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FeH3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Fe3+ is bonded to twelve equivalent H1- atoms to form a mixture of face and corner-sharing FeH12 cuboctahedra. All Fe–H bond lengths are 1.85 Å. H1- is bonded in a square co-planar geometry to four equivalent Fe3+ atoms.
FeH3 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Fe3+ is bonded to twelve equivalent H1- atoms to form a mixture of edge and face-sharing FeH12 cuboctahedra. All Fe–H bond lengths are 1.84 Å. H1- is bonded to four equivalent Fe3+ atoms to form a mixture of distorted edge and corner-sharing HFe4 tetrahedra.
FeH3(CO2)3NH4 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional and consists of six ammonium molecules and one FeH3(CO2)3 framework. In the FeH3(CO2)3 framework, there are three inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Fe–O bond distances ranging from 2.16–2.18 Å. In the second Fe3+ site, Fe3+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Fe–O bond distances ranging from 2.16–2.18 Å. In the third Fe3+ site, Fe3+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Fe–O bond distances ranging from 2.16–2.18 Å. There are nine inequivalent C+1.67+ sites. In the first C+1.67+ site, C+1.67+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. In the second C+1.67+ site, C+1.67+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. In the third C+1.67+ site, C+1.67+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. In the fourth C+1.67+ site, C+1.67+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. In the fifth C+1.67+ site, C+1.67+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. In the sixth C+1.67+ site, C+1.67+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. In the seventh C+1.67+ site, C+1.67+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. In the eighth C+1.67+ site, C+1.67+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. In the ninth C+1.67+ site, C+1.67+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. There are nine inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C+1.67+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C+1.67+ atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C+1.67+ atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one C+1.67+ atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one C+1.67+ atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one C+1.67+ atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one C+1.67+ atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one C+1.67+ atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one C+1.67+ atom. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the ninth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the tenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the eleventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the twelfth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the thirteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the fourteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the fifteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the sixteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the seventeenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom. In the eighteenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+1.67+ atom.
(FeH3(CO2)3)8(CO2)6O2 crystallizes in the cubic Im-3 space group. The structure is three-dimensional and consists of six carbon dioxide molecules, two water molecules, and one FeH3(CO2)3 framework. In the FeH3(CO2)3 framework, Fe3+ is bonded in an octahedral geometry to six equivalent O2- atoms. All Fe–O bond lengths are 2.03 Å. C+2.53+ is bonded in a trigonal planar geometry to one H1+ and two equivalent O2- atoms. The C–H bond length is 1.10 Å. Both C–O bond lengths are 1.27 Å. H1+ is bonded in a single-bond geometry to one C+2.53+ atom. O2- is bonded in a bent 120 degrees geometry to one Fe3+ and one C+2.53+ atom.