INTRAMOLECULAR INTERACTION BETWEEN A HYDROXYL GROUP AND PI-ELECTRONS .22. RELATIONSHIP BETWEEN CONFORMATION AND FREQUENCY SHIFT BY INTRAMOLECULAR O-H PI INTERACTION IN OLEFINIC ALCOHOLS

In olefinic alcohols the intramolecular interaction between the OH group and the π-electrons is observed as a shift to the lower frequency of the OH stretching band (νOH, when the molecule is fixed in a conformation in which both groups are mutually in proximity or when it can adopt such a conformation. The closer the interacting groups, the greater the value of the νOH shift, and ΔνOH can be correlated to the degree of the overlap between the orbitals of the OH group and the π-electrons. © 1968.