Bis amido Metal III Salts

A addition of the appropriate Lewis acid M Cb (M = Al, Ga, Sb) to the bis(amido)metal chloride  

A addition of MeaSiOTf (with elimination of MeaSiCI) (or AgOTf with elimination 

Treatment of [As N(Me)(CH2) NMe ][GaCl4] (n 2 or 3) with 2,3-dimethylbuta-l,3-diene yielded the crystalline salts 24 and 25, in which the positive charge on the cation was 

rather than Aj-, centred. The Lewis acid character of the arsenic atom of I----------------1 

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The bis(amido)metal(III) chlorides have been used extensively as sources of bis(amido)-metal(III) salts (see Section The chloride 16 (M = Sb, R = Bu )... 

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