Co2Zn(P2O7)2 crystallizes in the monoclinic Pc space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one Zn(1)O5 trigonal bipyramid. In the second Co site, Co(2) is bonded to one O(10), one O(13), one O(14), one O(3), one O(5), and one O(9) atom to form distorted CoO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Zn(1)O5 trigonal bipyramid. Zn(1) is bonded to one O(11), one O(13), one O(2), one O(3), and one O(8) atom to form ZnO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Co(2)O6 octahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(2), one O(4), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a cornercorner with one Zn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-58°. In the second P site, P(2) is bonded to one O(1), one O(3), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(1)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent Zn(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 31-47°. In the third P site, P(3) is bonded to one O(1), one O(11), one O(12), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one Zn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 50-56°. In the fourth P site, P(4) is bonded to one O(13), one O(14), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one Zn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 14-52°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Zn(1) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(2), one Zn(1), and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one P(1) and one P(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(3) atom. In the sixth O site, O(6) is bonded in a linear geometry to one Co(1) and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Co(1), one Zn(1), and one P(2) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one P(1) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Co(2) and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Co(1), one Zn(1), and one P(3) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one P(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Co(2), one Zn(1), and one P(4) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Co(2) and one P(4) atom.
Co2Zn(P2O7)2 crystallizes in the monoclinic Pc space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one Zn(1)O5 trigonal bipyramid. The Co(1)-O(11) bond length is 2.04 Å. The Co(1)-O(5) bond length is 2.22 Å. The Co(1)-O(6) bond length is 1.94 Å. The Co(1)-O(7) bond length is 1.90 Å. The Co(1)-O(8) bond length is 2.05 Å. The Co(1)-O(9) bond length is 2.10 Å. In the second Co site, Co(2) is bonded to one O(10), one O(13), one O(14), one O(3), one O(5), and one O(9) atom to form distorted CoO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Zn(1)O5 trigonal bipyramid. The Co(2)-O(10) bond length is 1.86 Å. The Co(2)-O(13) bond length is 2.11 Å. The Co(2)-O(14) bond length is 1.92 Å. The Co(2)-O(3) bond length is 2.28 Å. The Co(2)-O(5) bond length is 2.09 Å. The Co(2)-O(9) bond length is 2.05 Å. Zn(1) is bonded to one O(11), one O(13), one O(2), one O(3), and one O(8) atom to form ZnO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one Co(2)O6 octahedra. The Zn(1)-O(11) bond length is 2.06 Å. The Zn(1)-O(13) bond length is 2.07 Å. The Zn(1)-O(2) bond length is 1.94 Å. The Zn(1)-O(3) bond length is 2.15 Å. The Zn(1)-O(8) bond length is 2.11 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(2), one O(4), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a cornercorner with one Zn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-58°. The P(1)-O(10) bond length is 1.53 Å. The P(1)-O(2) bond length is 1.50 Å. The P(1)-O(4) bond length is 1.60 Å. The P(1)-O(9) bond length is 1.56 Å. In the second P site, P(2) is bonded to one O(1), one O(3), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(1)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent Zn(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 31-47°. The P(2)-O(1) bond length is 1.57 Å. The P(2)-O(3) bond length is 1.53 Å. The P(2)-O(7) bond length is 1.54 Å. The P(2)-O(8) bond length is 1.56 Å. In the third P site, P(3) is bonded to one O(1), one O(11), one O(12), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Co(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one Zn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 50-56°. The P(3)-O(1) bond length is 1.63 Å. The P(3)-O(11) bond length is 1.57 Å. The P(3)-O(12) bond length is 1.47 Å. The P(3)-O(5) bond length is 1.58 Å. In the fourth P site, P(4) is bonded to one O(13), one O(14), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one Zn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 14-52°. The P(4)-O(13) bond length is 1.55 Å. The P(4)-O(14) bond length is 1.52 Å. The P(4)-O(4) bond length is 1.61 Å. The P(4)-O(6) bond length is 1.51 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Zn(1) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Co(2), one Zn(1), and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one P(1) and one P(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(3) atom. In the sixth O site, O(6) is bonded in a linear geometry to one Co(1) and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Co(1), one Zn(1), and one P(2) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one P(1) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Co(2) and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Co(1), one Zn(1), and one P(3) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one P(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Co(2), one Zn(1), and one P(4) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Co(2) and one P(4) atom.