(Fe(OH)3)4H2O crystallizes in the triclinic P-1 space group. The structure consists of one water molecule inside a Fe(OH)3 framework. In the Fe(OH)3 framework, there are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 41-44°. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(6) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 41-42°. In the third Fe site, Fe(3) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 41-44°. In the fourth Fe site, Fe(4) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 41-42°. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(4) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(5) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Fe(1), one Fe(2), and one H(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Fe(3), one Fe(4), and one H(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Fe(1), one Fe(4), and one H(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Fe(2), one Fe(3), and one H(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Fe(1), one Fe(3), and one H(5) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Fe(2), one Fe(4), and one H(6) atom.
(Fe(OH)3)4H2O crystallizes in the triclinic P-1 space group. The structure consists of one water molecule inside a Fe(OH)3 framework. In the Fe(OH)3 framework, there are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 41-44°. Both Fe(1)-O(1) bond lengths are 2.13 Å. Both Fe(1)-O(3) bond lengths are 2.06 Å. Both Fe(1)-O(5) bond lengths are 2.06 Å. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(6) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 41-42°. Both Fe(2)-O(1) bond lengths are 2.09 Å. Both Fe(2)-O(4) bond lengths are 2.03 Å. Both Fe(2)-O(6) bond lengths are 2.10 Å. In the third Fe site, Fe(3) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 41-44°. Both Fe(3)-O(2) bond lengths are 2.06 Å. Both Fe(3)-O(4) bond lengths are 2.06 Å. Both Fe(3)-O(5) bond lengths are 2.10 Å. In the fourth Fe site, Fe(4) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 41-42°. Both Fe(4)-O(2) bond lengths are 2.18 Å. Both Fe(4)-O(3) bond lengths are 2.02 Å. Both Fe(4)-O(6) bond lengths are 2.03 Å. There are six inequivalent H sites. In the first H site, 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. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. The H(2)-O(2) bond length is 1.01 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) atom. The H(3)-O(3) bond length is 1.00 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(4) atom. The H(4)-O(4) bond length is 0.99 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(5) atom. The H(5)-O(5) bond length is 1.00 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. The H(6)-O(6) bond length is 1.01 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Fe(1), one Fe(2), and one H(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Fe(3), one Fe(4), and one H(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Fe(1), one Fe(4), and one H(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Fe(2), one Fe(3), and one H(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Fe(1), one Fe(3), and one H(5) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Fe(2), one Fe(4), and one H(6) atom.