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Diacetylene has been identified in the atmosphere of Titan and in the protoplanetary nebula CRL 618 by its characteristic vibrational spectrum.It is proposed to arise by a reaction between acetylene and the ethynyl radical (C 2 H), which is produced when acetylene undergoes photolysis.
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In organic chemistry, an ethynyl group is a functional group with the formula −C≡CH. It is the acetylene molecule with one fewer hydrogen atom. Ethynyl group ( HC≡C– ), also designated as acetylenic group (from acetylene ), and referred to in IUPAC chemical nomenclature as -yne suffix.
Print/export Download as PDF; ... 2-Butyne (dimethylacetylene) See also. C 4 H 6; Butane (C 4 H 10) Butene (C 4 H 8 This page was last ...
Print/export Download as PDF; Printable version; In other projects Wikidata item; ... butane-1-carboxylic acid: CH 3 (CH 2) 3 COOH 3-methylbutanoic acid: isovaleric acid
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The branching in 2-ethyl-1-butanol makes it harder to crystallize due to packing disruption, which results in a very low freezing point. Esters of 2-ethyl-1-butanol are similarly effected and it therefore finds application as a feedstock in the production of plasticizers and lubricants, where its presence helps reduce viscosity and lower freezing points.
Acetylene (systematic name: ethyne) is the chemical compound with the formula C 2 H 2 and structure H−C≡C−H.It is a hydrocarbon and the simplest alkyne. [8] This colorless gas is widely used as a fuel and a chemical building block.