title: VT 1H NMR investigations of resonance-assisted intramolecular hydrogen bonding in 4-(dimethylamino)-2'-hydroxychalcone.
abstract: [reaction: see text] Resonance-assisted intramolecular hydrogen bonding in both polar aprotic and nonpolar solutions of 4-(dimethylamino)-2'-hydroxychalcone (DMAHC) has been investigated by variable-temperature proton NMR spectroscopy. In both nonpolar and polar solvents, the signal for the phenolic hydrogen moves downfield as the temperature is lowered. In each solvent system studied, a linear relationship between chemical shift and temperature was observed.
authors.affiliation: Department of Chemistry, Hofstra University, Hempstead, New York 11549, USA. Chmnwj@hofstra.edu
authors.forename: N
authors.initials: N
authors.lastname: Wachter-Jurcsak
authors.forename: C A
authors.initials: CA
authors.lastname: Detmer