Problem 3\ Consider the following reaction\ A) What is the most likely site of attack for the alkoxide anion at

Re(CO)_(5)Br

? (1pts)\ B) Propose a structure for compound A using the following information. Show your valence electron count and identify the unique

^(13)C

environments in your structure. (4pts)\ i) A has a valence electron count of

18e^(-)

.\ ii) No gas is evolved during the reaction.\ iii)

,^(13)C

NMR shows 5 distinct resonances for carbon atoms in

A

.\ iv) Addition of

Ag^(+)

to a solution of

A

causes formation of a white precipitate

(AgBr)

.

Consider the following reaction A) What is the most likely site of attack for the alkoxide anion at Re(CO)5Br ? (1pts) B) Propose a structure for compound A using the following information. Show your valence electron count and identify the unique 13C environments in your structure. (4pts) i) A has a valence electron count of 18e : ii) No gas is evolved during the reaction. iii) 13C NMR shows 5 distinct resonances for carbon atoms in A. iv) Addition of Ag+to a solution of A causes formation of a white precipitate ( AgBr)