Highly porous uranyl compounds in which SO42− or SeO42− ions link adjacent U centers were prepared by using a crown ether as template. The uranyl sulfate (see picture; U- and S-centered polyhedra are yellow and green, respectively) has the lowest density so far reported for actinide oxide frameworks, while the uranyl selenate forms tubules that are separated by columns of [(H3O)@([18]crown-6)]+ complex cations.
No takes yet. Share an insight, caveat, or question.
Alekseev et al. (2007) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: