Materials Data on NbF4 by Materials Project
NbF4 crystallizes in the tetragonal I4/mmm space group. The structure is two-dimensional and consists of two NbF4 sheets oriented in the (0, 0, 1) direction. Nb4+ is bonded to six F1- atoms to form corner-sharing NbF6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (1.91 Å) and four longer (2.09 Å) Nb–F bond lengths. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Nb4+ atom. In the second F1- site, F1- is bonded in a linear geometry to two equivalent Nb4+ atoms.
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