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NF is Wurtzite structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of four monofluoroamine molecules. N1+ is bonded in a single-bond geometry to one F1- atom. The N–F bond length is 1.33 Å. F1- is bonded in a single-bond geometry to one N1+ atom.
NF2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of four difluoroamine molecules. N is bonded in a water-like geometry to two equivalent F atoms. There is one shorter (1.38 Å) and one longer (1.39 Å) N–F bond length. F is bonded in a single-bond geometry to one N atom.
N2F2 crystallizes in the trigonal R-3m space group. The structure is zero-dimensional and consists of six hydrofluoric acid molecules and three nitrogen molecules.