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2-Butyne is of interest to physical chemists because of its very low torsional barrier and the problem of determining that barrier using high-resolution infrared spectroscopy. Analysis of its spectrum [3] leads to a determination that the torsional barrier is only 6 cm −1 (1.2 × 10 −22 J or 72 J mol −1).
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Ethyl Corporation is a fuel additive company headquartered in Richmond, Virginia, in the United States. The company is a distributor of fuel additives. The company is a distributor of fuel additives. Among other products, Ethyl Corporation distributes tetraethyl lead , an additive used to make leaded gasoline .
Isobutylene (or 2-methylpropene) is a hydrocarbon with the chemical formula (CH 3) 2 C=CH 2. It is a four-carbon branched alkene (olefin), one of the four isomers of butylene . It is a colorless flammable gas, and is of considerable industrial value.
2-Ethylanthraquinone is prepared from the reaction of phthalic anhydride and ethylbenzene: C 6 H 4 (CO) 2 O + C 6 H 5 Et → C 6 H 4 (CO) 2 C 6 H 3 Et + H 2 O. Both phthalic anhydride and ethylbenzene are readily available, being otherwise used in the large-scale production of plastics.
That implies a stabilization energy of 3.5 kcal/mol. [25] Similarly, the hydrogenation of the terminal double bond of 1,4-pentadiene releases 30.1 kcal/mol of heat, while hydrogenation of the terminal double bond of conjugated (E)-1,3-pentadiene releases only 26.5 kcal/mol, implying a very similar value of 3.6 kcal/mol for the stabilization ...
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