Trimethylamine-monoiodoborane

The receiver flask is stoppered, the condenser delivery tube C is opened, and a magnetic stirring bar is added through addition 

Outlet A is now stoppered with a ground joint, the ice bath is replaced with a heating mantle, and the reaction mixture is brought slowly to incipient reflux over a 10-minute period in order to avoid excessive foaming. If at this time the solution is not transparently amber, or if the reflux is pale pink, an additional 0.15-0.30 g. of trimethylamine-borane is added in small portions through the top of the condenser, and reflux is continued for another 10 minutes. Thereafter 70 ml. of solvent is stripped off over a 10-minute period. 

The white crystalline solid melts at 73°C.4 Like the other haloboranes, it is soluble in carbon tetrachloride and benzene, is insoluble in saturated hydrocarbons, but reacts very rapidly with methanol. It should be stored in tightly sealed, dark containers in a desiccator or a dry-box otherwise its storage life is very short. 

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