Synthesis, structure, and electrical resistivity of Cs3U18Se38

The Synthesis and Crystal Structure of U7O2Se12

“…EDX analysis of the black plates gave U:Se = 35:65, but no oxygen. The black prisms gave Cs:U:Se = 1:6:13; these were later confirmed to be Cs 3 U 18 Se 38 46 from its unit cell dimensions as measured on a single crystal.…”

“…A rational synthesis of U 7 O 2 Se 12 was obtained by combining uranium (60 mg, 0.252 mmol), SeO 2 (4.0 mg, 0.0360 mmol), Se (31.3 mg, 0.396 mmol), and CsCl (100 mg, 0.594 mmol) and heating the reaction under the profile described above. It afforded black plates of U 7 O 2 Se 12 in about 65 wt% yield as well as a few black prisms of Cs 3 U 18 Se 38 46. EDX analysis of the black plates gave U:Se = 35:65, but no oxygen.…”

Simulation of uranium mononitride spent fuel: A crystallographic approach

“…CsUTe6 crystallizes also in the orthorhombic system with eight formula units including chain structures in a cell of dimensions a = 30.801 (7), b = 8.143(2), c = 9.174(2) Å. More complex M m U u Q q compounds are also known such as Cs 3 U 18 Se 38 which was prepared and characterised by the same group (Oh & Ibers, 2012) [89].…”

New compounds and structures in the solid state

“…5). 38 There are four U atoms in the asymmetric unit, each with a different coordination environment. U1 is coordinated by 7 Se atoms in an augmented triangular prismatic coordination; U2 is in a monocapped square antiprism; U3 has a distorted square antiprism and U4 is in a bicapped trigonal prism.…”