Materials Data on Ta3As by Materials Project

Ta3As crystallizes in the tetragonal P4_2/n space group. The structure is three-dimensional. there are three inequivalent Ta sites. In the first Ta site, Ta is bonded in a 2-coordinate geometry to two equivalent As atoms. There are one shorter (2.64 Å) and one longer (2.68 Å) Ta–As bond lengths. In the second Ta site, Ta is bonded in a distorted see-saw-like geometry to four equivalent As atoms. There are a spread of Ta–As bond distances ranging from 2.63–2.68 Å. In the third Ta site, Ta is bonded in a 2-coordinate geometry to three equivalent As atoms. There are a spread of Ta–As bond distances ranging from 2.61–2.91 Å. As is bonded in a 9-coordinate geometry to nine Ta atoms.