Abstract
Syntheses, IR spectroscopic and X-ray diffraction studies of new uranyl iodoacetate complexes with divalent metals were carried out: R[UO2(CH2ICOO)3]2·6H2O (R = Mg2+ (I), Mn2+ (II), Ni2+ (III)). It was established that isostructural I–III crystallize in the cubic crystal system and contain octahedral aqua complexes [R(H2O)6]2+, which connect hexagonal-bipyramidal complexes [UO2(CH2ICOO)3]– into a three-dimensional framework by hydrogen bonds. Using molecular Voronoi–Dirichlet polyhedra, it was found that bifurcate halogen bonds O⋅⋅⋅I−C are also involved in the interconnection of anionic complexes. On the example of two series of stoichiometrically similar compounds dependence of the ratio of sizes of carboxylate ligands and counter cations on crystal system was observed and crystal systems for the compounds that have not yet been structurally characterized were assumed.
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