Vinylidene: probable intemediacy in methylenecyclopropane decomposition and heat of formation
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Add time:09/25/2019 Source:sciencedirect.com
The high-temperature (=400°C) decomposition of methylenecyclopropane and its methyl derivatives proceeds, in part, with formation of an olefin and acetylene. The latter probably arises via a vinylidene intermediate. From the measure of activation energy a value of ΔHf0(CH2C:) ⩽ 409 ± 10 kJ mol-1 is obtained. This figure is in good agreement with theoretical calculations and also with the results of chemical activation experiments involving the reaction of methylene (1A1) with allene.
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