WCoP2O8 crystallizes in the monoclinic Pm space group. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(5), two equivalent O(11), and two equivalent O(9) atoms to form WO6 octahedra that share corners with four equivalent Co(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. In the second W site, W(2) is bonded to one O(2), one O(6), two equivalent O(10), and two equivalent O(12) atoms to form WO6 octahedra that share corners with four equivalent Co(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-53°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(4), one O(8), two equivalent O(10), and two equivalent O(12) atoms to form distorted CoO6 octahedra that share corners with four equivalent W(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-53°. In the second Co site, Co(2) is bonded to one O(3), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form distorted CoO6 octahedra that share corners with four equivalent W(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), and two equivalent O(9) atoms to form PO4 tetrahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent W(1)O6 octahedra, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. In the second P site, P(2) is bonded to one O(1), one O(4), and two equivalent O(10) atoms to form PO4 tetrahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, and  an edgeedge with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-53°. In the third P site, P(3) is bonded to one O(5), one O(8), and two equivalent O(11) atoms to form PO4 tetrahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and  an edgeedge with one W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. In the fourth P site, P(4) is bonded to one O(6), one O(7), and two equivalent O(12) atoms to form PO4 tetrahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and  an edgeedge with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-58°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one W(1) and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one W(2) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one W(1) and one P(3) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one W(2) and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Co(2) and one P(4) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one W(1), one Co(2), and one P(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one W(2), one Co(1), and one P(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one W(1), one Co(2), and one P(3) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one W(2), one Co(1), and one P(4) atom.
WCoP2O8 crystallizes in the monoclinic Pm space group. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(5), two equivalent O(11), and two equivalent O(9) atoms to form WO6 octahedra that share corners with four equivalent Co(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. The W(1)-O(1) bond length is 2.12 Å. The W(1)-O(5) bond length is 2.08 Å. Both W(1)-O(11) bond lengths are 2.14 Å. Both W(1)-O(9) bond lengths are 2.05 Å. In the second W site, W(2) is bonded to one O(2), one O(6), two equivalent O(10), and two equivalent O(12) atoms to form WO6 octahedra that share corners with four equivalent Co(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-53°. The W(2)-O(2) bond length is 2.12 Å. The W(2)-O(6) bond length is 2.08 Å. Both W(2)-O(10) bond lengths are 2.05 Å. Both W(2)-O(12) bond lengths are 2.14 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(4), one O(8), two equivalent O(10), and two equivalent O(12) atoms to form distorted CoO6 octahedra that share corners with four equivalent W(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-53°. The Co(1)-O(4) bond length is 2.00 Å. The Co(1)-O(8) bond length is 1.97 Å. Both Co(1)-O(10) bond lengths are 2.41 Å. Both Co(1)-O(12) bond lengths are 2.13 Å. In the second Co site, Co(2) is bonded to one O(3), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form distorted CoO6 octahedra that share corners with four equivalent W(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. The Co(2)-O(3) bond length is 2.00 Å. The Co(2)-O(7) bond length is 1.98 Å. Both Co(2)-O(11) bond lengths are 2.18 Å. Both Co(2)-O(9) bond lengths are 2.34 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), and two equivalent O(9) atoms to form PO4 tetrahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent W(1)O6 octahedra, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. The P(1)-O(2) bond length is 1.53 Å. The P(1)-O(3) bond length is 1.52 Å. Both P(1)-O(9) bond lengths are 1.60 Å. In the second P site, P(2) is bonded to one O(1), one O(4), and two equivalent O(10) atoms to form PO4 tetrahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, and  an edgeedge with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-53°. The P(2)-O(1) bond length is 1.53 Å. The P(2)-O(4) bond length is 1.51 Å. Both P(2)-O(10) bond lengths are 1.60 Å. In the third P site, P(3) is bonded to one O(5), one O(8), and two equivalent O(11) atoms to form PO4 tetrahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and  an edgeedge with one W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. The P(3)-O(5) bond length is 1.53 Å. The P(3)-O(8) bond length is 1.51 Å. Both P(3)-O(11) bond lengths are 1.60 Å. In the fourth P site, P(4) is bonded to one O(6), one O(7), and two equivalent O(12) atoms to form PO4 tetrahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, and  an edgeedge with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-58°. The P(4)-O(6) bond length is 1.52 Å. The P(4)-O(7) bond length is 1.51 Å. Both P(4)-O(12) bond lengths are 1.60 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one W(1) and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one W(2) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one W(1) and one P(3) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one W(2) and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Co(2) and one P(4) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one W(1), one Co(2), and one P(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one W(2), one Co(1), and one P(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one W(1), one Co(2), and one P(3) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one W(2), one Co(1), and one P(4) atom.