Materials Data on U(FeB3)2 by Materials Project
UFe2B6 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. U6+ is bonded in a 12-coordinate geometry to sixteen B2- atoms. There are a spread of U–B bond distances ranging from 2.66–2.89 Å. Fe3+ is bonded in a 10-coordinate geometry to ten B2- atoms. There are a spread of Fe–B bond distances ranging from 2.02–2.18 Å. There are two inequivalent B2- sites. In the first B2- site, B2- is bonded in a 6-coordinate geometry to three equivalent U6+, three equivalent Fe3+, and three B2- atoms. There is one shorter (1.70 Å) and two longer (1.79 Å) B–B bond length. In the second B2- site, B2- is bonded in a 9-coordinate geometry to two equivalent U6+, four equivalent Fe3+, and three B2- atoms. The B–B bond length is 1.78 Å.