Molecular Configuration of the Optimal Bbp of the 1, 2-Sigmatropic H-Shift Rearrangement of Cyclopen (image) American Institute of Physics Share Print E-Mail Caption Molecular configuration of the optimal BBP of the 1, 2-sigmatropic H-shift rearrangement of cyclopentadiene. The arrows correspond to the components of the gradient at this point. Credit AIP Publishing Usage Restrictions This image may be used only with appropriate credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.