The structure described by SnP2O7 crystallizes in the triclinic P-1 space group. Sn(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form SnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with three equivalent Sn(1)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-48°. In the second P site, P(2) is bonded to one O(1), one O(3), one O(4), and one O(7) atom to form PO4 tetrahedra that share corners with three equivalent Sn(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-42°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(2) 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 bent 150 degrees geometry to one Sn(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(2) atom. is represented by the CIF card [CIF]
data_SnP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.128
_cell_length_b   6.755
_cell_length_c   8.367
_cell_angle_alpha   68.990
_cell_angle_beta   88.535
_cell_angle_gamma   88.620
_symmetry_Int_Tables_number   1
_cell_volume   270.424
_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
  Sn  Sn0  1  0.242  0.210  0.731  1.0
  Sn  Sn1  1  0.758  0.790  0.269  1.0
  P  P2  1  0.246  0.114  0.166  1.0
  P  P3  1  0.277  0.453  0.310  1.0
  P  P4  1  0.723  0.547  0.690  1.0
  P  P5  1  0.754  0.886  0.834  1.0
  O  O6  1  0.177  0.292  0.477  1.0
  O  O7  1  0.035  0.942  0.777  1.0
  O  O8  1  0.095  0.642  0.236  1.0
  O  O9  1  0.287  0.342  0.173  1.0
  O  O10  1  0.302  0.141  0.983  1.0
  O  O11  1  0.437  0.962  0.288  1.0
  O  O12  1  0.446  0.481  0.679  1.0
  O  O13  1  0.554  0.519  0.321  1.0
  O  O14  1  0.563  0.038  0.712  1.0
  O  O15  1  0.698  0.859  0.017  1.0
  O  O16  1  0.713  0.658  0.827  1.0
  O  O17  1  0.905  0.358  0.764  1.0
  O  O18  1  0.965  0.058  0.223  1.0
  O  O19  1  0.823  0.708  0.523  1.0
[/CIF]
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The structure described by SnP2O7 crystallizes in the triclinic P-1 space group. Sn(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form SnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with three equivalent Sn(1)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-48°. In the second P site, P(2) is bonded to one O(1), one O(3), one O(4), and one O(7) atom to form PO4 tetrahedra that share corners with three equivalent Sn(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-42°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(2) 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 bent 150 degrees geometry to one Sn(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(2) atom. is represented by the CIF card [CIF]
data_SnP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.128
_cell_length_b   6.755
_cell_length_c   8.367
_cell_angle_alpha   68.990
_cell_angle_beta   88.535
_cell_angle_gamma   88.620
_symmetry_Int_Tables_number   1
_cell_volume   270.424
_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
  Sn  Sn0  1  0.242  0.210  0.731  1.0
  Sn  Sn1  1  0.758  0.790  0.269  1.0
  P  P2  1  0.246  0.114  0.166  1.0
  P  P3  1  0.277  0.453  0.310  1.0
  P  P4  1  0.723  0.547  0.690  1.0
  P  P5  1  0.754  0.886  0.834  1.0
  O  O6  1  0.177  0.292  0.477  1.0
  O  O7  1  0.035  0.942  0.777  1.0
  O  O8  1  0.095  0.642  0.236  1.0
  O  O9  1  0.287  0.342  0.173  1.0
  O  O10  1  0.302  0.141  0.983  1.0
  O  O11  1  0.437  0.962  0.288  1.0
  O  O12  1  0.446  0.481  0.679  1.0
  O  O13  1  0.554  0.519  0.321  1.0
  O  O14  1  0.563  0.038  0.712  1.0
  O  O15  1  0.698  0.859  0.017  1.0
  O  O16  1  0.713  0.658  0.827  1.0
  O  O17  1  0.905  0.358  0.764  1.0
  O  O18  1  0.965  0.058  0.223  1.0
  O  O19  1  0.823  0.708  0.523  1.0
[/CIF]
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