Versatility of p-sulfonatocalix[5]arene in building up multicomponent bilayers
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The pH effect on complexation of Alkali metal cation by p-sulfonatocalix (4) arene in aqueous solution
The complexation of Alkali metal cations by the water-soluble p-sulfonic acid calix(4)arenewas thermodynamically characterized using spectrophotometeric data which are consistentwith the formation of a 1:1 complex resulting from electrostatic interactions between thesulfonato groups and alkali metal cations. In this study, we determined the formationconstants (log K) of the complexes and have c...
متن کامل1D Infinite silver(i) chains reside in the big cavities built by the novel p-sulfonatocalix[4]arene-trisilver blocks.
A novel luminescent inclusion complex, {[(C4AS)(2)Ag(3)(mu-2,2'-bpy)(2)(2,2'-bpy)(2)] [Ag(5)(mu-2,2'-bpy)(4)(2,2'-bpy)(4)].20H(2)O}(n) () (2,2'-bpy = 2,2'-bipyridine, C4AS = p-sulfonatocalix[4]arene), with an unusual framework is reported: the parallel 1D infinite silver(i) chains separated by the water belts reside in the big cavities of the p-sulfonatocalix[4]arene-trisilver blocks.
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Calixarenes are a readily available and important class of macrocycles in supramolecularchemistry. Calixarenes have generated considerable interest due to their basket shaped structureand as useful building blocks to synthesize selective receptors for the guest species, notably alkali,alkaline earth, lanthanide and transition metal cations. In this work studied on the complexingproperties of a ...
متن کاملEquilibrium Constants of the Complexation of Molybdate Ion with para-Sulfonatocalix [4] arene in aqueous media
The complexation of sodium molybdate with para-sulfonatocalix [4] arene was studied in thetemperature range from 20 to 40 °C and pH = 5.8 by spectroscopic method in water solution. Thestability constants of complexes were calculated by the multiwavelength analysis of spectral datausing SQUAD program. The equilibrium constant, spectroscopic data, molar absorptivities andconcentrations of all spe...
متن کاملSolid-state supramolecular architectures by p-sulfonatocalix[5]arene with bispyridinium derivatives: factors of spacers and terminal groups†
Three solid-state supramolecular structures were obtained by inclusion complexation of p-sulfonatocalix[5]arene with 1,2-bis(4,40-methylpyridinium)ethane, 1,2-bis(4,40aminopyridinium)ethane and 1,4-bis(pyridinium)butane. All three complexes have been thoroughly examined from the aspects of binding mode, stoichiometry and extended structure. Effects of guest molecules, especially spacers and ter...
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