Unusual coordination for plutonium(IV), cerium(IV), and zirconium(IV) in the cationic layered materials [M 2Te 4O 11]X 2 (M = Pu, Ce, Zr; X = Cl, Br)

Abstract

Four isotypic cationic layered materials, [Pu 2Te 4O 11]Cl 2, [Ce 2Te 4O 11]Cl 2, [Zr 2Te 4O 11] Cl 2, and [Zr 2Te 4O 11]Br 2, have been prepared under hydrothermal conditions. Single crystal diffraction studies reveal that these materials possess cationic Pu/Ce/Zr tellurite layers with halides as interlamellar charge-balancing anions. The Pu IV, Ce IV, and Zr IV centers of the cationic layers exhibit a quite rare pentagonal bipyramid coordination environment. © 2012 American Chemical Society.