Reaction between beta-cyclodextrin (beta-CD) and diaqua(benzoate)chlorodiox
ouranium in aqueous solution leads to the formation of the adduct diaqua(be
nzoate)hydroxydioxouranium(VI)/beta-CD The compound has been characterized
from crystallographic studies of two crystal forms. Monometallic uranyl-hyd
roxide is included in the CD cavity and is stabilized by hydrophobic forces
and hydrogen bonds. EXAFS studies of diaqua(benzoate)chlorodioxouranium in
aqueous solution with alpha and beta-CD suggest that uranyl insertion comp
ounds are present in both solutions.