Accession Number : ADA262198


Title :   Pi-Pi Interaction in the Complexes of the Pyridino-18-Crown-6 Host Molecules and Aromatic Ammonium Salts as Determined by 1H NMR Spectroscopy.


Descriptive Note : Technical rept.


Corporate Author : BRIGHAM YOUNG UNIV PROVO UT DEPT OF CHEMISTRY


Personal Author(s) : Wang, T -M ; Bradshaw, J S ; Curtis, J C ; Huszthy, P ; Izatt, R M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262198.pdf


Report Date : 19 Mar 1993


Pagination or Media Count : 10


Abstract : Significant pi-pi interaction is found in the complexes of (S,S)-dimethylpyridino-18-crown-6 with (R)- and (S)-ALPHA-(1-Naphthyl)ethylammonium perchlorate. This finding is supported by the 1H NOESY NMR spectral technique, greater chemical shift changes of aromatic protons in both host and guest molecules upon complexation, and by molecular mechanics calculations.


Descriptors :   *COMPLEX COMPOUNDS , *MOLECULES , *AROMATIC COMPOUNDS , *CHEMICAL SHIFTS , *AMMONIUM COMPOUNDS , NUCLEAR MAGNETIC RESONANCE , PROTONS , MECHANICS , LIGANDS , ETHYL RADICALS , PERCHLORATES , PYRIDINES , SALTS , RECOGNITION , ORGANIC COMPOUNDS , SPECTRA , HYDROGEN , METHYL RADICALS , INTERACTIONS


Subject Categories : Organic Chemistry
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE