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Materials Data on FeP2CO8 by Materials Project

(Fe2CP4O14)2(CO)2O2 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of two formaldehyde molecules; one water water molecule; and one Fe2CP4O14 sheet oriented in the (0, 1, 0) direction. In the Fe2CP4O14 sheet, there are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Fe–O bond distances ranging from 1.93–2.24 Å. In the second Fe2+ site, Fe2+ is bonded in a trigonal bipyramidal geometry to five O2- atoms. There are a spread of Fe–O bond distances ranging from 1.94–2.08 Å. C4+ is bonded in a single-bond geometry to one O2- atom. The C–O bond length is 1.24 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of P–O bond distances ranging from 1.46–1.53 Å. In the second P5+ site, P5+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.49 Å) and one longer (1.52 Å) P–O bond length. In the third P5+ site, P5+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.52 Å) and two longer (1.54 Å) P–O bond length. In the fourth P5+ site, P5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of P–O bond distances ranging from 1.48–1.59 Å. There are fourteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe2+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe2+ and one P5+ atom. In the third O2- site, O2- is bonded in an L-shaped geometry to one Fe2+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe2+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe2+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe2+ and one C4+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe2+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe2+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one P5+ atom. In the tenth O2- site, O2- is bonded in an L-shaped geometry to one Fe2+ and one P5+ atom. In the eleventh O2- site, O2- is bonded in an L-shaped geometry to one Fe2+ and one P5+ atom. In the twelfth O2- site, O2- is bonded in an L-shaped geometry to one Fe2+ and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a single-bond geometry to one P5+ and one O2- atom. The O–O bond length is 2.41 Å. In the fourteenth O2- site, O2- is bonded in a single-bond geometry to one O2- atom.

36 MATERIALS SCIENCE↗

Materials Data on Fe2PCO7 by Materials Project

Fe2CPO7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Fe+2.50+ sites. In the first Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with four equivalent PO4 tetrahedra and edges with three FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.82–2.17 Å. In the second Fe+2.50+ site, Fe+2.50+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with three equivalent PO4 tetrahedra and edges with two equivalent FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.89–2.12 Å. C4+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.25 Å) and one longer (1.28 Å) C–O bond length. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with seven FeO6 octahedra. The corner-sharing octahedra tilt angles range from 38–57°. There are a spread of P–O bond distances ranging from 1.52–1.58 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to two Fe+2.50+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two Fe+2.50+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Fe+2.50+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Fe+2.50+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two Fe+2.50+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to two Fe+2.50+ and one C4+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Fe+2.50+ and one C4+ atom.

36 MATERIALS SCIENCE↗

Materials Data on FeP4(C2O5)2 by Materials Project

Fe(CO)4(P2O3)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four tetraphosphorus hexaoxide molecules and four Fe(CO)4 clusters. In each Fe(CO)4 cluster, Fe2+ is bonded in a trigonal pyramidal geometry to four C+0.50- atoms. There are a spread of Fe–C bond distances ranging from 1.78–1.81 Å. There are four inequivalent C+0.50- sites. In the first C+0.50- site, C+0.50- is bonded in a linear geometry to one Fe2+ and one O2- atom. The C–O bond length is 1.16 Å. In the second C+0.50- site, C+0.50- is bonded in a linear geometry to one Fe2+ and one O2- atom. The C–O bond length is 1.16 Å. In the third C+0.50- site, C+0.50- is bonded in a linear geometry to one Fe2+ and one O2- atom. The C–O bond length is 1.16 Å. In the fourth C+0.50- site, C+0.50- is bonded in a linear geometry to one Fe2+ and one O2- atom. The C–O bond length is 1.16 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one C+0.50- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one C+0.50- atom. In the third O2- site, O2- is bonded in a single-bond geometry to one C+0.50- atom.

36 MATERIALS SCIENCE↗