UV/Vis spectroscopic evaluation of 4-nitropyridine N-oxide as a solvatochromic indicator for the hydrogen-bond donor ability of solvents.

The potential of 4-nitropyridine N-oxide to act as a solvatochromic indicator of the hydrogen-bond donor ability of solvents has been evaluated. A linear free-energy relationship has been established that is predominantly dependent on the Kamlet-Taft a parameter of the solvent. In comparison to the previously reported results obtained for pyridine N-oxide, 4-nitropyridine N-oxide possesses a solvatochromic effect that is located in the long wavelength ultraviolet region (A = 330-355 nm) of the spectrum, making it a viable probe for hydrogen-bond donation assessment.

Main Author:	Lagalante, Anthony.
Other Authors:	Jacobson, Ryan., Bruno, Thomas.
Language:	English
Published:	1996
Online Access:	http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:177928