Guillem Aromi, Manuel Imperato, Alessio Nicolini, Jordi Ribas-Ariño, Michał Antkowiak, Olivier Roubeau, Andrea Cornia, Valentin Novikov, LEONI ALEJANDRA ALEJANDRA BARRIOS MORENO
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引用次数: 0
Abstract
Two new paramagnetic supramolecular helicates with formula (X@[Ni2L3])3+ (X = Cl, or Br; L = a bis-pyrazolylpyridine ligand) have been prepared and are described. Helicates of this metal are very rare with virtually no prior examples of them acting as host of anionic species. The persistence in solution of the new assemblies has been demonstrated unambiguously by mass spectrometry and paramagnetic NMR. This has allowed to establish the preference of the coordination [Ni2] host for Cl− over Br−, in agreement DFT calculations. These results show the promise of the use of metallohelicates as suitable systems for the selective encapsulation of specific anions in solution.
期刊介绍:
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.