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DOE OSTI2020

Materials Data on K3Fe(CN)6 by Materials Project

K3Fe(CN)6 crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional and consists of four iron molecules and one K(CN)2 framework. In the K(CN)2 framework, there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in an octahedral geometry to six N3- atoms. There are a spread of K–N bond distances ranging from 2.76–2.97 Å. In the second K1+ site, K1+ is bonded in a 4-coordinate geometry to six N3- atoms. There are a spread of K–N bond distances ranging from 2.84–3.24 Å. There are three inequivalent C2+ sites. In the first C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. In the second C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. In the third C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a 4-coordinate geometry to three K1+ and one C2+ atom. In the second N3- site, N3- is bonded in a distorted single-bond geometry to three K1+ and one C2+ atom. In the third N3- site, N3- is bonded in a 1-coordinate geometry to three K1+ and one C2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on K3Fe(CN)6 by Materials Project

K3Fe(CN)6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional and consists of two iron molecules and one K(CN)2 framework. In the K(CN)2 framework, there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 4-coordinate geometry to six N3- atoms. There are a spread of K–N bond distances ranging from 2.89–3.29 Å. In the second K1+ site, K1+ is bonded in an octahedral geometry to six N3- atoms. There are a spread of K–N bond distances ranging from 2.83–3.01 Å. There are three inequivalent C2+ sites. In the first C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. In the second C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. In the third C2+ site, C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.18 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a 4-coordinate geometry to three K1+ and one C2+ atom. In the second N3- site, N3- is bonded in a distorted single-bond geometry to three K1+ and one C2+ atom. In the third N3- site, N3- is bonded in a distorted single-bond geometry to three K1+ and one C2+ atom.

36 MATERIALS SCIENCE↗