aryl borane a lewis base adduct of an aryl borane or a mixture thereof is injected directly into a reservoir of liquid ammonia contained in a pressure vessel that is initially held at low temperature 0 u00b0 c or below and atmospheric pressure 1 bar it should be appreciated that the present invention may also include borane species such as an ether adduct of borane an ether adduct of an alkyl borane an ether adduct of an aryl borane or mixtures thereof an example of such a borane species includes a borane tetrahydrofuran complex furthermore the present invention may also include borane species such as a sulfide adduct of borane a sulfide adduct of alkyl borane a sulfide adduct of aryl borane or mixtures thereof an example of such a borane species includes dimethylsulfide borane moreover the present invention may also include borane species such as an amine adduct of borane an amine adduct of alkyl borane an amine adduct of aryl borane or mixtures thereof example of such borane species include diethylaniline borane 2 picoline borane pyridine borane tertbutylamine borane triethylamine borane or mixtures thereof in this preferred embodiment the borane species is first added to an organic solvent such as.