The structure described by Li2SmCPO7 crystallizes in the monoclinic P2_1/m space group. Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(6) atom. Sm(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(6), two equivalent O(4), and two equivalent O(5) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. P(1) is bonded in a tetrahedral geometry to one O(5), one O(6), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Li(1) and one C(1) atom. In the second O site, O(2) is bonded to two equivalent Li(1), one Sm(1), and one C(1) atom to form distorted edge-sharing OLi2SmC trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Li(1), one Sm(1), and one C(1) atom to form distorted edge-sharing OLi2SmC trigonal pyramids. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Sm(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Sm(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Li(1), one Sm(1), and one P(1) atom. is represented by the CIF file [CIF]
data_Li2SmPCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.878
_cell_length_b   4.972
_cell_length_c   9.259
_cell_angle_alpha   87.029
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   316.236
_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
  Li  Li0  1  0.520  0.798  0.804  1.0
  Li  Li1  1  0.980  0.798  0.804  1.0
  Li  Li2  1  0.480  0.202  0.196  1.0
  Li  Li3  1  0.020  0.202  0.196  1.0
  Sm  Sm4  1  0.250  0.257  0.627  1.0
  Sm  Sm5  1  0.750  0.743  0.373  1.0
  P  P6  1  0.750  0.266  0.599  1.0
  P  P7  1  0.250  0.734  0.401  1.0
  C  C8  1  0.250  0.258  0.932  1.0
  C  C9  1  0.750  0.742  0.068  1.0
  O  O10  1  0.750  0.729  0.932  1.0
  O  O11  1  0.250  0.028  0.868  1.0
  O  O12  1  0.250  0.476  0.844  1.0
  O  O13  1  0.933  0.127  0.665  1.0
  O  O14  1  0.567  0.127  0.665  1.0
  O  O15  1  0.250  0.760  0.570  1.0
  O  O16  1  0.750  0.574  0.620  1.0
  O  O17  1  0.250  0.426  0.380  1.0
  O  O18  1  0.750  0.240  0.430  1.0
  O  O19  1  0.433  0.873  0.335  1.0
  O  O20  1  0.067  0.873  0.335  1.0
  O  O21  1  0.750  0.524  0.156  1.0
  O  O22  1  0.750  0.972  0.132  1.0
  O  O23  1  0.250  0.271  0.068  1.0
[/CIF]
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The structure described by Li2SmCPO7 crystallizes in the monoclinic P2_1/m space group. Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(6) atom. Sm(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(6), two equivalent O(4), and two equivalent O(5) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. P(1) is bonded in a tetrahedral geometry to one O(5), one O(6), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Li(1) and one C(1) atom. In the second O site, O(2) is bonded to two equivalent Li(1), one Sm(1), and one C(1) atom to form distorted edge-sharing OLi2SmC trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Li(1), one Sm(1), and one C(1) atom to form distorted edge-sharing OLi2SmC trigonal pyramids. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Sm(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Sm(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Li(1), one Sm(1), and one P(1) atom. is represented by the CIF file [CIF]
data_Li2SmPCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.878
_cell_length_b   4.972
_cell_length_c   9.259
_cell_angle_alpha   87.029
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   316.236
_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
  Li  Li0  1  0.520  0.798  0.804  1.0
  Li  Li1  1  0.980  0.798  0.804  1.0
  Li  Li2  1  0.480  0.202  0.196  1.0
  Li  Li3  1  0.020  0.202  0.196  1.0
  Sm  Sm4  1  0.250  0.257  0.627  1.0
  Sm  Sm5  1  0.750  0.743  0.373  1.0
  P  P6  1  0.750  0.266  0.599  1.0
  P  P7  1  0.250  0.734  0.401  1.0
  C  C8  1  0.250  0.258  0.932  1.0
  C  C9  1  0.750  0.742  0.068  1.0
  O  O10  1  0.750  0.729  0.932  1.0
  O  O11  1  0.250  0.028  0.868  1.0
  O  O12  1  0.250  0.476  0.844  1.0
  O  O13  1  0.933  0.127  0.665  1.0
  O  O14  1  0.567  0.127  0.665  1.0
  O  O15  1  0.250  0.760  0.570  1.0
  O  O16  1  0.750  0.574  0.620  1.0
  O  O17  1  0.250  0.426  0.380  1.0
  O  O18  1  0.750  0.240  0.430  1.0
  O  O19  1  0.433  0.873  0.335  1.0
  O  O20  1  0.067  0.873  0.335  1.0
  O  O21  1  0.750  0.524  0.156  1.0
  O  O22  1  0.750  0.972  0.132  1.0
  O  O23  1  0.250  0.271  0.068  1.0
[/CIF]
.