The material described by Sm2V(Fe8N)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a bent 120 degrees geometry to one Fe(5), one Fe(9), two equivalent Fe(3), two equivalent Fe(7), two equivalent Fe(8), and two equivalent N(1) atoms. In the second Sm site, Sm(2) is bonded in a bent 120 degrees geometry to one V(1), one Fe(7), one Fe(9), two equivalent Fe(3), two equivalent Fe(5), two equivalent Fe(8), and two equivalent N(1) atoms. V(1) is bonded in a 14-coordinate geometry to one Sm(2), one Fe(10), one Fe(5), one Fe(9), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Fe(8) atoms. There are ten inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a single-bond geometry to one V(1), one Fe(3), one Fe(7), one Fe(8), one Fe(9), and one N(1) atom. In the second Fe site, Fe(2) is bonded in a single-bond geometry to one V(1), one Fe(3), one Fe(5), one Fe(8), one Fe(9), and one N(1) atom. In the third Fe site, Fe(3) is bonded to one Sm(1), one Sm(2), one V(1), one Fe(1), one Fe(10), one Fe(2), one Fe(4), one Fe(5), one Fe(6), one Fe(7), and two equivalent Fe(8) atoms to form distorted FeSm2VFe9 cuboctahedra that share  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(5)Sm3VFe8 cuboctahedra, corners with two equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(9)Sm2VFe9 cuboctahedra, corners with four equivalent N(1)Sm2Fe4 octahedra,  an edgeedge with one Fe(3)Sm2VFe9 cuboctahedra, edges with two equivalent Fe(8)Sm2VFe9 cuboctahedra, edges with two equivalent N(1)Sm2Fe4 octahedra,  a faceface with one Fe(3)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(9)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(7)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(5)Sm3VFe8 cuboctahedra. The corner-sharing octahedral tilt angles range from 25-28°. In the fourth Fe site, Fe(4) is bonded in a single-bond geometry to one V(1), one Fe(3), one Fe(7), one Fe(8), one Fe(9), and one N(1) atom. In the fifth Fe site, Fe(5) is bonded to one Sm(1), two equivalent Sm(2), one V(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(6), and two equivalent Fe(8) atoms to form FeSm3VFe8 cuboctahedra that share corners with two equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3VFe8 cuboctahedra, corners with three equivalent Fe(9)Sm2VFe9 cuboctahedra, corners with four equivalent N(1)Sm2Fe4 octahedra,  an edgeedge with one Fe(9)Sm2VFe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(8)Sm2VFe9 cuboctahedra,  a faceface with one Fe(9)Sm2VFe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, faces with four equivalent Fe(3)Sm2VFe9 cuboctahedra, and faces with two equivalent N(1)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 64-70°. In the sixth Fe site, Fe(6) is bonded in a single-bond geometry to one Fe(3), one Fe(5), one Fe(8), one Fe(9), and one N(1) atom. In the seventh Fe site, Fe(7) is bonded to one Sm(2), two equivalent Sm(1), one Fe(10), two equivalent Fe(1), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Fe(8) atoms to form FeSm3Fe9 cuboctahedra that share corners with two equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3VFe8 cuboctahedra, corners with three equivalent Fe(9)Sm2VFe9 cuboctahedra, corners with four equivalent N(1)Sm2Fe4 octahedra,  an edgeedge with one Fe(9)Sm2VFe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3VFe8 cuboctahedra, edges with two equivalent Fe(8)Sm2VFe9 cuboctahedra,  a faceface with one Fe(9)Sm2VFe9 cuboctahedra,  a faceface with one Fe(5)Sm3VFe8 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, faces with four equivalent Fe(3)Sm2VFe9 cuboctahedra, and faces with two equivalent N(1)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 63-69°. In the eighth Fe site, Fe(8) is bonded to one Sm(1), one Sm(2), one V(1), one Fe(1), one Fe(10), one Fe(2), one Fe(4), one Fe(5), one Fe(6), one Fe(7), and two equivalent Fe(3) atoms to form distorted FeSm2VFe9 cuboctahedra that share  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(5)Sm3VFe8 cuboctahedra, corners with two equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(9)Sm2VFe9 cuboctahedra, corners with two equivalent N(1)Sm2Fe4 octahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3VFe8 cuboctahedra, edges with two equivalent Fe(3)Sm2VFe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3VFe8 cuboctahedra, faces with two equivalent Fe(3)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(9)Sm2VFe9 cuboctahedra, and faces with two equivalent N(1)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 44-46°. In the ninth Fe site, Fe(9) is bonded to one Sm(1), one Sm(2), one V(1), one Fe(10), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(4), and two equivalent Fe(6) atoms to form distorted FeSm2VFe9 cuboctahedra that share corners with three equivalent Fe(7)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(5)Sm3VFe8 cuboctahedra, corners with four equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with four equivalent Fe(8)Sm2VFe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3VFe8 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3VFe8 cuboctahedra, faces with four equivalent Fe(3)Sm2VFe9 cuboctahedra, faces with four equivalent Fe(8)Sm2VFe9 cuboctahedra, and faces with four equivalent N(1)Sm2Fe4 octahedra. In the tenth Fe site, Fe(10) is bonded in a distorted single-bond geometry to one V(1), one Fe(7), one Fe(9), two equivalent Fe(3), and two equivalent Fe(8) atoms. N(1) is bonded to one Sm(1), one Sm(2), one Fe(1), one Fe(2), one Fe(4), and one Fe(6) atom to form NSm2Fe4 octahedra that share corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3VFe8 cuboctahedra, corners with four equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent N(1)Sm2Fe4 octahedra, edges with two equivalent Fe(3)Sm2VFe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3VFe8 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, and faces with two equivalent Fe(9)Sm2VFe9 cuboctahedra. The corner-sharing octahedral tilt angles are 61°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm2V(Fe8N)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.497
_cell_length_b   6.497
_cell_length_c   6.566
_cell_angle_alpha   83.575
_cell_angle_beta   83.575
_cell_angle_gamma   82.776
_symmetry_Int_Tables_number   1
_cell_volume   271.878
_cell_formula_units_Z   1
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
  Sm  Sm0  1  0.659  0.659  0.658  1.0
  Sm  Sm1  1  0.347  0.347  0.347  1.0
  V  V2  1  0.091  0.091  0.092  1.0
  Fe  Fe3  1  0.714  0.001  0.281  1.0
  Fe  Fe4  1  0.996  0.282  0.715  1.0
  Fe  Fe5  1  0.292  0.708  0.999  1.0
  Fe  Fe6  1  0.001  0.714  0.281  1.0
  Fe  Fe7  1  0.708  0.292  0.999  1.0
  Fe  Fe8  1  0.282  0.996  0.715  1.0
  Fe  Fe9  1  0.344  0.856  0.339  1.0
  Fe  Fe10  1  0.856  0.344  0.339  1.0
  Fe  Fe11  1  0.343  0.343  0.855  1.0
  Fe  Fe12  1  0.655  0.145  0.661  1.0
  Fe  Fe13  1  0.145  0.655  0.661  1.0
  Fe  Fe14  1  0.658  0.658  0.144  1.0
  Fe  Fe15  1  0.001  0.500  1.000  1.0
  Fe  Fe16  1  0.500  0.001  1.000  1.0
  Fe  Fe17  1  0.999  0.999  0.501  1.0
  Fe  Fe18  1  0.909  0.909  0.910  1.0
  N  N19  1  0.500  0.000  0.501  1.0
  N  N20  1  0.000  0.500  0.501  1.0
[/CIF]
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The material described by Sm2V(Fe8N)2 crystallizes in the monoclinic Cm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a bent 120 degrees geometry to one Fe(5), one Fe(9), two equivalent Fe(3), two equivalent Fe(7), two equivalent Fe(8), and two equivalent N(1) atoms. In the second Sm site, Sm(2) is bonded in a bent 120 degrees geometry to one V(1), one Fe(7), one Fe(9), two equivalent Fe(3), two equivalent Fe(5), two equivalent Fe(8), and two equivalent N(1) atoms. V(1) is bonded in a 14-coordinate geometry to one Sm(2), one Fe(10), one Fe(5), one Fe(9), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Fe(8) atoms. There are ten inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a single-bond geometry to one V(1), one Fe(3), one Fe(7), one Fe(8), one Fe(9), and one N(1) atom. In the second Fe site, Fe(2) is bonded in a single-bond geometry to one V(1), one Fe(3), one Fe(5), one Fe(8), one Fe(9), and one N(1) atom. In the third Fe site, Fe(3) is bonded to one Sm(1), one Sm(2), one V(1), one Fe(1), one Fe(10), one Fe(2), one Fe(4), one Fe(5), one Fe(6), one Fe(7), and two equivalent Fe(8) atoms to form distorted FeSm2VFe9 cuboctahedra that share  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(5)Sm3VFe8 cuboctahedra, corners with two equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(9)Sm2VFe9 cuboctahedra, corners with four equivalent N(1)Sm2Fe4 octahedra,  an edgeedge with one Fe(3)Sm2VFe9 cuboctahedra, edges with two equivalent Fe(8)Sm2VFe9 cuboctahedra, edges with two equivalent N(1)Sm2Fe4 octahedra,  a faceface with one Fe(3)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(9)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(7)Sm3Fe9 cuboctahedra, and faces with two equivalent Fe(5)Sm3VFe8 cuboctahedra. The corner-sharing octahedral tilt angles range from 25-28°. In the fourth Fe site, Fe(4) is bonded in a single-bond geometry to one V(1), one Fe(3), one Fe(7), one Fe(8), one Fe(9), and one N(1) atom. In the fifth Fe site, Fe(5) is bonded to one Sm(1), two equivalent Sm(2), one V(1), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(6), and two equivalent Fe(8) atoms to form FeSm3VFe8 cuboctahedra that share corners with two equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3VFe8 cuboctahedra, corners with three equivalent Fe(9)Sm2VFe9 cuboctahedra, corners with four equivalent N(1)Sm2Fe4 octahedra,  an edgeedge with one Fe(9)Sm2VFe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra, edges with two equivalent Fe(8)Sm2VFe9 cuboctahedra,  a faceface with one Fe(9)Sm2VFe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, faces with four equivalent Fe(3)Sm2VFe9 cuboctahedra, and faces with two equivalent N(1)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 64-70°. In the sixth Fe site, Fe(6) is bonded in a single-bond geometry to one Fe(3), one Fe(5), one Fe(8), one Fe(9), and one N(1) atom. In the seventh Fe site, Fe(7) is bonded to one Sm(2), two equivalent Sm(1), one Fe(10), two equivalent Fe(1), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Fe(8) atoms to form FeSm3Fe9 cuboctahedra that share corners with two equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3VFe8 cuboctahedra, corners with three equivalent Fe(9)Sm2VFe9 cuboctahedra, corners with four equivalent N(1)Sm2Fe4 octahedra,  an edgeedge with one Fe(9)Sm2VFe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3VFe8 cuboctahedra, edges with two equivalent Fe(8)Sm2VFe9 cuboctahedra,  a faceface with one Fe(9)Sm2VFe9 cuboctahedra,  a faceface with one Fe(5)Sm3VFe8 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, faces with four equivalent Fe(3)Sm2VFe9 cuboctahedra, and faces with two equivalent N(1)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 63-69°. In the eighth Fe site, Fe(8) is bonded to one Sm(1), one Sm(2), one V(1), one Fe(1), one Fe(10), one Fe(2), one Fe(4), one Fe(5), one Fe(6), one Fe(7), and two equivalent Fe(3) atoms to form distorted FeSm2VFe9 cuboctahedra that share  a cornercorner with one Fe(7)Sm3Fe9 cuboctahedra,  a cornercorner with one Fe(5)Sm3VFe8 cuboctahedra, corners with two equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(9)Sm2VFe9 cuboctahedra, corners with two equivalent N(1)Sm2Fe4 octahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3VFe8 cuboctahedra, edges with two equivalent Fe(3)Sm2VFe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3VFe8 cuboctahedra, faces with two equivalent Fe(3)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, faces with two equivalent Fe(9)Sm2VFe9 cuboctahedra, and faces with two equivalent N(1)Sm2Fe4 octahedra. The corner-sharing octahedral tilt angles range from 44-46°. In the ninth Fe site, Fe(9) is bonded to one Sm(1), one Sm(2), one V(1), one Fe(10), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(4), and two equivalent Fe(6) atoms to form distorted FeSm2VFe9 cuboctahedra that share corners with three equivalent Fe(7)Sm3Fe9 cuboctahedra, corners with three equivalent Fe(5)Sm3VFe8 cuboctahedra, corners with four equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with four equivalent Fe(8)Sm2VFe9 cuboctahedra,  an edgeedge with one Fe(7)Sm3Fe9 cuboctahedra,  an edgeedge with one Fe(5)Sm3VFe8 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3VFe8 cuboctahedra, faces with four equivalent Fe(3)Sm2VFe9 cuboctahedra, faces with four equivalent Fe(8)Sm2VFe9 cuboctahedra, and faces with four equivalent N(1)Sm2Fe4 octahedra. In the tenth Fe site, Fe(10) is bonded in a distorted single-bond geometry to one V(1), one Fe(7), one Fe(9), two equivalent Fe(3), and two equivalent Fe(8) atoms. N(1) is bonded to one Sm(1), one Sm(2), one Fe(1), one Fe(2), one Fe(4), and one Fe(6) atom to form NSm2Fe4 octahedra that share corners with two equivalent Fe(8)Sm2VFe9 cuboctahedra, corners with two equivalent Fe(7)Sm3Fe9 cuboctahedra, corners with two equivalent Fe(5)Sm3VFe8 cuboctahedra, corners with four equivalent Fe(3)Sm2VFe9 cuboctahedra, corners with two equivalent N(1)Sm2Fe4 octahedra, edges with two equivalent Fe(3)Sm2VFe9 cuboctahedra,  a faceface with one Fe(7)Sm3Fe9 cuboctahedra,  a faceface with one Fe(5)Sm3VFe8 cuboctahedra, faces with two equivalent Fe(8)Sm2VFe9 cuboctahedra, and faces with two equivalent Fe(9)Sm2VFe9 cuboctahedra. The corner-sharing octahedral tilt angles are 61°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm2V(Fe8N)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.497
_cell_length_b   6.497
_cell_length_c   6.566
_cell_angle_alpha   83.575
_cell_angle_beta   83.575
_cell_angle_gamma   82.776
_symmetry_Int_Tables_number   1
_cell_volume   271.878
_cell_formula_units_Z   1
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
  Sm  Sm0  1  0.659  0.659  0.658  1.0
  Sm  Sm1  1  0.347  0.347  0.347  1.0
  V  V2  1  0.091  0.091  0.092  1.0
  Fe  Fe3  1  0.714  0.001  0.281  1.0
  Fe  Fe4  1  0.996  0.282  0.715  1.0
  Fe  Fe5  1  0.292  0.708  0.999  1.0
  Fe  Fe6  1  0.001  0.714  0.281  1.0
  Fe  Fe7  1  0.708  0.292  0.999  1.0
  Fe  Fe8  1  0.282  0.996  0.715  1.0
  Fe  Fe9  1  0.344  0.856  0.339  1.0
  Fe  Fe10  1  0.856  0.344  0.339  1.0
  Fe  Fe11  1  0.343  0.343  0.855  1.0
  Fe  Fe12  1  0.655  0.145  0.661  1.0
  Fe  Fe13  1  0.145  0.655  0.661  1.0
  Fe  Fe14  1  0.658  0.658  0.144  1.0
  Fe  Fe15  1  0.001  0.500  1.000  1.0
  Fe  Fe16  1  0.500  0.001  1.000  1.0
  Fe  Fe17  1  0.999  0.999  0.501  1.0
  Fe  Fe18  1  0.909  0.909  0.910  1.0
  N  N19  1  0.500  0.000  0.501  1.0
  N  N20  1  0.000  0.500  0.501  1.0
[/CIF]
.