AgFeO2 crystallizes in the trigonal R3m space group. Fe(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form edge-sharing FeO6 octahedra. Ag(1) is bonded in a 4-coordinate geometry to one O(1) and three equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Fe(1) and one Ag(1) atom to form distorted corner-sharing OFe3Ag tetrahedra. In the second O site, O(2) is bonded in a 6-coordinate geometry to three equivalent Fe(1) and three equivalent Ag(1) atoms.
AgFeO2 crystallizes in the trigonal R3m space group. Fe(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form edge-sharing FeO6 octahedra. All Fe(1)-O(1) bond lengths are 1.95 Å. All Fe(1)-O(2) bond lengths are 1.99 Å. Ag(1) is bonded in a 4-coordinate geometry to one O(1) and three equivalent O(2) atoms. The Ag(1)-O(1) bond length is 2.18 Å. All Ag(1)-O(2) bond lengths are 2.57 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Fe(1) and one Ag(1) atom to form distorted corner-sharing OFe3Ag tetrahedra. In the second O site, O(2) is bonded in a 6-coordinate geometry to three equivalent Fe(1) and three equivalent Ag(1) atoms.