Date of Award
Master of Science (MS)
The microwave spectrum of the weakly bound propyne-HF/DF complex in the region between 6 and 16 GHz was analyzed. The spectrum was characteristic of a distorted T-shaped asymmetric top exhibiting torsional splitting caused by a low barrier to internal rotation of the methyl top relative to the propyne-HF frame. Deuterium substitution of HF confirms that the acid proton of HF is located between the F atom and the propyne triple bond. The spectroscopic constants given below are consistent with the fluorine atom being displaced toward the methyl group from a line perpendicular to and bisecting the propyne triple bond, suggesting a weak hydrogen bond interaction between fluorine and the methyl protons.
Bumgarner, Roger E., "Internal Rotation Effects and Nuclear Hyperfine Structure in the Microwave Spectrum of Propyne-HF" (1983). Masters Theses. 2852.
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