AgNbO3 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 16-26°. In the second Nb site, Nb(2) is bonded to one O(1), one O(5), two equivalent O(6), and two equivalent O(7) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 16-30°. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a distorted trigonal planar geometry to one O(1), one O(4), and one O(6) atom. In the second Ag site, Ag(2) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. In the third Ag site, Ag(3) is bonded in a 8-coordinate geometry to two equivalent O(5), two equivalent O(6), and four equivalent O(7) atoms. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Nb(2), one Ag(1), and one Ag(3) atom. In the second O site, O(7) is bonded in a 3-coordinate geometry to two equivalent Nb(2) and two equivalent Ag(3) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Nb(1), one Nb(2), and one Ag(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Nb(1) and two equivalent Ag(2) atoms. In the fifth O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Nb(1) and two equivalent Ag(2) atoms. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Nb(1), one Ag(1), and one Ag(2) atom. In the seventh O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Nb(2) and two equivalent Ag(3) atoms.
AgNbO3 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 16-26°. The Nb(1)-O(1) bond length is 2.02 Å. The Nb(1)-O(2) bond length is 2.02 Å. There is one shorter (1.90 Å) and one longer (2.22 Å) Nb(1)-O(3) bond length. There is one shorter (1.90 Å) and one longer (2.20 Å) Nb(1)-O(4) bond length. In the second Nb site, Nb(2) is bonded to one O(1), one O(5), two equivalent O(6), and two equivalent O(7) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 16-30°. The Nb(2)-O(1) bond length is 2.02 Å. The Nb(2)-O(5) bond length is 2.02 Å. There is one shorter (1.90 Å) and one longer (2.23 Å) Nb(2)-O(6) bond length. There is one shorter (1.89 Å) and one longer (2.24 Å) Nb(2)-O(7) bond length. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a distorted trigonal planar geometry to one O(1), one O(4), and one O(6) atom. The Ag(1)-O(1) bond length is 2.42 Å. The Ag(1)-O(4) bond length is 2.46 Å. The Ag(1)-O(6) bond length is 2.44 Å. In the second Ag site, Ag(2) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. There is one shorter (2.53 Å) and one longer (2.66 Å) Ag(2)-O(2) bond length. Both Ag(2)-O(4) bond lengths are 2.82 Å. There are two shorter (2.53 Å) and two longer (2.69 Å) Ag(2)-O(3) bond lengths. In the third Ag site, Ag(3) is bonded in a 8-coordinate geometry to two equivalent O(5), two equivalent O(6), and four equivalent O(7) atoms. There is one shorter (2.61 Å) and one longer (2.62 Å) Ag(3)-O(5) bond length. Both Ag(3)-O(6) bond lengths are 2.75 Å. There are two shorter (2.49 Å) and two longer (2.80 Å) Ag(3)-O(7) bond lengths. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a 3-coordinate geometry to two equivalent Nb(2), one Ag(1), and one Ag(3) atom. In the second O site, O(7) is bonded in a 3-coordinate geometry to two equivalent Nb(2) and two equivalent Ag(3) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Nb(1), one Nb(2), and one Ag(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Nb(1) and two equivalent Ag(2) atoms. In the fifth O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Nb(1) and two equivalent Ag(2) atoms. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Nb(1), one Ag(1), and one Ag(2) atom. In the seventh O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Nb(2) and two equivalent Ag(3) atoms.