1. (50 pts) Consider the following catalytic cycle for the Dupont dimerization of butadiene and ethylene (ethene) to produce 1,4-hexadiene. a) (30 pts) Label each step identified with a box and describe what is happening (note that there may be more than one choice per step as written - if so, make sure that you list the steps in the correct order). P= P(OR); in the catalytic cycle. The step #'s are for part c). CI CI... Rh LP(OR), P(OR) (RO)3P + 2P CI CI17... CH bu Rh PR H H fo CI C. C.. ROP PR P CI CI *** CI/I... Clin bill Rh p P