Because of their flexible frame, the minimal model systems in Figure can be used to systematically vary the bite angle θ for each choice of linker atom and coordination. The bite angle could influence the steric environment around the rhodium, and it may also modulate the metal's electronic configuration and that of the attached linker atoms. To investigate these effects, we performed relaxed scans of θ for each minimal model in 5 • increments from 70 • to 110 • , a range that encompasses the experimental bite angles of the full complexes. The difference in reactivity among these models should provide a baseline for the contribution of θ to the reactivity of the full complexes. Whether the bite angle is operative through steric or electronic effects can be seen by tracking ligand crowding and the atomic charges of rhodium and linker atoms throughout the scan. We performed the scan with each choice of N/P element and c 3 /c 4 coordination for the linker atom.