MoFeHSeO7 crystallizes in the monoclinic C2/c space group. Mo(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Fe(1) is bonded to one O(4), one O(6), one O(7), one O(8), and two equivalent O(5) atoms to form edge-sharing FeO6 octahedra. H(1) is bonded in a single-bond geometry to one O(1) atom. Se(1) is bonded in a trigonal non-coplanar geometry to one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to two equivalent Mo(1) and two equivalent H(1) atoms. In the second O site, O(2) is bonded in a single-bond geometry to one Mo(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent Mo(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to one Mo(1) and one Fe(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mo(1) and two equivalent Fe(1) atoms. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mo(1), one Fe(1), and one Se(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one Se(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Fe(1) and one Se(1) atom.
MoFeHSeO7 crystallizes in the monoclinic C2/c space group. Mo(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The Mo(1)-O(1) bond length is 2.45 Å. The Mo(1)-O(2) bond length is 1.73 Å. The Mo(1)-O(3) bond length is 1.96 Å. The Mo(1)-O(4) bond length is 1.77 Å. The Mo(1)-O(5) bond length is 1.91 Å. The Mo(1)-O(6) bond length is 2.34 Å. Fe(1) is bonded to one O(4), one O(6), one O(7), one O(8), and two equivalent O(5) atoms to form edge-sharing FeO6 octahedra. The Fe(1)-O(4) bond length is 2.04 Å. The Fe(1)-O(6) bond length is 2.06 Å. The Fe(1)-O(7) bond length is 2.03 Å. The Fe(1)-O(8) bond length is 1.95 Å. There is one shorter (2.03 Å) and one longer (2.08 Å) Fe(1)-O(5) bond length. H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.99 Å. Se(1) is bonded in a trigonal non-coplanar geometry to one O(6), one O(7), and one O(8) atom. The Se(1)-O(6) bond length is 1.78 Å. The Se(1)-O(7) bond length is 1.73 Å. The Se(1)-O(8) bond length is 1.71 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to two equivalent Mo(1) and two equivalent H(1) atoms. In the second O site, O(2) is bonded in a single-bond geometry to one Mo(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent Mo(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to one Mo(1) and one Fe(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mo(1) and two equivalent Fe(1) atoms. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mo(1), one Fe(1), and one Se(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one Se(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Fe(1) and one Se(1) atom.