The structure described by Li2Sn3(P2O7)2 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded in a 3-coordinate geometry to one O(3), one O(5), and one O(7) atom. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra and corners with four equivalent P(1)O4 tetrahedra. In the second Sn site, Sn(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(5), and one O(7) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-60°. In the second P site, P(2) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Sn(1), one Sn(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sn(2) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Sn(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Sn(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Li(1), one Sn(2), and one P(2) atom. is represented by the CIF card [CIF]
data_Li2Sn3(P2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.201
_cell_length_b   8.003
_cell_length_c   11.200
_cell_angle_alpha   71.017
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   695.094
_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  0.434  0.706  0.821  1.0
  Li  Li1  1  0.066  0.706  0.321  1.0
  Li  Li2  1  0.934  0.294  0.679  1.0
  Li  Li3  1  0.566  0.294  0.179  1.0
  Sn  Sn4  1  0.000  0.000  0.500  1.0
  Sn  Sn5  1  0.378  0.788  0.504  1.0
  Sn  Sn6  1  0.500  0.000  0.000  1.0
  Sn  Sn7  1  0.122  0.788  0.004  1.0
  Sn  Sn8  1  0.878  0.212  0.996  1.0
  Sn  Sn9  1  0.622  0.212  0.496  1.0
  P  P10  1  0.792  0.863  0.809  1.0
  P  P11  1  0.708  0.863  0.309  1.0
  P  P12  1  0.042  0.605  0.774  1.0
  P  P13  1  0.542  0.395  0.726  1.0
  P  P14  1  0.458  0.605  0.274  1.0
  P  P15  1  0.958  0.395  0.226  1.0
  P  P16  1  0.292  0.137  0.691  1.0
  P  P17  1  0.208  0.137  0.191  1.0
  O  O18  1  0.300  0.006  0.826  1.0
  O  O19  1  0.904  0.925  0.899  1.0
  O  O20  1  0.620  0.825  0.863  1.0
  O  O21  1  0.200  0.006  0.326  1.0
  O  O22  1  0.596  0.925  0.399  1.0
  O  O23  1  0.867  0.675  0.810  1.0
  O  O24  1  0.169  0.635  0.868  1.0
  O  O25  1  0.880  0.825  0.363  1.0
  O  O26  1  0.082  0.709  0.637  1.0
  O  O27  1  0.509  0.591  0.703  1.0
  O  O28  1  0.633  0.675  0.310  1.0
  O  O29  1  0.331  0.635  0.368  1.0
  O  O30  1  0.418  0.709  0.137  1.0
  O  O31  1  0.009  0.409  0.797  1.0
  O  O32  1  0.991  0.591  0.203  1.0
  O  O33  1  0.582  0.291  0.863  1.0
  O  O34  1  0.669  0.365  0.632  1.0
  O  O35  1  0.366  0.325  0.690  1.0
  O  O36  1  0.491  0.409  0.297  1.0
  O  O37  1  0.918  0.291  0.363  1.0
  O  O38  1  0.120  0.175  0.637  1.0
  O  O39  1  0.831  0.365  0.132  1.0
  O  O40  1  0.134  0.325  0.190  1.0
  O  O41  1  0.404  0.075  0.601  1.0
  O  O42  1  0.800  0.994  0.674  1.0
  O  O43  1  0.380  0.175  0.137  1.0
  O  O44  1  0.096  0.075  0.101  1.0
  O  O45  1  0.700  0.994  0.174  1.0
[/CIF]
.
The structure described by Li2Sn3(P2O7)2 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded in a 3-coordinate geometry to one O(3), one O(5), and one O(7) atom. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra and corners with four equivalent P(1)O4 tetrahedra. In the second Sn site, Sn(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(5), and one O(7) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-60°. In the second P site, P(2) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Sn(1), one Sn(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sn(2) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Sn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Sn(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Sn(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Li(1), one Sn(2), and one P(2) atom. is represented by the CIF card [CIF]
data_Li2Sn3(P2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.201
_cell_length_b   8.003
_cell_length_c   11.200
_cell_angle_alpha   71.017
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   695.094
_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  0.434  0.706  0.821  1.0
  Li  Li1  1  0.066  0.706  0.321  1.0
  Li  Li2  1  0.934  0.294  0.679  1.0
  Li  Li3  1  0.566  0.294  0.179  1.0
  Sn  Sn4  1  0.000  0.000  0.500  1.0
  Sn  Sn5  1  0.378  0.788  0.504  1.0
  Sn  Sn6  1  0.500  0.000  0.000  1.0
  Sn  Sn7  1  0.122  0.788  0.004  1.0
  Sn  Sn8  1  0.878  0.212  0.996  1.0
  Sn  Sn9  1  0.622  0.212  0.496  1.0
  P  P10  1  0.792  0.863  0.809  1.0
  P  P11  1  0.708  0.863  0.309  1.0
  P  P12  1  0.042  0.605  0.774  1.0
  P  P13  1  0.542  0.395  0.726  1.0
  P  P14  1  0.458  0.605  0.274  1.0
  P  P15  1  0.958  0.395  0.226  1.0
  P  P16  1  0.292  0.137  0.691  1.0
  P  P17  1  0.208  0.137  0.191  1.0
  O  O18  1  0.300  0.006  0.826  1.0
  O  O19  1  0.904  0.925  0.899  1.0
  O  O20  1  0.620  0.825  0.863  1.0
  O  O21  1  0.200  0.006  0.326  1.0
  O  O22  1  0.596  0.925  0.399  1.0
  O  O23  1  0.867  0.675  0.810  1.0
  O  O24  1  0.169  0.635  0.868  1.0
  O  O25  1  0.880  0.825  0.363  1.0
  O  O26  1  0.082  0.709  0.637  1.0
  O  O27  1  0.509  0.591  0.703  1.0
  O  O28  1  0.633  0.675  0.310  1.0
  O  O29  1  0.331  0.635  0.368  1.0
  O  O30  1  0.418  0.709  0.137  1.0
  O  O31  1  0.009  0.409  0.797  1.0
  O  O32  1  0.991  0.591  0.203  1.0
  O  O33  1  0.582  0.291  0.863  1.0
  O  O34  1  0.669  0.365  0.632  1.0
  O  O35  1  0.366  0.325  0.690  1.0
  O  O36  1  0.491  0.409  0.297  1.0
  O  O37  1  0.918  0.291  0.363  1.0
  O  O38  1  0.120  0.175  0.637  1.0
  O  O39  1  0.831  0.365  0.132  1.0
  O  O40  1  0.134  0.325  0.190  1.0
  O  O41  1  0.404  0.075  0.601  1.0
  O  O42  1  0.800  0.994  0.674  1.0
  O  O43  1  0.380  0.175  0.137  1.0
  O  O44  1  0.096  0.075  0.101  1.0
  O  O45  1  0.700  0.994  0.174  1.0
[/CIF]
.