Materials Data on Nb by Materials Project

Abstract

Nb is beta Plutonium-like structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twelve inequivalent Nb sites. In the first Nb site, Nb is bonded in a 1-coordinate geometry to thirteen Nb atoms. There are a spread of Nb–Nb bond distances ranging from 2.66–3.45 Å. In the second Nb site, Nb is bonded in a 1-coordinate geometry to twelve Nb atoms. There are a spread of Nb–Nb bond distances ranging from 2.66–3.31 Å. In the third Nb site, Nb is bonded in a 1-coordinate geometry to fourteen Nb atoms. There are a spread of Nb–Nb bond distances ranging from 2.68–3.44 Å. In the fourth Nb site, Nb is bonded in a 1-coordinate geometry to fourteen Nb atoms. There are a spread of Nb–Nb bond distances ranging from 2.96–3.35 Å. In the fifth Nb site, Nb is bonded in a 1-coordinate geometry to thirteen Nb atoms. There are a spread of Nb–Nb bond distances ranging from 2.64–3.38 Å. In the sixth Nb site, Nb is bonded in a 1-coordinate geometry to eleven Nb atoms. There are a spread of Nb–Nb bond distances ranging from 2.88–3.16 Å. In the seventh Nb site, Nb is bonded in a 1-coordinate geometry to thirteen Nb atoms. There are a spread of Nb–Nb bond distances ranging from 2.71–3.12 Å. In the eighth Nb site, Nb is bonded to twelve Nb atoms to form a mixture of corner and face-sharing NbNb12 cuboctahedra. There are a spread of Nb–Nb bond distances ranging from 2.68–3.14 Å. In the ninth Nb site, Nb is bonded to twelve Nb atoms to form a mixture of corner and face-sharing NbNb12 cuboctahedra. There are a spread of Nb–Nb bond distances ranging from 2.82–2.92 Å. In the tenth Nb site, Nb is bonded in a 1-coordinate geometry to twelve Nb atoms. There are one shorter (2.88 Å) and one longer (3.14 Å) Nb–Nb bond lengths. In the eleventh Nb site, Nb is bonded in a 10-coordinate geometry to eleven Nb atoms. The Nb–Nb bond length is 2.68 Å. In the twelfth Nb site, Nb is bonded in a 10-coordinate geometry to eleven Nb atoms.