dc.creator Philip, Thomas en_US dc.creator Cook, Robert L. en_US dc.creator Malloy, Thomas B., Jr. en_US dc.date.accessioned 2006-06-15T14:14:50Z dc.date.available 2006-06-15T14:14:50Z dc.date.issued 1979 en_US dc.identifier 1979-RF-04 en_US dc.identifier.uri http://hdl.handle.net/1811/10916 dc.description $^{1}$ N. L. Allinger (private communication) en_US dc.description Author Institution: en_US dc.description.abstract Prompted by Molecular Mechanics calculations by Allinger and $coworkers,^{1}$ we undertook a study of the microwave spectrum of $\delta$-valerolactone. In agreement with their calculations, we have found two conformers within a range of less than 1 kcal/mole.[FIGURE] R branch transitions in R band, K band and X band have been measured and used to determine the rotational constants. For the half-chair conformation the rotational constants (in MHz) are A = 4661.18, B = 2558.57, C = 1771.16. For the less abundant half boat conformer, A = 4547.06, B = 2595.87, C = 1867.86. A study of the Stark effect was only partially successful due to the nature of the spectrum. The presence of two conformers was further verified by disappearance of lines from the Raman spectrum when the sample was solidified and cooled to liquid nitrogen temperatures. Temperature studies of the Raman spectrum are in progress to attempt to determine the $\Delta H$ between the conformers. en_US dc.format.extent 96019 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title IDENTIFICATION OF TWO CONFORMERS FOR A SATURATED SIX-MEMBERED-RING MOLECULE: $\delta$-VALEROLACTONE en_US dc.type article en_US
﻿

### Files in this item

Items in Knowledge Bank are protected by copyright, with all rights reserved, unless otherwise indicated.