olefinic

adjective1

1. •
   Characteristic of, or containing olefins.

   • Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich Using adamantylidenylfulvene, a similar adduct, was obtained where the adamantyl group is positioned rigidly onto the molecular framework by virtue of the olefinic linkage originating from the fulvene.