Author/Authors :
K???، نويسنده , , Jaroslav and Dybal، نويسنده , , Ji?? and Makrl?k، نويسنده , , Emanuel and Sedl?kov?، نويسنده , , Zde?ka and Ka?i?ka، نويسنده , , V?clav، نويسنده ,
Abstract :
Benzoate anion forms a strong complex with meso-octamethylcalix[4]pyrrole in nitrobenzene with the stabilization constant K = 3.88 × 105 mol−1 L−1 at 298 K. According to NMR and FTIR spectra and DFT calculations, the benzoate anion is symmetrically bound by two pairs of hydrogen bonds to its oxygen atoms. The bound anion is prone to fast exchange with a free anion of the same kind, the exchange correlation time being 4.93 × 10−5 s at 298 K.
