Cyclic polyamines as templates for novel complex topologies in uranyl sulfates and selenates

Single crystals of two novel uranyl sulfates and two novel uranyl selenates with protonated cyclen and 3-aminotropane molecules, ((C-8 H24N4)[(UO2)(3) (SO4)(5)](H2O)(3) (I), (C8H24N4)(H5O2)(H3O)[(UO2)(4) (SeO4)(7) (H2O)](H2O)(6.6) (II), (C8H18N2)(H5O2)(H3O)[(UO2)(3) (SO4)(5) (H2O)](H2O) 0.5 (III), and (C8H18N2)(H5O2)(H3O)[(UO2)(3) (SeO4)(5) (H2O)](H2O)(2) (IV) have been prepared by isothermal evaporation from aqueous solutions and structurally characterized. Uranyl-containing 2D units have been investigated using topological approach and information-based complexity measures demonstrating that complex topologies form more rare than their simplest counterparts, which is a response of the crystal structure to changes of chemical conditions within the system.