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Quadrupole Splittings of Alkali NMR Signals in Decylammoniumchloride Mesophases

In lyotropic mesophases of decylammoniumchloride the NMR signals of the alkali nuclei 6Li, 7Li, 23Na, 39K, 85Rb, 87Rb and 133Cs solubilized in these mesophases have been observed. The linewidths of the signals are comparable with the linewidths in aqueous solutions. Apart from 6Li and 39K for all other alkali nuclei in the mesophases first-order quadrupole splitted spectra have been observed. For the rubidium isotopes 85Rb and 87Rb a ratio of the quadrupole splitting of 2.01 ± 0.05 has been determined. Further the chemical shifts of the solubilized alkali nuclei relative to infinitely diluted aqueous solutions have been measured.