1,5-Diphenylbicyclo[2.2.1]hept-5-ene-endo-2,endo-3-dicarboxylic Anhydride and 1,5-diphenylbicyclo[2.2.1]hept-5-ene-exo-2,exo-3-dicarboxylic Anhydride

The change of the anhydride group with respect to the cyclopentene ring in the endo and exo isomers of C₂₁H₁₆O₃ is reflected in the conformation of the phenyl rings and in the torsion angles around the C1-C10 bond.

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