alkaeneen
Alkenes, also known as olefins, are unsaturated hydrocarbons characterized by one or more carbon–carbon double bonds. In acyclic alkenes the general formula is CnH2n (n ≥ 2). The C=C bond restricts rotation, giving rise to stereoisomerism when two different substituents are attached to the double-bond carbons; common examples include cis and trans isomers. The simplest members are ethene (ethylene, C2H4) and propene (propylene, C3H6).
Nomenclature and properties follow from the double bond. Alkenes are typically nonpolar and range from gases
Production and occurrence are dominated by petroleum processing and natural gas chemistry. Major industrial routes include
Reactions and applications focus on the reactivity of the C=C bond. Addition reactions convert alkenes into