Organometallic Chemistry -- Multistep synthesis question

[Micke]

1. Question
Start with a organometallic (Benzene)M(Co)₃see picture below) and React it with R^- to get A, Then react A with I₂ to get B and react A with H⁺ to get C. What is A,B and C?

3. Attempt at answering the question.
I am not sure about the hapticity of Benzene. ? But i am prety sure that the first step is a Nucleophilic addition. Where R adds to the Metal, but i am not sure if one CO ligand will leave first or not.

I am more unsure about where the protonation will occur in C and I can not for my life figure out what B will be when A are reacted with I₂. Sorry for the little information but i am desperate and do not know what else to write.

 

[Asim Riaz]

A: The product of the reaction between benzeneM(CO)3 and R- is a carbocation. B: The product of the reaction of A with I2 is a diorganyl iodide. C: The product of the reaction of A with H+ is an alcohol.