Acetylenic From Wikipedia, the free encyclopedia In organic chemistry, the term acetylenic designates[1] A doubly unsaturated (sp-hybridized) position on a molecular framework, such as in an alkyne such as acetylene; An ethynyl fragment, HC ≡ {\displaystyle \equiv } C–, or substituted homologue. See also Allylic Propargylic Vinylic References [1]Tucker, William B. (2024-06-20). Organic Chemistry: Structure, Function, and Practice (1 ed.). Boca Raton: CRC Press. doi:10.1201/9781003479352. ISBN 978-1-003-47935-2. Related Articles