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FeF3(NF)3 is alpha bismuth trifluoride structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one ferric fluoride molecule and three monofluoroamine molecules.
FeNF6N2 is High-temperature superconductor-derived structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional and consists of eight ammonia molecules and one FeNF6 framework. In the FeNF6 framework, Fe3+ is bonded to six equivalent F1- atoms to form FeF6 octahedra that share corners with six equivalent NF6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Fe–F bond lengths are 1.99 Å. N1+ is bonded to six equivalent F1- atoms to form NF6 octahedra that share corners with six equivalent FeF6 octahedra. The corner-sharing octahedral tilt angles are 0°. All N–F bond lengths are 1.87 Å. F1- is bonded in a linear geometry to one Fe3+ and one N1+ atom.