CoAgPO4 crystallizes in the triclinic P1 space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(8), 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,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one P(2)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(1), one O(10), one O(2), one O(3), one O(6), and one O(7) atom to form distorted 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,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. In the third Co site, Co(3) is bonded to one O(12), one O(13), one O(15), one O(4), and one O(7) atom to form CoO5 trigonal bipyramids that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-81°. In the fourth Co site, Co(4) is bonded to one O(11), one O(14), one O(16), one O(3), and one O(8) atom to form CoO5 trigonal bipyramids that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-80°. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 2-coordinate geometry to one O(15), one O(16), and one O(9) atom. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one O(10), one O(15), one O(16), and one O(6) atom. In the third Ag site, Ag(3) is bonded in a 4-coordinate geometry to one O(12), one O(13), one O(4), and one O(7) atom. In the fourth Ag site, Ag(4) is bonded in a 4-coordinate geometry to one O(11), one O(14), one O(3), and one O(8) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(7) 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 Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 26-59°. In the second P site, P(2) is bonded to one O(2), one O(4), one O(6), and one O(8) 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 Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, and  an edgeedge with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 28-57°. In the third P site, P(3) is bonded to one O(11), one O(13), one O(15), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(4)O5 trigonal bipyramid, and corners with two equivalent Co(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 49°. In the fourth P site, P(4) is bonded to one O(10), one O(12), one O(14), and one O(16) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(3)O5 trigonal bipyramid, and corners with two equivalent Co(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 46°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Co(2), one Co(4), one Ag(4), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Co(1), one Co(3), one Ag(3), and one P(2) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Co(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Co(2), one Ag(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Co(2), one Co(3), one Ag(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(1), one Co(4), one Ag(4), and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Co(1), one Ag(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Co(2), one Ag(2), and one P(4) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Co(4), one Ag(4), and one P(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Co(3), one Ag(3), and one P(4) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Co(3), one Ag(3), and one P(3) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Co(4), one Ag(4), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Co(3), one Ag(1), one Ag(2), and one P(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Co(4), one Ag(1), one Ag(2), and one P(4) atom.
CoAgPO4 crystallizes in the triclinic P1 space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(8), 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,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one P(2)O4 tetrahedra. The Co(1)-O(1) bond length is 2.10 Å. The Co(1)-O(2) bond length is 2.12 Å. The Co(1)-O(4) bond length is 2.37 Å. The Co(1)-O(5) bond length is 2.06 Å. The Co(1)-O(8) bond length is 2.15 Å. The Co(1)-O(9) bond length is 2.04 Å. In the second Co site, Co(2) is bonded to one O(1), one O(10), one O(2), one O(3), one O(6), and one O(7) atom to form distorted 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,  a cornercorner with one Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid,  an edgeedge with one Co(1)O6 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. The Co(2)-O(1) bond length is 2.11 Å. The Co(2)-O(10) bond length is 2.08 Å. The Co(2)-O(2) bond length is 2.14 Å. The Co(2)-O(3) bond length is 2.39 Å. The Co(2)-O(6) bond length is 2.04 Å. The Co(2)-O(7) bond length is 2.16 Å. In the third Co site, Co(3) is bonded to one O(12), one O(13), one O(15), one O(4), and one O(7) atom to form CoO5 trigonal bipyramids that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-81°. The Co(3)-O(12) bond length is 1.99 Å. The Co(3)-O(13) bond length is 2.03 Å. The Co(3)-O(15) bond length is 2.10 Å. The Co(3)-O(4) bond length is 2.06 Å. The Co(3)-O(7) bond length is 2.05 Å. In the fourth Co site, Co(4) is bonded to one O(11), one O(14), one O(16), one O(3), and one O(8) atom to form CoO5 trigonal bipyramids that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-80°. The Co(4)-O(11) bond length is 1.98 Å. The Co(4)-O(14) bond length is 2.07 Å. The Co(4)-O(16) bond length is 2.11 Å. The Co(4)-O(3) bond length is 2.05 Å. The Co(4)-O(8) bond length is 2.02 Å. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 2-coordinate geometry to one O(15), one O(16), and one O(9) atom. The Ag(1)-O(15) bond length is 2.28 Å. The Ag(1)-O(16) bond length is 2.71 Å. The Ag(1)-O(9) bond length is 2.29 Å. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one O(10), one O(15), one O(16), and one O(6) atom. The Ag(2)-O(10) bond length is 2.28 Å. The Ag(2)-O(15) bond length is 2.74 Å. The Ag(2)-O(16) bond length is 2.27 Å. The Ag(2)-O(6) bond length is 2.66 Å. In the third Ag site, Ag(3) is bonded in a 4-coordinate geometry to one O(12), one O(13), one O(4), and one O(7) atom. The Ag(3)-O(12) bond length is 2.50 Å. The Ag(3)-O(13) bond length is 2.22 Å. The Ag(3)-O(4) bond length is 2.27 Å. The Ag(3)-O(7) bond length is 2.72 Å. In the fourth Ag site, Ag(4) is bonded in a 4-coordinate geometry to one O(11), one O(14), one O(3), and one O(8) atom. The Ag(4)-O(11) bond length is 2.56 Å. The Ag(4)-O(14) bond length is 2.20 Å. The Ag(4)-O(3) bond length is 2.26 Å. The Ag(4)-O(8) bond length is 2.73 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(7) 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 Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 26-59°. The P(1)-O(1) bond length is 1.56 Å. The P(1)-O(3) bond length is 1.59 Å. The P(1)-O(5) bond length is 1.52 Å. The P(1)-O(7) bond length is 1.58 Å. In the second P site, P(2) is bonded to one O(2), one O(4), one O(6), and one O(8) 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 Co(3)O5 trigonal bipyramid,  a cornercorner with one Co(4)O5 trigonal bipyramid, and  an edgeedge with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 28-57°. The P(2)-O(2) bond length is 1.55 Å. The P(2)-O(4) bond length is 1.58 Å. The P(2)-O(6) bond length is 1.53 Å. The P(2)-O(8) bond length is 1.58 Å. In the third P site, P(3) is bonded to one O(11), one O(13), one O(15), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(4)O5 trigonal bipyramid, and corners with two equivalent Co(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 49°. The P(3)-O(11) bond length is 1.53 Å. The P(3)-O(13) bond length is 1.57 Å. The P(3)-O(15) bond length is 1.57 Å. The P(3)-O(9) bond length is 1.57 Å. In the fourth P site, P(4) is bonded to one O(10), one O(12), one O(14), and one O(16) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(3)O5 trigonal bipyramid, and corners with two equivalent Co(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 46°. The P(4)-O(10) bond length is 1.56 Å. The P(4)-O(12) bond length is 1.54 Å. The P(4)-O(14) bond length is 1.57 Å. The P(4)-O(16) bond length is 1.57 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Co(2), one Co(4), one Ag(4), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Co(1), one Co(3), one Ag(3), and one P(2) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Co(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Co(2), one Ag(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Co(2), one Co(3), one Ag(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(1), one Co(4), one Ag(4), and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Co(1), one Ag(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Co(2), one Ag(2), and one P(4) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Co(4), one Ag(4), and one P(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Co(3), one Ag(3), and one P(4) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Co(3), one Ag(3), and one P(3) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Co(4), one Ag(4), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Co(3), one Ag(1), one Ag(2), and one P(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Co(4), one Ag(1), one Ag(2), and one P(4) atom.