The crystal structure described by NpGa4 crystallizes in the orthorhombic Imma space group. Np(1) is bonded in a 13-coordinate geometry to three equivalent Ga(2), four equivalent Ga(1), and six equivalent Ga(3) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(3) is bonded in a 10-coordinate geometry to three equivalent Np(1), one Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. In the second Ga site, Ga(1) is bonded in a 12-coordinate geometry to four equivalent Np(1), two equivalent Ga(1), two equivalent Ga(3), and four equivalent Ga(2) atoms. In the third Ga site, Ga(2) is bonded in a 13-coordinate geometry to three equivalent Np(1), four equivalent Ga(1), and six equivalent Ga(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpGa4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.259
_cell_length_b   6.267
_cell_length_c   7.874
_cell_angle_alpha   113.476
_cell_angle_beta   105.688
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   184.194
_cell_formula_units_Z   2
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  0.888  0.638  0.775  1.0
  Np  Np1  1  0.112  0.362  0.225  1.0
  Ga  Ga2  1  0.500  0.000  0.000  1.0
  Ga  Ga3  1  0.500  0.500  0.000  1.0
  Ga  Ga4  1  0.108  0.857  0.215  1.0
  Ga  Ga5  1  0.892  0.143  0.785  1.0
  Ga  Ga6  1  0.697  0.162  0.394  1.0
  Ga  Ga7  1  0.303  0.838  0.606  1.0
  Ga  Ga8  1  0.303  0.270  0.606  1.0
  Ga  Ga9  1  0.697  0.730  0.394  1.0
[/CIF]
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The crystal structure described by NpGa4 crystallizes in the orthorhombic Imma space group. Np(1) is bonded in a 13-coordinate geometry to three equivalent Ga(2), four equivalent Ga(1), and six equivalent Ga(3) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(3) is bonded in a 10-coordinate geometry to three equivalent Np(1), one Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. In the second Ga site, Ga(1) is bonded in a 12-coordinate geometry to four equivalent Np(1), two equivalent Ga(1), two equivalent Ga(3), and four equivalent Ga(2) atoms. In the third Ga site, Ga(2) is bonded in a 13-coordinate geometry to three equivalent Np(1), four equivalent Ga(1), and six equivalent Ga(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpGa4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.259
_cell_length_b   6.267
_cell_length_c   7.874
_cell_angle_alpha   113.476
_cell_angle_beta   105.688
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   184.194
_cell_formula_units_Z   2
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  0.888  0.638  0.775  1.0
  Np  Np1  1  0.112  0.362  0.225  1.0
  Ga  Ga2  1  0.500  0.000  0.000  1.0
  Ga  Ga3  1  0.500  0.500  0.000  1.0
  Ga  Ga4  1  0.108  0.857  0.215  1.0
  Ga  Ga5  1  0.892  0.143  0.785  1.0
  Ga  Ga6  1  0.697  0.162  0.394  1.0
  Ga  Ga7  1  0.303  0.838  0.606  1.0
  Ga  Ga8  1  0.303  0.270  0.606  1.0
  Ga  Ga9  1  0.697  0.730  0.394  1.0
[/CIF]
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