Resorcinarenes salts

A -Alkyl Ammonium Resorcinarene Salts A Versatile Family of Calixarene-Related Host Molecules... 

The (V-alkyl ammonium resorcinarene salts (NARSs) are easily prepared from the corresponding resorcinarene tetrahenzoxazines under refluxing conditions in the presence of mineral acids [36]. The hydrogen bonds between the ammonium moieties and halides form a strong circular hydrogen bond seam ( H(R )N (R") H H(R )N (R")H )2 leading to concave host molecules that can... 

Alkyl Airunonium Resorcinarene Salts A Versatile Family of.. 

The halides (Cl and Br) in the NARXs are of suitable size and nicely fit between the -NH2 cations. The compound are symmetric both in solution and in the solid state. Non-spherical anions such as nitrate trigonal planar), picrate aromatic planar), triflate and trifluoroacetate ellipsoidal) have been used to understand the effect on the conformation of the N-alkyl annnoniiun resorcinarene salts... 

Fig. 11.30 Af-Alkyl ammonium resorcinarene salts (NARYs, Y = non-halide)...

Complementing our work on pure A-alkyl ammonium resorcinarene salts, Szumna and coworkers have prepared a series of zwitter-ionic resorcinarene molecules from amino acids through Mannich condensation reactions [63, 64, 65, 66]. These... 

In the presence of mineral acids, the six-membered oxazine ring in the resorcinarene tetrabenzoxazines is opened, resulting in A(-alkyl ammonium resorcinarene salts (NARSs). The NARSs possess four spatially-fixed anions within... 

Solvent molecules within the hexameric capsule can be displaced by sizable quaternary ammonium salts, and dissociation of at least one resorcinarene molecule from the hexamer is required for guest exchange. More details about the dynamic process of this assembly at nano- and micromolar concentrations were acquired using... 

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