Materials Data on Be13Tc by Materials Project

Abstract

Be13Tc crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. there are four inequivalent Be sites. In the first Be site, Be is bonded in a 9-coordinate geometry to nine Be atoms. There are a spread of Be–Be bond distances ranging from 2.14–2.42 Å. In the second Be site, Be is bonded in a cuboctahedral geometry to twelve equivalent Be atoms. In the third Be site, Be is bonded to four equivalent Tc atoms to form corner-sharing BeTc4 tetrahedra. All Be–Tc bond lengths are 2.93 Å. In the fourth Be site, Be is bonded in a 6-coordinate geometry to five Be and one Tc atom. There are one shorter (2.02 Å) and two longer (2.18 Å) Be–Be bond lengths. The Be–Tc bond length is 2.16 Å. Tc is bonded to eight Be atoms to form corner-sharing TcBe8 hexagonal bipyramids.