The material described by SrNp(PO4)2 crystallizes in the orthorhombic Cmce space group. Sr(1) is bonded in a 10-coordinate geometry to two equivalent O(3), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. Np(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. In the second P site, P(2) is bonded in a tetrahedral geometry to two equivalent O(4) and two equivalent O(5) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one Np(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Np(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one Np(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one Np(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one Np(1), and one P(2) atom. is represented by the CIF file [CIF]
data_SrNp(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.977
_cell_length_b   6.977
_cell_length_c   13.391
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   99.233
_symmetry_Int_Tables_number   1
_cell_volume   643.436
_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
  Sr  Sr0  1  0.269  0.769  0.750  1.0
  Sr  Sr1  1  0.231  0.731  0.250  1.0
  Sr  Sr2  1  0.731  0.231  0.250  1.0
  Sr  Sr3  1  0.769  0.269  0.750  1.0
  Np  Np4  1  0.228  0.228  0.591  1.0
  Np  Np5  1  0.772  0.772  0.409  1.0
  Np  Np6  1  0.272  0.272  0.091  1.0
  Np  Np7  1  0.728  0.728  0.909  1.0
  P  P8  1  0.320  0.320  0.817  1.0
  P  P9  1  0.680  0.680  0.183  1.0
  P  P10  1  0.180  0.180  0.317  1.0
  P  P11  1  0.820  0.820  0.683  1.0
  P  P12  1  0.227  0.773  0.000  1.0
  P  P13  1  0.727  0.273  0.500  1.0
  P  P14  1  0.773  0.227  0.000  1.0
  P  P15  1  0.273  0.727  0.500  1.0
  O  O16  1  0.379  0.147  0.758  1.0
  O  O17  1  0.853  0.621  0.242  1.0
  O  O18  1  0.353  0.121  0.258  1.0
  O  O19  1  0.879  0.647  0.742  1.0
  O  O20  1  0.621  0.853  0.242  1.0
  O  O21  1  0.147  0.379  0.758  1.0
  O  O22  1  0.647  0.879  0.742  1.0
  O  O23  1  0.121  0.353  0.258  1.0
  O  O24  1  0.266  0.266  0.927  1.0
  O  O25  1  0.734  0.734  0.073  1.0
  O  O26  1  0.234  0.234  0.427  1.0
  O  O27  1  0.766  0.766  0.573  1.0
  O  O28  1  0.492  0.492  0.812  1.0
  O  O29  1  0.508  0.508  0.188  1.0
  O  O30  1  0.008  0.008  0.312  1.0
  O  O31  1  0.992  0.992  0.688  1.0
  O  O32  1  0.226  0.940  0.077  1.0
  O  O33  1  0.060  0.774  0.923  1.0
  O  O34  1  0.560  0.274  0.577  1.0
  O  O35  1  0.726  0.440  0.423  1.0
  O  O36  1  0.774  0.060  0.923  1.0
  O  O37  1  0.940  0.226  0.077  1.0
  O  O38  1  0.440  0.726  0.423  1.0
  O  O39  1  0.274  0.560  0.577  1.0
  O  O40  1  0.414  0.794  0.936  1.0
  O  O41  1  0.206  0.586  0.064  1.0
  O  O42  1  0.706  0.086  0.436  1.0
  O  O43  1  0.914  0.294  0.564  1.0
  O  O44  1  0.586  0.206  0.064  1.0
  O  O45  1  0.794  0.414  0.936  1.0
  O  O46  1  0.294  0.914  0.564  1.0
  O  O47  1  0.086  0.706  0.436  1.0
[/CIF]
.
The material described by SrNp(PO4)2 crystallizes in the orthorhombic Cmce space group. Sr(1) is bonded in a 10-coordinate geometry to two equivalent O(3), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. Np(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. In the second P site, P(2) is bonded in a tetrahedral geometry to two equivalent O(4) and two equivalent O(5) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one Np(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Np(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Sr(1), one Np(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one Np(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one Np(1), and one P(2) atom. is represented by the CIF file [CIF]
data_SrNp(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.977
_cell_length_b   6.977
_cell_length_c   13.391
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   99.233
_symmetry_Int_Tables_number   1
_cell_volume   643.436
_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
  Sr  Sr0  1  0.269  0.769  0.750  1.0
  Sr  Sr1  1  0.231  0.731  0.250  1.0
  Sr  Sr2  1  0.731  0.231  0.250  1.0
  Sr  Sr3  1  0.769  0.269  0.750  1.0
  Np  Np4  1  0.228  0.228  0.591  1.0
  Np  Np5  1  0.772  0.772  0.409  1.0
  Np  Np6  1  0.272  0.272  0.091  1.0
  Np  Np7  1  0.728  0.728  0.909  1.0
  P  P8  1  0.320  0.320  0.817  1.0
  P  P9  1  0.680  0.680  0.183  1.0
  P  P10  1  0.180  0.180  0.317  1.0
  P  P11  1  0.820  0.820  0.683  1.0
  P  P12  1  0.227  0.773  0.000  1.0
  P  P13  1  0.727  0.273  0.500  1.0
  P  P14  1  0.773  0.227  0.000  1.0
  P  P15  1  0.273  0.727  0.500  1.0
  O  O16  1  0.379  0.147  0.758  1.0
  O  O17  1  0.853  0.621  0.242  1.0
  O  O18  1  0.353  0.121  0.258  1.0
  O  O19  1  0.879  0.647  0.742  1.0
  O  O20  1  0.621  0.853  0.242  1.0
  O  O21  1  0.147  0.379  0.758  1.0
  O  O22  1  0.647  0.879  0.742  1.0
  O  O23  1  0.121  0.353  0.258  1.0
  O  O24  1  0.266  0.266  0.927  1.0
  O  O25  1  0.734  0.734  0.073  1.0
  O  O26  1  0.234  0.234  0.427  1.0
  O  O27  1  0.766  0.766  0.573  1.0
  O  O28  1  0.492  0.492  0.812  1.0
  O  O29  1  0.508  0.508  0.188  1.0
  O  O30  1  0.008  0.008  0.312  1.0
  O  O31  1  0.992  0.992  0.688  1.0
  O  O32  1  0.226  0.940  0.077  1.0
  O  O33  1  0.060  0.774  0.923  1.0
  O  O34  1  0.560  0.274  0.577  1.0
  O  O35  1  0.726  0.440  0.423  1.0
  O  O36  1  0.774  0.060  0.923  1.0
  O  O37  1  0.940  0.226  0.077  1.0
  O  O38  1  0.440  0.726  0.423  1.0
  O  O39  1  0.274  0.560  0.577  1.0
  O  O40  1  0.414  0.794  0.936  1.0
  O  O41  1  0.206  0.586  0.064  1.0
  O  O42  1  0.706  0.086  0.436  1.0
  O  O43  1  0.914  0.294  0.564  1.0
  O  O44  1  0.586  0.206  0.064  1.0
  O  O45  1  0.794  0.414  0.936  1.0
  O  O46  1  0.294  0.914  0.564  1.0
  O  O47  1  0.086  0.706  0.436  1.0
[/CIF]
.