Giant regular polyhedra from calixarene carboxylates and uranyl
Citations Over TimeTop 1% of 2012 papers
Abstract
Self-assembly of large multi-component systems is a common strategy for the bottom-up construction of discrete, well-defined, nanoscopic-sized cages. Icosahedral or pseudospherical viral capsids, built up from hundreds of identical proteins, constitute typical examples of the complexity attained by biological self-assembly. Chemical versions of the so-called 5 Platonic regular or 13 Archimedean semi-regular polyhedra are usually assembled combining molecular platforms with metals with commensurate coordination spheres. Here we report novel, self-assembled cages, using the conical-shaped carboxylic acid derivatives of calix[4]arene and calix[5]arene as ligands, and the uranyl cation UO(2)2+ as a metallic counterpart, which coordinates with three carboxylates at the equatorial plane, giving rise to hexagonal bipyramidal architectures. As a result, octahedral and icosahedral anionic metallocages of nanoscopic dimensions are formed with an unusually small number of components.
Related Papers
- → A Novel Uranyl Sulfate Cluster in the Structure of Na6(UO2)(SO4)4(H2O)2(2002)55 cited
- → General Route to Three-Dimensional Framework Uranyl Transition Metal Phosphates with Atypical Structural Motifs: The Case Examples of Cs2{(UO2)4[Co(H2O)2]2(HPO4)(PO4)4} and Cs3+x[(UO2)3CuH4-x(PO4)5]·H2O(2006)39 cited
- → Uranyl Heteropolyoxometalate: Synthesis, Structure, and Spectroscopic Properties(2012)37 cited
- → Poly[diammonium [diaqua(μ7-benzene-1,2,3,4,5,6-hexacarboxylato)tetraoxidodiuranium(VI)]](2014)8 cited
- → Uranyl(VI)–Acetylacetonate Coordination Compounds with Various N-Heterocyclic Ligands(2010)16 cited