Crystal structures of three uranyl–acetate–bi­pyri­dine com­plexes crystallized from hydraulic fracking fluid

Three uran­yl–acetate–bi­py­ri­dine crystal structures were determined from bulk crystalline material obtained from the slow evaporation of incubations of uranyl acetate with hydraulic fracking fluid (HFF) and bi­py­ri­dine ligands. Their crystal structures highlight the possibility of using bi­py­ri­dine within HFF to bind U in solution, which could draw the U–bi­py­ri­dine com­plex out of solution, sequester U, and retain it within shale during hydraulic fracking.

Synthesis and crystal structure of Ba₂Y_0.87(1)Mn_1.71(1)Te₅

A new quaternary phase Ba₂Y_0.87(1)Mn_1.71(1)Te₅ has been synthesized, which is the first member of the Ba–M–Mn–Te system (M = Sc and Y). The structure consists of six crystallographically independent sites: one Ba site, one Y site, one Mn site and three Te sites. The building blocks of the structure are YTe₆ octa­hedra and MnTe₄ tetra­hedra.

X-ray crystallographic structure of a novel enanti­opure chiral iso­thio­urea with potential applications in enanti­oselective synthesis

The X-ray crystal structure of a novel enanti­omerically pure chiral iso­thio­urea is reported. This com­pound offers potential applications as an organocatalyst.