# What is the name of SnBr_4?

$\text{Stannic bromide........}$
And you could also call this $\text{tin tetrabromide}$, or $\text{tin(IV) bromide}$...........
Becaause it forms a (a solid) 1:1 complex with trimethylphosphine, you can use this is as a solid reagent to transfer 1 equiv of $P M {e}_{3}$ to a transition metal complex.