The structure described by LiSm2Cr2O8 crystallizes in the monoclinic C2 space group. Li(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Cr(2)O4 tetrahedra and  an edgeedge with one Cr(1)O4 tetrahedra. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form CrO4 tetrahedra that share  an edgeedge with one Li(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form CrO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sm(1), one Sm(2), and one Cr(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sm(1), one Sm(2), and one Cr(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Li(1), one Sm(1), one Sm(2), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(1), one Sm(1), one Sm(2), and one Cr(2) atom. is represented by the CIF file [CIF]
data_LiSm2Cr2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.185
_cell_length_b   6.185
_cell_length_c   6.114
_cell_angle_alpha   105.750
_cell_angle_beta   105.750
_cell_angle_gamma   117.185
_symmetry_Int_Tables_number   1
_cell_volume   177.610
_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
  Li  Li0  1  0.105  0.895  0.750  1.0
  Sm  Sm1  1  0.390  0.610  0.750  1.0
  Sm  Sm2  1  0.623  0.377  0.250  1.0
  Cr  Cr3  1  0.863  0.137  0.750  1.0
  Cr  Cr4  1  0.126  0.874  0.250  1.0
  O  O5  1  0.315  0.239  0.430  1.0
  O  O6  1  0.867  0.294  0.562  1.0
  O  O7  1  0.214  0.278  0.916  1.0
  O  O8  1  0.288  0.866  0.042  1.0
  O  O9  1  0.134  0.712  0.458  1.0
  O  O10  1  0.722  0.786  0.584  1.0
  O  O11  1  0.761  0.685  0.070  1.0
  O  O12  1  0.706  0.133  0.938  1.0
[/CIF]
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The structure described by LiSm2Cr2O8 crystallizes in the monoclinic C2 space group. Li(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Cr(2)O4 tetrahedra and  an edgeedge with one Cr(1)O4 tetrahedra. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form CrO4 tetrahedra that share  an edgeedge with one Li(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form CrO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sm(1), one Sm(2), and one Cr(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sm(1), one Sm(2), and one Cr(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Li(1), one Sm(1), one Sm(2), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(1), one Sm(1), one Sm(2), and one Cr(2) atom. is represented by the CIF file [CIF]
data_LiSm2Cr2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.185
_cell_length_b   6.185
_cell_length_c   6.114
_cell_angle_alpha   105.750
_cell_angle_beta   105.750
_cell_angle_gamma   117.185
_symmetry_Int_Tables_number   1
_cell_volume   177.610
_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
  Li  Li0  1  0.105  0.895  0.750  1.0
  Sm  Sm1  1  0.390  0.610  0.750  1.0
  Sm  Sm2  1  0.623  0.377  0.250  1.0
  Cr  Cr3  1  0.863  0.137  0.750  1.0
  Cr  Cr4  1  0.126  0.874  0.250  1.0
  O  O5  1  0.315  0.239  0.430  1.0
  O  O6  1  0.867  0.294  0.562  1.0
  O  O7  1  0.214  0.278  0.916  1.0
  O  O8  1  0.288  0.866  0.042  1.0
  O  O9  1  0.134  0.712  0.458  1.0
  O  O10  1  0.722  0.786  0.584  1.0
  O  O11  1  0.761  0.685  0.070  1.0
  O  O12  1  0.706  0.133  0.938  1.0
[/CIF]
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