please help with all three questions
7-7
When PEt reacts with Mo(CO) the final product is fac-Mo(CO)
(PEt,)3: Substitution goes no farther than trisubstitution. Give two
reasons why this might be so. Account for the stereochemistry of the product. [Hint: Why would production of the mer-isomer be not as likely?] The chiral Mn complex below undergoes racemization according to the equation shown.
7-8
PhMe/25 C
PPh3 NO
Ph
t1/2 = 21 min. Rate 1/[PPh3]
Ph
NO
NO Ph
Propose a mechanism that is consistent with the rate being affected
inversely by the concentration of PPh, The reaction below shows a rate law that is second order in substrate metal complex and first order in phosphine. The AS* is negative, and an intermediate was isolated and shown to be (PPh,)(CO)Mn(NO) Propose a mechanism for the reaction. What is the nature of the bonding of the NO ligand at each stage of the reaction?
7-9
(CO)4Mn(NO)+ PPh
>(PPh,)(CO),Mn(NO)