The structure described by Nd4CrS7 crystallizes in the monoclinic P2_1 space group. There are four inequivalent Nd sites. In the first Nd site, Nd(1) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms to form face-sharing NdS6 octahedra. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to one S(2), one S(3), one S(4), one S(7), two equivalent S(1), and two equivalent S(5) atoms. In the third Nd site, Nd(3) is bonded in a 8-coordinate geometry to one S(1), one S(3), one S(5), one S(7), two equivalent S(2), and two equivalent S(6) atoms. In the fourth Nd site, Nd(4) is bonded in a 8-coordinate geometry to one S(1), one S(2), one S(6), one S(7), two equivalent S(3), and two equivalent S(4) atoms. Cr(1) is bonded in a tetrahedral geometry to one S(4), one S(5), one S(6), and one S(7) atom. There are seven inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to one Nd(3), one Nd(4), two equivalent Nd(1), and two equivalent Nd(2) atoms. In the second S site, S(2) is bonded in a 6-coordinate geometry to one Nd(2), one Nd(4), two equivalent Nd(1), and two equivalent Nd(3) atoms. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Nd(2), one Nd(3), two equivalent Nd(1), and two equivalent Nd(4) atoms. In the fourth S site, S(4) is bonded in a rectangular see-saw-like geometry to one Nd(2), two equivalent Nd(4), and one Cr(1) atom. In the fifth S site, S(5) is bonded in a rectangular see-saw-like geometry to one Nd(3), two equivalent Nd(2), and one Cr(1) atom. In the sixth S site, S(6) is bonded in a rectangular see-saw-like geometry to one Nd(4), two equivalent Nd(3), and one Cr(1) atom. In the seventh S site, S(7) is bonded in a distorted tetrahedral geometry to one Nd(2), one Nd(3), one Nd(4), and one Cr(1) atom. is represented by the CIF card [CIF]
data_Nd4CrS7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.477
_cell_length_b   10.224
_cell_length_c   10.234
_cell_angle_alpha   120.015
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   586.866
_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
  Nd  Nd0  1  0.478  1.000  0.000  1.0
  Nd  Nd1  1  0.978  0.000  1.000  1.0
  Nd  Nd2  1  0.252  0.253  0.396  1.0
  Nd  Nd3  1  0.252  0.604  0.857  1.0
  Nd  Nd4  1  0.252  0.142  0.746  1.0
  Nd  Nd5  1  0.752  0.747  0.604  1.0
  Nd  Nd6  1  0.752  0.396  0.143  1.0
  Nd  Nd7  1  0.752  0.858  0.254  1.0
  Cr  Cr8  1  0.835  0.332  0.667  1.0
  Cr  Cr9  1  0.335  0.668  0.333  1.0
  S  S10  1  0.725  0.163  0.256  1.0
  S  S11  1  0.726  0.744  0.907  1.0
  S  S12  1  0.726  0.094  0.836  1.0
  S  S13  1  0.225  0.837  0.744  1.0
  S  S14  1  0.226  0.256  0.093  1.0
  S  S15  1  0.226  0.906  0.164  1.0
  S  S16  1  0.993  0.100  0.513  1.0
  S  S17  1  0.993  0.487  0.588  1.0
  S  S18  1  0.993  0.413  0.899  1.0
  S  S19  1  0.493  0.900  0.487  1.0
  S  S20  1  0.493  0.513  0.412  1.0
  S  S21  1  0.493  0.587  0.101  1.0
  S  S22  1  0.464  0.334  0.667  1.0
  S  S23  1  0.964  0.666  0.333  1.0
[/CIF]
.
The structure described by Nd4CrS7 crystallizes in the monoclinic P2_1 space group. There are four inequivalent Nd sites. In the first Nd site, Nd(1) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms to form face-sharing NdS6 octahedra. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to one S(2), one S(3), one S(4), one S(7), two equivalent S(1), and two equivalent S(5) atoms. In the third Nd site, Nd(3) is bonded in a 8-coordinate geometry to one S(1), one S(3), one S(5), one S(7), two equivalent S(2), and two equivalent S(6) atoms. In the fourth Nd site, Nd(4) is bonded in a 8-coordinate geometry to one S(1), one S(2), one S(6), one S(7), two equivalent S(3), and two equivalent S(4) atoms. Cr(1) is bonded in a tetrahedral geometry to one S(4), one S(5), one S(6), and one S(7) atom. There are seven inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to one Nd(3), one Nd(4), two equivalent Nd(1), and two equivalent Nd(2) atoms. In the second S site, S(2) is bonded in a 6-coordinate geometry to one Nd(2), one Nd(4), two equivalent Nd(1), and two equivalent Nd(3) atoms. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Nd(2), one Nd(3), two equivalent Nd(1), and two equivalent Nd(4) atoms. In the fourth S site, S(4) is bonded in a rectangular see-saw-like geometry to one Nd(2), two equivalent Nd(4), and one Cr(1) atom. In the fifth S site, S(5) is bonded in a rectangular see-saw-like geometry to one Nd(3), two equivalent Nd(2), and one Cr(1) atom. In the sixth S site, S(6) is bonded in a rectangular see-saw-like geometry to one Nd(4), two equivalent Nd(3), and one Cr(1) atom. In the seventh S site, S(7) is bonded in a distorted tetrahedral geometry to one Nd(2), one Nd(3), one Nd(4), and one Cr(1) atom. is represented by the CIF card [CIF]
data_Nd4CrS7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.477
_cell_length_b   10.224
_cell_length_c   10.234
_cell_angle_alpha   120.015
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   586.866
_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
  Nd  Nd0  1  0.478  1.000  0.000  1.0
  Nd  Nd1  1  0.978  0.000  1.000  1.0
  Nd  Nd2  1  0.252  0.253  0.396  1.0
  Nd  Nd3  1  0.252  0.604  0.857  1.0
  Nd  Nd4  1  0.252  0.142  0.746  1.0
  Nd  Nd5  1  0.752  0.747  0.604  1.0
  Nd  Nd6  1  0.752  0.396  0.143  1.0
  Nd  Nd7  1  0.752  0.858  0.254  1.0
  Cr  Cr8  1  0.835  0.332  0.667  1.0
  Cr  Cr9  1  0.335  0.668  0.333  1.0
  S  S10  1  0.725  0.163  0.256  1.0
  S  S11  1  0.726  0.744  0.907  1.0
  S  S12  1  0.726  0.094  0.836  1.0
  S  S13  1  0.225  0.837  0.744  1.0
  S  S14  1  0.226  0.256  0.093  1.0
  S  S15  1  0.226  0.906  0.164  1.0
  S  S16  1  0.993  0.100  0.513  1.0
  S  S17  1  0.993  0.487  0.588  1.0
  S  S18  1  0.993  0.413  0.899  1.0
  S  S19  1  0.493  0.900  0.487  1.0
  S  S20  1  0.493  0.513  0.412  1.0
  S  S21  1  0.493  0.587  0.101  1.0
  S  S22  1  0.464  0.334  0.667  1.0
  S  S23  1  0.964  0.666  0.333  1.0
[/CIF]
.