A solution and solid state 15N NMR study of hydrogen bonding in a Schiffs base.
The 15N results reveal a difference in the extent of intramolecular hydrogen bond formation exhibited by the Schiffs base, compound 2, in solution and the solid state. Comparison of the 15N shielding changes observed, with those arising from protonation, provides the basis for a quantitative estimate of the strength of the hydrogen bonds formed.
Sitkowski
J
J
Institute of Organic Chemistry, Polish Academy of Sciences, Warszawa, Poland.
Stefaniak
L
L
Wawer
I
I
Kaczmarek
L
L
Webb
G A
GA
D006860:Hydrogen Bonding; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D009587:Nitrogen Isotopes; D012545:Schiff Bases / Q000737:chemistry*; D012996:Solutions
D009587:Nitrogen Isotopes; D012545:Schiff Bases; D012996:Solutions