Ann Schweitzer

Document Type

Honors Project

First Advisor

Dr. Erich Brumbaugh

Degree Award Date

Spring 2001

Keywords

Molecular Structure, Molecular Interactions, DMSO, Water, Iodine

Disciplines

Chemistry

Abstract

Dimethylsulfoxide (DMSO) is an interesting molecule to study at a molecular level. DMSO is an absorbent molecule that has even had claims in the past to help arthritis. Even with these claims however, not many studies have been done to better understand either the structure of a DMSO molecule or how it interacts with molecules of a different substance. This study looked at how DMSO molecules interacted with water molecules and iodine molecules to better understand the molecular structure of the DMSO and the bonding that occurs in the binary mixture of DMSO with water and the binary mixture of DMSO with iodine. Densities, viscosities, NMR spectra, and refractive indices were measured and determined for different concentrations of DMSO in water to determine the point of maximum deviation from ideality. Absorbencies were determined for different concentrations of DMSO and I2 in carbon tetrachloride to determine the concentration of DMSO to I2 that formed a complex. The point of maximum deviation from ideality for the DMSO and water binary mixture was found to be 0.35 mole fraction while the DMSO-I2 complex was formed at a mole fraction of 0.5 DMSO to I2.

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