@article {Nyquist:1990:0003-7028:791,
	author = "Nyquist, Richard A. and Settineri, Sam E.",
	title = "Infrared Study of Coumarin in Different Solvent Systems",
	journal = "Applied Spectroscopy",
	volume = "44",
	number = "5",
	year = "1990",
	abstract = "Coumarin exhibits two infrared bands in the carbonyl stretching region of the spectrum. The doublet is due to Fermi resonance (F.R.) of the carbonyl stretching mode, <I>v</I>C=O, with an overtone of a lower-lying fundamental. The <I>v</I>C=O mode was corrected for F.R. in a series of solvents and solvent systems, and unperturbed <I>v</I>C=O was correlated with mole % solvent <I>A</I>/solvent <I>B</I>, and other parameters. The cause of shifts of <I>v</I>C=O in solvent systems is the result of several parameters, including bulk dielectric effects, basicity of the carbonyl group, and steric factors of both the solute and solvent.",
	pages = "791-796",
	url = "http://www.ingentaconnect.com/content/sas/sas/1990/00000044/00000005/art00005",
	doi = "doi:10.1366/0003702904087055",
	keyword = "Infrared, Solvent effects, Fermi resonance, Carbonyl stretching frequency"
}