  O  O16  1  0.656  0.105  0.893  1.0
  O  O17  1  0.394  0.650  0.518  1.0
  O  O18  1  0.894  0.350  0.982  1.0
  O  O19  1  0.344  0.895  0.107  1.0
  O  O20  1  0.713  0.609  0.116  1.0
  O  O21  1  0.496  0.171  0.252  1.0
  O  O22  1  0.844  0.105  0.393  1.0
  O  O23  1  0.106  0.650  0.018  1.0
[/CIF]
.