Diels-Alder Reaction: Exo Pre-coordination Complex
between E-1,3-Pentadiene and Maleic Anhydride


The precoordination complex of the exo cycloaddition of E-1,3-pentadiene and maleic anhydride. Van der Waals interactions hold this complex together and it is about 7.0 kcal/mol more stable than the isolated substrates.


Figure. The MP2(full)/6-31G* optimized precoordination complex of the exo cycloaddition of E-1,3-Pentadiene and Maleic Anhydride.