The ultraviolet photochemistry of phenylacetylene and the enthalpy of formation of 1, 3, 5-hexatriyne

O Sorkhabi, F Qi, AH Rizvi, AG Suits

文献索引：Sorkhabi; Qi; Rizvi; Suits Journal of the American Chemical Society, 2001 , vol. 123, # 4 p. 671 - 676

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被引用次数: 20

摘要

The ultraviolet photochemistry of phenylacetylene was studied in a molecular beam at 193 nm. The only primary photofragments observed were HCCH (acetylene) and C6H4. Some of the C6H4 molecules were found to decompose to 1, 3, 5-hexatriyne and molecular hydrogen. An enthalpy of formation of Δ H f≤ 160±4 kcal mol-1 was determined for 1, 3, 5- hexatriyne from the energetic threshold for this process. This experimentally determined ...