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ZZaitsev rule
Z-value
An index of the ionizing power of a solvent based on the frequency of the longest wavelength electronic absorption maximum of 1-ethyl-4-methoxycarbonylpyridinium iodide in the solvent. The Z-value is defined by:
Math - e
where Math - text is in Math - text and Math - text is in Math - text.
See also: Dimroth–Reichardt Math - ei parameter, Grunwald–Winstein equation
Source:
PAC, 1994, 66, 1077 (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1176
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Cite as: IUPAC Compendium of Chemical Terminology, Electronic version, http://goldbook.iupac.org/Z06737.html.
Transformed and rewritten from PDF version (entry http://www.iupac.org/goldbook/Z06737.pdf)
by: Miloslav Nic, Jiri Jirat, Bedrich Kosata, ICT Prague, Czech Republic
Version for print | History of this term
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