The crystal structure described by NpBe13 crystallizes in the orthorhombic Ibam space group. There are five inequivalent Be sites. In the first Be site, Be(1) is bonded to two equivalent Be(3), two equivalent Be(4), four equivalent Be(2), and four equivalent Be(5) atoms to form a mixture of face and corner-sharing BeBe12 cuboctahedra. In the second Be site, Be(2) is bonded to one Be(1), one Be(2), two equivalent Be(3), two equivalent Be(4), four equivalent Be(5), and two equivalent Np(1) atoms to form distorted BeNp2Be10 cuboctahedra that share  a cornercorner with one Be(1)Be12 cuboctahedra, corners with three equivalent Be(3)Np2Be10 cuboctahedra, corners with three equivalent Be(4)Np2Be10 cuboctahedra, corners with ten equivalent Be(5)Np2Be10 cuboctahedra, corners with eleven equivalent Be(2)Np2Be10 cuboctahedra, edges with two equivalent Be(5)Np2Be10 cuboctahedra, edges with three equivalent Be(3)Np2Be10 cuboctahedra, edges with three equivalent Be(4)Np2Be10 cuboctahedra, faces with two equivalent Be(1)Be12 cuboctahedra, faces with three equivalent Be(3)Np2Be10 cuboctahedra, faces with three equivalent Be(4)Np2Be10 cuboctahedra, faces with eight equivalent Be(5)Np2Be10 cuboctahedra, and faces with nine equivalent Be(2)Np2Be10 cuboctahedra. In the third Be site, Be(3) is bonded to one Be(1), two equivalent Be(5), three equivalent Be(4), four equivalent Be(2), and two equivalent Np(1) atoms to form distorted BeNp2Be10 cuboctahedra that share  a cornercorner with one Be(1)Be12 cuboctahedra, corners with four equivalent Be(4)Np2Be10 cuboctahedra, corners with six equivalent Be(2)Np2Be10 cuboctahedra, corners with seven equivalent Be(3)Np2Be10 cuboctahedra, corners with ten equivalent Be(5)Np2Be10 cuboctahedra, edges with two equivalent Be(5)Np2Be10 cuboctahedra, edges with six equivalent Be(2)Np2Be10 cuboctahedra, faces with two equivalent Be(1)Be12 cuboctahedra, faces with three equivalent Be(3)Np2Be10 cuboctahedra, faces with four equivalent Be(4)Np2Be10 cuboctahedra, faces with six equivalent Be(2)Np2Be10 cuboctahedra, and faces with ten equivalent Be(5)Np2Be10 cuboctahedra. In the fourth Be site, Be(4) is bonded to one Be(1), two equivalent Be(5), three equivalent Be(3), four equivalent Be(2), and two equivalent Np(1) atoms to form distorted BeNp2Be10 cuboctahedra that share  a cornercorner with one Be(1)Be12 cuboctahedra, corners with four equivalent Be(3)Np2Be10 cuboctahedra, corners with six equivalent Be(2)Np2Be10 cuboctahedra, corners with seven equivalent Be(4)Np2Be10 cuboctahedra, corners with ten equivalent Be(5)Np2Be10 cuboctahedra, edges with two equivalent Be(5)Np2Be10 cuboctahedra, edges with six equivalent Be(2)Np2Be10 cuboctahedra, faces with two equivalent Be(1)Be12 cuboctahedra, faces with three equivalent Be(4)Np2Be10 cuboctahedra, faces with four equivalent Be(3)Np2Be10 cuboctahedra, faces with six equivalent Be(2)Np2Be10 cuboctahedra, and faces with ten equivalent Be(5)Np2Be10 cuboctahedra. In the fifth Be site, Be(5) is bonded to one Be(1), one Be(3), one Be(4), three equivalent Be(5), four equivalent Be(2), and two equivalent Np(1) atoms to form distorted BeNp2Be10 cuboctahedra that share  a cornercorner with one Be(1)Be12 cuboctahedra, corners with five equivalent Be(3)Np2Be10 cuboctahedra, corners with five equivalent Be(4)Np2Be10 cuboctahedra, corners with seven equivalent Be(5)Np2Be10 cuboctahedra, corners with ten equivalent Be(2)Np2Be10 cuboctahedra,  an edgeedge with one Be(3)Np2Be10 cuboctahedra,  an edgeedge with one Be(4)Np2Be10 cuboctahedra, edges with two equivalent Be(2)Np2Be10 cuboctahedra, edges with four equivalent Be(5)Np2Be10 cuboctahedra, faces with two equivalent Be(1)Be12 cuboctahedra, faces with five equivalent Be(3)Np2Be10 cuboctahedra, faces with five equivalent Be(4)Np2Be10 cuboctahedra, faces with five equivalent Be(5)Np2Be10 cuboctahedra, and faces with eight equivalent Be(2)Np2Be10 cuboctahedra. Np(1) is bonded in a 24-coordinate geometry to four equivalent Be(3), four equivalent Be(4), eight equivalent Be(2), and eight equivalent Be(5) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpBe13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.252
_cell_length_b   7.252
_cell_length_c   7.258
_cell_angle_alpha   59.973
_cell_angle_beta   59.973
_cell_angle_gamma   59.775
_symmetry_Int_Tables_number   1
_cell_volume   269.341
_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  0.250  0.250  0.250  1.0
  Np  Np1  1  0.750  0.750  0.750  1.0
  Be  Be2  1  0.000  0.000  0.000  1.0
  Be  Be3  1  0.500  0.500  0.500  1.0
  Be  Be4  1  0.290  0.938  0.063  1.0
  Be  Be5  1  0.563  0.437  0.789  1.0
  Be  Be6  1  0.791  0.209  0.561  1.0
  Be  Be7  1  0.562  0.789  0.211  1.0
  Be  Be8  1  0.438  0.211  0.789  1.0
  Be  Be9  1  0.438  0.790  0.563  1.0
  Be  Be10  1  0.790  0.438  0.210  1.0
  Be  Be11  1  0.062  0.289  0.938  1.0
  Be  Be12  1  0.937  0.063  0.289  1.0
  Be  Be13  1  0.709  0.291  0.061  1.0
  Be  Be14  1  0.938  0.711  0.062  1.0
  Be  Be15  1  0.711  0.938  0.289  1.0
  Be  Be16  1  0.063  0.937  0.711  1.0
  Be  Be17  1  0.289  0.062  0.711  1.0
  Be  Be18  1  0.291  0.709  0.939  1.0
  Be  Be19  1  0.789  0.562  0.438  1.0
  Be  Be20  1  0.209  0.791  0.439  1.0
  Be  Be21  1  0.210  0.562  0.790  1.0
  Be  Be22  1  0.562  0.210  0.437  1.0
  Be  Be23  1  0.437  0.563  0.211  1.0
  Be  Be24  1  0.211  0.438  0.562  1.0
  Be  Be25  1  0.062  0.710  0.290  1.0
  Be  Be26  1  0.710  0.062  0.937  1.0
  Be  Be27  1  0.938  0.290  0.710  1.0
[/CIF]
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The crystal structure described by NpBe13 crystallizes in the orthorhombic Ibam space group. There are five inequivalent Be sites. In the first Be site, Be(1) is bonded to two equivalent Be(3), two equivalent Be(4), four equivalent Be(2), and four equivalent Be(5) atoms to form a mixture of face and corner-sharing BeBe12 cuboctahedra. In the second Be site, Be(2) is bonded to one Be(1), one Be(2), two equivalent Be(3), two equivalent Be(4), four equivalent Be(5), and two equivalent Np(1) atoms to form distorted BeNp2Be10 cuboctahedra that share  a cornercorner with one Be(1)Be12 cuboctahedra, corners with three equivalent Be(3)Np2Be10 cuboctahedra, corners with three equivalent Be(4)Np2Be10 cuboctahedra, corners with ten equivalent Be(5)Np2Be10 cuboctahedra, corners with eleven equivalent Be(2)Np2Be10 cuboctahedra, edges with two equivalent Be(5)Np2Be10 cuboctahedra, edges with three equivalent Be(3)Np2Be10 cuboctahedra, edges with three equivalent Be(4)Np2Be10 cuboctahedra, faces with two equivalent Be(1)Be12 cuboctahedra, faces with three equivalent Be(3)Np2Be10 cuboctahedra, faces with three equivalent Be(4)Np2Be10 cuboctahedra, faces with eight equivalent Be(5)Np2Be10 cuboctahedra, and faces with nine equivalent Be(2)Np2Be10 cuboctahedra. In the third Be site, Be(3) is bonded to one Be(1), two equivalent Be(5), three equivalent Be(4), four equivalent Be(2), and two equivalent Np(1) atoms to form distorted BeNp2Be10 cuboctahedra that share  a cornercorner with one Be(1)Be12 cuboctahedra, corners with four equivalent Be(4)Np2Be10 cuboctahedra, corners with six equivalent Be(2)Np2Be10 cuboctahedra, corners with seven equivalent Be(3)Np2Be10 cuboctahedra, corners with ten equivalent Be(5)Np2Be10 cuboctahedra, edges with two equivalent Be(5)Np2Be10 cuboctahedra, edges with six equivalent Be(2)Np2Be10 cuboctahedra, faces with two equivalent Be(1)Be12 cuboctahedra, faces with three equivalent Be(3)Np2Be10 cuboctahedra, faces with four equivalent Be(4)Np2Be10 cuboctahedra, faces with six equivalent Be(2)Np2Be10 cuboctahedra, and faces with ten equivalent Be(5)Np2Be10 cuboctahedra. In the fourth Be site, Be(4) is bonded to one Be(1), two equivalent Be(5), three equivalent Be(3), four equivalent Be(2), and two equivalent Np(1) atoms to form distorted BeNp2Be10 cuboctahedra that share  a cornercorner with one Be(1)Be12 cuboctahedra, corners with four equivalent Be(3)Np2Be10 cuboctahedra, corners with six equivalent Be(2)Np2Be10 cuboctahedra, corners with seven equivalent Be(4)Np2Be10 cuboctahedra, corners with ten equivalent Be(5)Np2Be10 cuboctahedra, edges with two equivalent Be(5)Np2Be10 cuboctahedra, edges with six equivalent Be(2)Np2Be10 cuboctahedra, faces with two equivalent Be(1)Be12 cuboctahedra, faces with three equivalent Be(4)Np2Be10 cuboctahedra, faces with four equivalent Be(3)Np2Be10 cuboctahedra, faces with six equivalent Be(2)Np2Be10 cuboctahedra, and faces with ten equivalent Be(5)Np2Be10 cuboctahedra. In the fifth Be site, Be(5) is bonded to one Be(1), one Be(3), one Be(4), three equivalent Be(5), four equivalent Be(2), and two equivalent Np(1) atoms to form distorted BeNp2Be10 cuboctahedra that share  a cornercorner with one Be(1)Be12 cuboctahedra, corners with five equivalent Be(3)Np2Be10 cuboctahedra, corners with five equivalent Be(4)Np2Be10 cuboctahedra, corners with seven equivalent Be(5)Np2Be10 cuboctahedra, corners with ten equivalent Be(2)Np2Be10 cuboctahedra,  an edgeedge with one Be(3)Np2Be10 cuboctahedra,  an edgeedge with one Be(4)Np2Be10 cuboctahedra, edges with two equivalent Be(2)Np2Be10 cuboctahedra, edges with four equivalent Be(5)Np2Be10 cuboctahedra, faces with two equivalent Be(1)Be12 cuboctahedra, faces with five equivalent Be(3)Np2Be10 cuboctahedra, faces with five equivalent Be(4)Np2Be10 cuboctahedra, faces with five equivalent Be(5)Np2Be10 cuboctahedra, and faces with eight equivalent Be(2)Np2Be10 cuboctahedra. Np(1) is bonded in a 24-coordinate geometry to four equivalent Be(3), four equivalent Be(4), eight equivalent Be(2), and eight equivalent Be(5) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NpBe13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.252
_cell_length_b   7.252
_cell_length_c   7.258
_cell_angle_alpha   59.973
_cell_angle_beta   59.973
_cell_angle_gamma   59.775
_symmetry_Int_Tables_number   1
_cell_volume   269.341
_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  0.250  0.250  0.250  1.0
  Np  Np1  1  0.750  0.750  0.750  1.0
  Be  Be2  1  0.000  0.000  0.000  1.0
  Be  Be3  1  0.500  0.500  0.500  1.0
  Be  Be4  1  0.290  0.938  0.063  1.0
  Be  Be5  1  0.563  0.437  0.789  1.0
  Be  Be6  1  0.791  0.209  0.561  1.0
  Be  Be7  1  0.562  0.789  0.211  1.0
  Be  Be8  1  0.438  0.211  0.789  1.0
  Be  Be9  1  0.438  0.790  0.563  1.0
  Be  Be10  1  0.790  0.438  0.210  1.0
  Be  Be11  1  0.062  0.289  0.938  1.0
  Be  Be12  1  0.937  0.063  0.289  1.0
  Be  Be13  1  0.709  0.291  0.061  1.0
  Be  Be14  1  0.938  0.711  0.062  1.0
  Be  Be15  1  0.711  0.938  0.289  1.0
  Be  Be16  1  0.063  0.937  0.711  1.0
  Be  Be17  1  0.289  0.062  0.711  1.0
  Be  Be18  1  0.291  0.709  0.939  1.0
  Be  Be19  1  0.789  0.562  0.438  1.0
  Be  Be20  1  0.209  0.791  0.439  1.0
  Be  Be21  1  0.210  0.562  0.790  1.0
  Be  Be22  1  0.562  0.210  0.437  1.0
  Be  Be23  1  0.437  0.563  0.211  1.0
  Be  Be24  1  0.211  0.438  0.562  1.0
  Be  Be25  1  0.062  0.710  0.290  1.0
  Be  Be26  1  0.710  0.062  0.937  1.0
  Be  Be27  1  0.938  0.290  0.710  1.0
[/CIF]
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