FeH3(CO2)3NH4 crystallizes in the monoclinic C2 space group. The structure consists of four ammonium molecules inside a FeH3(CO2)3 framework. In the FeH3(CO2)3 framework, Fe(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one H(1), one O(1), and one O(3) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one H(2) and two equivalent O(2) atoms. In the third C site, C(3) is bonded in a trigonal planar geometry to one H(3), one O(4), and one O(6) atom. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one H(4) and two equivalent O(5) atoms. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(4) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(3) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(4) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(3) atom.
FeH3(CO2)3NH4 crystallizes in the monoclinic C2 space group. The structure consists of four ammonium molecules inside a FeH3(CO2)3 framework. In the FeH3(CO2)3 framework, Fe(1) is bonded in an octahedral geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The Fe(1)-O(1) bond length is 2.15 Å. The Fe(1)-O(2) bond length is 2.20 Å. The Fe(1)-O(3) bond length is 2.18 Å. The Fe(1)-O(4) bond length is 2.14 Å. The Fe(1)-O(5) bond length is 2.21 Å. The Fe(1)-O(6) bond length is 2.18 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one H(1), one O(1), and one O(3) atom. The C(1)-H(1) bond length is 1.11 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(3) bond length is 1.28 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one H(2) and two equivalent O(2) atoms. The C(2)-H(2) bond length is 1.11 Å. Both C(2)-O(2) bond lengths are 1.27 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one H(3), one O(4), and one O(6) atom. The C(3)-H(3) bond length is 1.11 Å. The C(3)-O(4) bond length is 1.28 Å. The C(3)-O(6) bond length is 1.27 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one H(4) and two equivalent O(5) atoms. The C(4)-H(4) bond length is 1.11 Å. Both C(4)-O(5) bond lengths are 1.27 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(4) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(3) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(4) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Fe(1) and one C(3) atom.