戊搭烯化学式为C₈H₆，是一种二环反芳香性有机化合物，其分子式为C₈H₆，由二个五元环两两相并而成。 戊搭烯的阴离子可以与两个锂离子作用而使其稳定性增强。

• 环戊［c,d］戊搭烯
• 丁搭烯
• 庚搭烯
• 辛搭烯

Pentalene is a polycyclic hydrocarbon composed of two fused cyclopentadiene rings. It has chemical formula C₈H₆. It is antiaromatic, because it has 4n π electrons where n is any integer. For this reason it dimerizes even at temperatures as low as -100 °C. The derivative 1,3,5-tri-tert-butylpentalene was synthesized in 1973. Because of the tert-butyl substituents this compound is thermally stable. Pentalenes can also be stabilized by benzannulation for example in the compounds benzopentalene and dibenzopentalene.