Cation-cation interactions between uranyl cations in a polar open-framework uranyl periodate.
Novel open-framework alkali metal uranyl periodates, having the formula A[(UO2)3(HIO6)(OH)(O)(H2O)].1.5H2O (A = Li, Na, K, Rb, Cs), have been prepared through mild hydrothermal synthesis. These isostructural compounds contain distorted UO7 pentagonal bipyramids that are linked through a uranyl (UO22+) to uranyl cation-cation interaction. This interaction arises from a single axial uranyl oxygen coordinating at an equatorial site of an adjacent uranyl unit. These uranium oxide polyhedra are further bound by IO6 distorted octahedra creating an open-framework structure whose channels contain the alkali metal cations.
Sullens
Tyler A
TA
Department of Chemistry, Auburn University, 179 Chemistry Building, Auburn, Alabama 36849, USA.
Jensen
Rebecca A
RA
Shvareva
Tatiana Y
TY
Albrecht-Schmitt
Thomas E
TE