Re(CO)5Br reacts with the to give compound Y + Br-. a. What is the most likely site...

Re(CO)₅Br reacts with the to give compound Y + Br^-.

a. What is the most likely site of attack of this ion on Re(CO)₅Br? (Hint: Consider the hardness (see Chapter 6 ) of the Lewis base.)

b. Using the following information, propose a structural formula of Y, and account for each of the following: Y obeys the 18-electron rule.

No gas is evolved in the reaction.

¹³C NMR indicates that there are five distinct magnetic environments for carbon in Y .

Addition of a solution of Ag⁺ to a solution of Y gives a white precipitate.

(See M. M. Singh, R. J. Angelici, Inorg. Chem. , 1984 , 23 , 2699.)