Materials Data on Np2Si4Tc3 by Materials Project

Abstract

Np2Tc3Si4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Np+3.50+ is bonded in a 2-coordinate geometry to two equivalent Tc+2.33- and two equivalent Si atoms. There are one shorter (2.93 Å) and one longer (2.96 Å) Np–Tc bond lengths. There are one shorter (2.92 Å) and one longer (2.94 Å) Np–Si bond lengths. There are two inequivalent Tc+2.33- sites. In the first Tc+2.33- site, Tc+2.33- is bonded in a 7-coordinate geometry to two equivalent Np+3.50+ and five Si atoms. There are a spread of Tc–Si bond distances ranging from 2.44–2.50 Å. In the second Tc+2.33- site, Tc+2.33- is bonded in a 12-coordinate geometry to six Si atoms. There are four shorter (2.51 Å) and two longer (2.56 Å) Tc–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 6-coordinate geometry to two equivalent Np+3.50+ and four Tc+2.33- atoms. In the second Si site, Si is bonded in a 4-coordinate geometry to four Tc+2.33- atoms.