The compound described by CaWP2O7 crystallizes in the triclinic P-1 space group. Ca(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and two equivalent O(4) atoms. W(1) is bonded to one O(1), one O(2), one O(3), one O(5), and one O(7) atom to form distorted WO5 square pyramids that share corners with two equivalent P(2)O4 tetrahedra and corners with three equivalent P(1)O4 tetrahedra. 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(6) atom to form PO4 tetrahedra that share corners with three equivalent W(1)O5 square pyramids and  a cornercorner with one P(2)O4 tetrahedra. 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 corners with two equivalent W(1)O5 square pyramids and  a cornercorner with one P(1)O4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ca(1), one W(1), and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ca(1), one W(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Ca(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Ca(1), one W(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one P(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Ca(1), one W(1), and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaP2WO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.001
_cell_length_b   6.793
_cell_length_c   7.912
_cell_angle_alpha   80.262
_cell_angle_beta   86.587
_cell_angle_gamma   69.763
_symmetry_Int_Tables_number   1
_cell_volume   298.230
_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
  Ca  Ca0  1  0.311  0.677  0.653  1.0
  Ca  Ca1  1  0.689  0.323  0.347  1.0
  P  P2  1  0.163  0.660  0.119  1.0
  P  P3  1  0.837  0.340  0.881  1.0
  P  P4  1  0.221  0.220  0.617  1.0
  P  P5  1  0.779  0.780  0.383  1.0
  W  W6  1  0.284  0.127  0.166  1.0
  W  W7  1  0.716  0.873  0.834  1.0
  O  O8  1  0.082  0.717  0.930  1.0
  O  O9  1  0.918  0.283  0.070  1.0
  O  O10  1  0.257  0.816  0.179  1.0
  O  O11  1  0.743  0.184  0.821  1.0
  O  O12  1  0.343  0.432  0.157  1.0
  O  O13  1  0.657  0.568  0.843  1.0
  O  O14  1  0.624  0.646  0.449  1.0
  O  O15  1  0.376  0.354  0.551  1.0
  O  O16  1  0.052  0.206  0.489  1.0
  O  O17  1  0.948  0.794  0.511  1.0
  O  O18  1  0.073  0.346  0.771  1.0
  O  O19  1  0.630  0.007  0.295  1.0
  O  O20  1  0.370  0.993  0.705  1.0
  O  O21  1  0.927  0.654  0.229  1.0
[/CIF]
.
The compound described by CaWP2O7 crystallizes in the triclinic P-1 space group. Ca(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and two equivalent O(4) atoms. W(1) is bonded to one O(1), one O(2), one O(3), one O(5), and one O(7) atom to form distorted WO5 square pyramids that share corners with two equivalent P(2)O4 tetrahedra and corners with three equivalent P(1)O4 tetrahedra. 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(6) atom to form PO4 tetrahedra that share corners with three equivalent W(1)O5 square pyramids and  a cornercorner with one P(2)O4 tetrahedra. 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 corners with two equivalent W(1)O5 square pyramids and  a cornercorner with one P(1)O4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ca(1), one W(1), and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ca(1), one W(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Ca(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Ca(1), one W(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one P(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Ca(1), one W(1), and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaP2WO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.001
_cell_length_b   6.793
_cell_length_c   7.912
_cell_angle_alpha   80.262
_cell_angle_beta   86.587
_cell_angle_gamma   69.763
_symmetry_Int_Tables_number   1
_cell_volume   298.230
_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
  Ca  Ca0  1  0.311  0.677  0.653  1.0
  Ca  Ca1  1  0.689  0.323  0.347  1.0
  P  P2  1  0.163  0.660  0.119  1.0
  P  P3  1  0.837  0.340  0.881  1.0
  P  P4  1  0.221  0.220  0.617  1.0
  P  P5  1  0.779  0.780  0.383  1.0
  W  W6  1  0.284  0.127  0.166  1.0
  W  W7  1  0.716  0.873  0.834  1.0
  O  O8  1  0.082  0.717  0.930  1.0
  O  O9  1  0.918  0.283  0.070  1.0
  O  O10  1  0.257  0.816  0.179  1.0
  O  O11  1  0.743  0.184  0.821  1.0
  O  O12  1  0.343  0.432  0.157  1.0
  O  O13  1  0.657  0.568  0.843  1.0
  O  O14  1  0.624  0.646  0.449  1.0
  O  O15  1  0.376  0.354  0.551  1.0
  O  O16  1  0.052  0.206  0.489  1.0
  O  O17  1  0.948  0.794  0.511  1.0
  O  O18  1  0.073  0.346  0.771  1.0
  O  O19  1  0.630  0.007  0.295  1.0
  O  O20  1  0.370  0.993  0.705  1.0
  O  O21  1  0.927  0.654  0.229  1.0
[/CIF]
.