The iridium(IV)hexachloride anion reacts with triphenylphosphine in diethylene glycol under an atmosphere of CO to give Vaska’s compound (Compound A). Addition of excess carbon monoxide produces a five-coordinate species (Compound B). Treatment of B with NaBH4 in ethanol gives Compound C. (i) Draw the structures of the three complexes. (Show metal stereocentres)

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

a:

by the combination of an unlimited number of elements

b. examine and describe cells