Materials Data on NbNiTe5 by Materials Project
NbNiTe5 crystallizes in the orthorhombic Cmcm space group. The structure is two-dimensional and consists of two NbNiTe5 sheets oriented in the (0, 1, 0) direction. Nb2+ is bonded in a 8-coordinate geometry to eight Te+0.80- atoms. There are a spread of Nb–Te bond distances ranging from 2.86–2.93 Å. Ni2+ is bonded to six Te+0.80- atoms to form edge-sharing NiTe6 octahedra. There are four shorter (2.59 Å) and two longer (2.60 Å) Ni–Te bond lengths. There are three inequivalent Te+0.80- sites. In the first Te+0.80- site, Te+0.80- is bonded in a 3-coordinate geometry to one Nb2+ and two equivalent Ni2+ atoms. In the second Te+0.80- site, Te+0.80- is bonded in a distorted L-shaped geometry to two equivalent Nb2+ atoms. In the third Te+0.80- site, Te+0.80- is bonded in a 3-coordinate geometry to two equivalent Nb2+ and one Ni2+ atom.