Chemistry Commons^™

Magnetic Nonequivalence In Higher Alkyl Groups, Philip Anthony Reitano

Masters Theses

The phenomenon of magnetic nonequivalence has been growing in recent years. Unequal populations of the various conformers in such molecules are normally accepted as the cause of nonequivalence, but nuclei which are stereochemically nonequivalent are not necessarily magnetically nonequivalent. This nonequivalence has been demonstrated for molecules of the type ABDC⁸CHR₁R₂, where R + H, F, and Me. Although in principle the effect is quite general this has not been previously observed in "freely rotating" systems for groups larger than methyl. The role of steric factors, the size of the substituents and the distances between …

Spectral Studies Of Hydrogen Bonding In Alcohols, Linda Moree Higgins Collins

Masters Theses

The phenomenon of hydrogen bonding in alcohols has been known since the early 1900's. Using three series of alcohols, benzyl alcohols, norbornanols and substituted naphthalene alcohols, it was hoped that some meaningful data could be presented to help clarify and expand some of the theories on alcohol association. The techniques to be utilized were ir and nmr spectroscopies.

The synthetic route for those compounds that were not available as alcohols involved reduction of the corresponding acids to alcohols by use of lithium aluminum hydride. The strengths of the various types of hydrogen bonds, intramolecular and intermolecular, were detected by nmr …