Pi Bonding Pi bonds form after sigma bonds. Sideways overlap of parallel p orbitals. 0 node destructive(antibonding)interaction antibonding MO energy => constructive (bonding)interaction T bonding MO 11 Copyright2005 Pearson Prentice Hall,Inc.Chapter 2 11 Pi Bonding • Pi bonds form after sigma bonds. • Sideways overlap of parallel p orbitals. =>