SiVance Cycloheptatriene is a seven member hydrocarbon ring containing three double bonds.
Cycloheptatriene is a clear liquid that has been of recurring theoretical interest in organic chemistry. It is widely used as a ligand in organometallic chemistry and as a building block in organic synthesis.
Cycloheptatriene is not aromatic, and the ring is not planar, due to the presence of the - CH2- group. Removal of a hydride ion from the methylene group gives the planar and aromatic cycloheptatriene cation, also called the tropylium ion.