Materials Data on LaTcN3 by Materials Project
LaTcN3 crystallizes in the monoclinic P2/m space group. The structure is three-dimensional. La3+ is bonded in a distorted body-centered cubic geometry to eight N3- atoms. There are a spread of La–N bond distances ranging from 2.61–3.03 Å. Tc6+ is bonded in a rectangular see-saw-like geometry to four N3- atoms. There are a spread of Tc–N bond distances ranging from 1.85–2.20 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a rectangular see-saw-like geometry to two equivalent La3+, one Tc6+, and one N3- atom. The N–N bond length is 1.25 Å. In the second N3- site, N3- is bonded in a 1-coordinate geometry to two equivalent La3+, one Tc6+, and one N3- atom. In the third N3- site, N3- is bonded to four equivalent La3+ and two equivalent Tc6+ atoms to form a mixture of distorted face, edge, and corner-sharing NLa4Tc2 octahedra. The corner-sharing octahedral tilt angles are 61°. In the fourth N3- site, N3- is bonded to four equivalent La3+ and two equivalent Tc6+ atoms to form a mixture of face, edge, and corner-sharing NLa4Tc2 octahedra. The corner-sharing octahedral tilt angles are 61°.