Changes in coordination are also effective at altering the reactivity. Reactions 1 and 2 with c 3 linkers are consistently less favorable than their c 4 counterparts, and the reverse is true for Reaction 3. As already mentioned, the effect of coordination seems to be somewhat smaller than the choice of linker; using N(c 3 ) linkers in place of N(c 4 ) (again comparing the 90 • models) causes Reactions 1 and 2 to be less favorable by 14 kcal/mol and 2 kcal/mol, respectively, while Reaction 3 becomes 16 kcal/mol more favorable. As the rhodium and linker atomic charges are negligibly affected by a change in coordination, see Figure , these differences in reactivity are likely due to the greater steric bulk of the c 3 linkers at a given bite angle. Reactions 1 and 2 involve either additional or more bulky substituents attaching to rhodium, which should be less favorable if the linker group is bulky. Conversely, Reaction 3 has the bulky solvent acetonitrile leaving, which should be more favorable if the coordination environment around the rhodium is crowded.