Materials Data on Nb2GeTe4 by Materials Project
Nb2GeTe4 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of two Nb2GeTe4 sheets oriented in the (0, 0, 1) direction. Nb2+ is bonded to six Te2- atoms to form a mixture of distorted face and edge-sharing NbTe6 pentagonal pyramids. There are a spread of Nb–Te bond distances ranging from 2.84–2.99 Å. Ge4+ is bonded in a square co-planar geometry to four Te2- atoms. All Ge–Te bond lengths are 2.84 Å. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 4-coordinate geometry to three equivalent Nb2+ and one Ge4+ atom. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to three equivalent Nb2+ and one Ge4+ atom.
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