Fe3(OH)8Fe(OH)2H2O2H2O crystallizes in the triclinic P-1 space group. The structure consists of one iron hydroxide (fe(oh)2) molecule, one water molecule, and two water molecules inside a Fe3(OH)8 framework. In the Fe3(OH)8 framework, there are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 6-coordinate geometry to two equivalent H(5), two equivalent O(1), and two equivalent O(6) atoms. In the second Fe site, Fe(2) is bonded to two equivalent H(1), two equivalent H(4), and two equivalent O(1) atoms to form corner-sharing FeH4O2 octahedra. In the third Fe site, Fe(4) is bonded to two equivalent H(4), two equivalent H(5), two equivalent O(4), and two equivalent O(6) atoms to form distorted corner-sharing FeH4O4 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 16°. There are four inequivalent H sites. In the first H site, H(1) is bonded in a 2-coordinate geometry to one Fe(2), one O(1), and one O(5) atom. In the second H site, H(4) is bonded in a single-bond geometry to one Fe(2), one Fe(4), and one O(4) atom. In the third H site, H(5) is bonded in a single-bond geometry to one Fe(1), one Fe(4), and one O(5) atom. In the fourth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Fe(1), one Fe(2), and one H(1) atom. In the second O site, O(4) is bonded in a single-bond geometry to one Fe(4) and one H(4) atom. In the third O site, O(5) is bonded in a 2-coordinate geometry to one H(1) and one H(5) atom. In the fourth O site, O(6) is bonded in a distorted single-bond geometry to one Fe(1), one Fe(4), and one H(6) atom.
Fe3(OH)8Fe(OH)2H2O2H2O crystallizes in the triclinic P-1 space group. The structure consists of one iron hydroxide (fe(oh)2) molecule, one water molecule, and two water molecules inside a Fe3(OH)8 framework. In the Fe3(OH)8 framework, there are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 6-coordinate geometry to two equivalent H(5), two equivalent O(1), and two equivalent O(6) atoms. Both Fe(1)-H(5) bond lengths are 2.16 Å. Both Fe(1)-O(1) bond lengths are 2.08 Å. Both Fe(1)-O(6) bond lengths are 2.21 Å. In the second Fe site, Fe(2) is bonded to two equivalent H(1), two equivalent H(4), and two equivalent O(1) atoms to form corner-sharing FeH4O2 octahedra. Both Fe(2)-H(1) bond lengths are 1.85 Å. Both Fe(2)-H(4) bond lengths are 1.85 Å. Both Fe(2)-O(1) bond lengths are 2.15 Å. In the third Fe site, Fe(4) is bonded to two equivalent H(4), two equivalent H(5), two equivalent O(4), and two equivalent O(6) atoms to form distorted corner-sharing FeH4O4 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 16°. Both Fe(4)-H(4) bond lengths are 2.02 Å. Both Fe(4)-H(5) bond lengths are 2.16 Å. Both Fe(4)-O(4) bond lengths are 2.20 Å. Both Fe(4)-O(6) bond lengths are 2.17 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a 2-coordinate geometry to one Fe(2), one O(1), and one O(5) atom. The H(1)-O(1) bond length is 1.44 Å. The H(1)-O(5) bond length is 1.54 Å. In the second H site, H(4) is bonded in a single-bond geometry to one Fe(2), one Fe(4), and one O(4) atom. The H(4)-O(4) bond length is 0.77 Å. In the third H site, H(5) is bonded in a single-bond geometry to one Fe(1), one Fe(4), and one O(5) atom. The H(5)-O(5) bond length is 1.05 Å. In the fourth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. The H(6)-O(6) bond length is 1.38 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Fe(1), one Fe(2), and one H(1) atom. In the second O site, O(4) is bonded in a single-bond geometry to one Fe(4) and one H(4) atom. In the third O site, O(5) is bonded in a 2-coordinate geometry to one H(1) and one H(5) atom. In the fourth O site, O(6) is bonded in a distorted single-bond geometry to one Fe(1), one Fe(4), and one H(6) atom.