YAgO3 crystallizes in the hexagonal P6_3cm space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 7-coordinate geometry to one O(1), three equivalent O(3), and three equivalent O(4) atoms. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to one O(2), three equivalent O(3), and three equivalent O(4) atoms. Ag(1) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form corner-sharing AgO5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Y(1) and three equivalent Ag(1) atoms to form OYAg3 trigonal pyramids that share corners with six equivalent O(3)Y3Ag tetrahedra, corners with three equivalent O(1)YAg3 trigonal pyramids, corners with three equivalent O(2)YAg3 trigonal pyramids, and edges with three equivalent O(4)Y3Ag tetrahedra. In the second O site, O(2) is bonded to one Y(2) and three equivalent Ag(1) atoms to form OYAg3 trigonal pyramids that share corners with six equivalent O(4)Y3Ag tetrahedra, corners with six equivalent O(1)YAg3 trigonal pyramids, and edges with three equivalent O(3)Y3Ag tetrahedra. In the third O site, O(3) is bonded to one Y(2), two equivalent Y(1), and one Ag(1) atom to form OY3Ag tetrahedra that share corners with four equivalent O(4)Y3Ag tetrahedra, corners with six equivalent O(3)Y3Ag tetrahedra, corners with four equivalent O(1)YAg3 trigonal pyramids, edges with three equivalent O(4)Y3Ag tetrahedra, and  an edgeedge with one O(2)YAg3 trigonal pyramid. In the fourth O site, O(4) is bonded to one Y(2), two equivalent Y(1), and one Ag(1) atom to form OY3Ag tetrahedra that share corners with four equivalent O(3)Y3Ag tetrahedra, corners with six equivalent O(4)Y3Ag tetrahedra, corners with two equivalent O(2)YAg3 trigonal pyramids, edges with three equivalent O(3)Y3Ag tetrahedra, and edges with two equivalent O(1)YAg3 trigonal pyramids.
YAgO3 crystallizes in the hexagonal P6_3cm space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 7-coordinate geometry to one O(1), three equivalent O(3), and three equivalent O(4) atoms. The Y(1)-O(1) bond length is 2.40 Å. All Y(1)-O(3) bond lengths are 2.34 Å. All Y(1)-O(4) bond lengths are 2.33 Å. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to one O(2), three equivalent O(3), and three equivalent O(4) atoms. The Y(2)-O(2) bond length is 2.30 Å. All Y(2)-O(3) bond lengths are 2.38 Å. All Y(2)-O(4) bond lengths are 2.30 Å. Ag(1) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form corner-sharing AgO5 trigonal bipyramids. The Ag(1)-O(2) bond length is 2.16 Å. The Ag(1)-O(3) bond length is 1.99 Å. The Ag(1)-O(4) bond length is 1.98 Å. Both Ag(1)-O(1) bond lengths are 2.16 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Y(1) and three equivalent Ag(1) atoms to form OYAg3 trigonal pyramids that share corners with six equivalent O(3)Y3Ag tetrahedra, corners with three equivalent O(1)YAg3 trigonal pyramids, corners with three equivalent O(2)YAg3 trigonal pyramids, and edges with three equivalent O(4)Y3Ag tetrahedra. In the second O site, O(2) is bonded to one Y(2) and three equivalent Ag(1) atoms to form OYAg3 trigonal pyramids that share corners with six equivalent O(4)Y3Ag tetrahedra, corners with six equivalent O(1)YAg3 trigonal pyramids, and edges with three equivalent O(3)Y3Ag tetrahedra. In the third O site, O(3) is bonded to one Y(2), two equivalent Y(1), and one Ag(1) atom to form OY3Ag tetrahedra that share corners with four equivalent O(4)Y3Ag tetrahedra, corners with six equivalent O(3)Y3Ag tetrahedra, corners with four equivalent O(1)YAg3 trigonal pyramids, edges with three equivalent O(4)Y3Ag tetrahedra, and  an edgeedge with one O(2)YAg3 trigonal pyramid. In the fourth O site, O(4) is bonded to one Y(2), two equivalent Y(1), and one Ag(1) atom to form OY3Ag tetrahedra that share corners with four equivalent O(3)Y3Ag tetrahedra, corners with six equivalent O(4)Y3Ag tetrahedra, corners with two equivalent O(2)YAg3 trigonal pyramids, edges with three equivalent O(3)Y3Ag tetrahedra, and edges with two equivalent O(1)YAg3 trigonal pyramids.