117307-09-2Relevant articles and documents
Chiroptical Properties and Molecular Geometry of Substituted Succinic Anhydrides and Imides
Polonski, Tadeusz
, p. 629 - 638 (2007/10/02)
U.v. and c.d. spectra have been measured for several α-substituted succinic anhydrides and imides.The observed Cotton effect signs corresponding to the two n-?* electronic transitions can be explained with the octant rule.The strong substituent and solvent dependence of the spectra is a result of the equilibrium between two skewed conformers of the five-membered ring.The geometry and relative energies of the conformers were found from the molecular mechanics (MM2) calculations.