Materials Data on NbHg3F6 by Materials Project
(Hg)2NbHgF6 crystallizes in the trigonal P-31m space group. The structure is one-dimensional and consists of two mercury molecules and one NbHgF6 ribbon oriented in the (0, 0, 1) direction. In the NbHgF6 ribbon, Nb2+ is bonded to six equivalent F1- atoms to form NbF6 octahedra that share faces with two equivalent HgF6 cuboctahedra. All Nb–F bond lengths are 1.94 Å. Hg+1.33+ is bonded to six equivalent F1- atoms to form distorted HgF6 cuboctahedra that share faces with two equivalent NbF6 octahedra. All Hg–F bond lengths are 3.11 Å. F1- is bonded in a single-bond geometry to one Nb2+ and one Hg+1.33+ atom.
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