MgFeHO2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 7-coordinate geometry to three equivalent H(1), one O(1), and three equivalent O(2) atoms. Fe(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form edge-sharing FeO6 octahedra. H(1) is bonded in a trigonal non-coplanar geometry to three equivalent Mg(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1) and three equivalent Fe(1) atoms. In the second O site, O(2) is bonded to three equivalent Mg(1) and three equivalent Fe(1) atoms to form edge-sharing OMg3Fe3 octahedra.
MgFeHO2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 7-coordinate geometry to three equivalent H(1), one O(1), and three equivalent O(2) atoms. There are two shorter (1.92 Å) and one longer (1.93 Å) Mg(1)-H(1) bond length. The Mg(1)-O(1) bond length is 2.52 Å. There are a spread of Mg(1)-O(2) bond distances ranging from 2.31-2.34 Å. 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 1.98 Å. There is one shorter (2.17 Å) and two longer (2.18 Å) Fe(1)-O(2) bond lengths. H(1) is bonded in a trigonal non-coplanar geometry to three equivalent Mg(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1) and three equivalent Fe(1) atoms. In the second O site, O(2) is bonded to three equivalent Mg(1) and three equivalent Fe(1) atoms to form edge-sharing OMg3Fe3 octahedra.