Cis-Trans Interconversion CH3 CH CH3 cis no overlap with the ends perpendicular trans Copyright2010 Pearson Prentice Hall,Inc. Cis and trans isomers cannot be interconverted. No rotation around the carbon-carbon bond is possible without breaking the pi bond(264 kJ/mole). Chapter 7 7Chapter 7 7 Cis-Trans Interconversion • Cis and trans isomers cannot be interconverted. • No rotation around the carbon—carbon bond is possible without breaking the pi bond (264 kJ/mole)