Materials Data on CeUTe6 by Materials Project

Abstract

UCeTe6 crystallizes in the orthorhombic Amm2 space group. The structure is two-dimensional and consists of two UCeTe6 sheets oriented in the (0, 1, 0) direction. U3+ is bonded in a 9-coordinate geometry to nine Te1- atoms. There are a spread of U–Te bond distances ranging from 3.24–3.27 Å. Ce3+ is bonded in a 9-coordinate geometry to nine Te1- atoms. There are a spread of Ce–Te bond distances ranging from 3.26–3.33 Å. There are four inequivalent Te1- sites. In the first Te1- site, Te1- is bonded in a 5-coordinate geometry to one U3+ and four equivalent Ce3+ atoms. In the second Te1- site, Te1- is bonded to four equivalent U3+ and one Ce3+ atom to form a mixture of distorted corner and edge-sharing TeCeU4 trigonal bipyramids. In the third Te1- site, Te1- is bonded in a 6-coordinate geometry to two equivalent U3+ and four equivalent Te1- atoms. All Te–Te bond lengths are 3.11 Å. In the fourth Te1- site, Te1- is bonded in a 2-coordinate geometry to two equivalent Ce3+ and four equivalent Te1- atoms. All Te–Te bond lengths are 3.11 Å.