Uranyl-organic complexes: structure symbols, classification of carboxylates, and uranyl polyhedral geometries
A system of structure symbols to classify and group uranyl-organic complexes is devised. The method is applied to describe 604 published structures of uranyl-organic complexes, then to consider the complex chemistry of uranyl carboxylates. A review of the uranyl-organic structural units in monocarboxylates, polycarboxylates and mixed carboxylates is provided. The uranyl (U–O) and equatorial bond lengths are considered for well-refined structures and their trends are briefly discussed.