11. Since this reaction occurs in one step, steric effects drive the reaction speed. 12. Sometimes steric effects completely outweighs the electronic preference, giving the opposite regioisomer exclusively. 13. The cyclo oligomerization of thio ethanes illustrates the influence of steric effects on selectivity. 14. This treatment does not include ortho-substituents, which would introduce steric effects . 15. Some factors affecting product composition include steric effects , stability of the forming alkene. 16. Steric effects also affect the equilibrium; larger ligands favoring the less crowded tetrahedral geometry.17. In the absence of hydrogen bonding, steric effects direct peroxide addition to the opposite face. 18. An "'electronic effect "'influences the bond nor a steric effect . 19. Using an oxazoline auxiliary group provides steric effect which influences the high diastereoselectivity of asymmetric Ullman reaction. 20. This bonding supplies a basic molecular skeleton that is modified by repulsive forces generally considered steric effects .
