2005 Student Research Conference:
18th Annual Student Research Conference

Science

Crystal and Molecular Structure of Organophosphorous Pesticides
Joshua D. Kemper
Dr. Russell G. Baughman, Faculty Mentor

Using X-ray diffraction, the crystal and molecular structure of the organophosphorous insecticide phosmet has been determined. Phosmet was found to have a triclinic unit cell, which contains two molecules per unit cell in the P-1 space group. In the crystal, the thiophosphate group in phosmet resides on one side of the molecule, which is contrary to the presence of a vertical mirror that might be expected in the gaseous state. This report will discuss the 3-D structure of phosmet and how it affects its activity with acetylcholinesterase. The final R-value, along with key distances and angles, will be reported when all refinements have been finalized, as will other structures that will have been determined by the time of the conference.

Keywords: Pesticides, Organophosphorous, X-ray

Topic(s):Chemistry

Presentation Type: Oral Paper

Session: 40-5
Location: VH 1010
Time: 3:15

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