Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Tetraphenylcyclopentadienone is a dark purple to black crystalline solid at standard temperature and pressure. Because of its highly conjugated nature, this organic compound can be analyzed in the UV spectrum. Tetraphenylcyclopentadienone has a "propeller" shape in its 3D conformation. The four phenyl rings are rotated out...