Inclusion compounds of cucurbit[<Emphasis Type="Italic">n</Emphasis>]urils with metal complexes |
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Authors: | O A Gerasko V P Fedin |
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Institution: | 1.Nikolaev Institute of Inorganic Chemistry, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia |
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Abstract: | A new class of supramolecular compounds—inclusion compounds of metal complexes encapsulated in organic macrocyclic cavitands
cucurbitn]urils (CBn], C6n
H6n
N4n
O2n
, n = 7−10)—has been surveyed. A unique combination of a rather rigid hydrophobic intramolecular cavity and negatively charged
portals favors the formation of stable host-guest compounds. Basic methods of synthesis of inclusion compounds of CBn] with metal complexes have been reported, and the structures of the resulting products isolated as crystals and characterized
by X-ray crystallography have been considered. The effect of encapsulation on the geometric and spectral characteristics of
the complexes and their redox properties has been traced. It has been shown that encapsulation in CBn] can lead to a change in the reactivity of the complexes in thermolysis and isomerization and aquation reactions. Encapsulation
of biologically active metal complexes in CBn] is a promising strategy for designing new-generation prolonged-action pharmaceuticals. |
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Keywords: | |
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