(a) One gallium-containing product, A, was obtained from the following reaction, carried out in Et₂O solvent:

The room temperature, solution ¹H NMR spectrum of A showed the following signals: δ 4.90 (s, 2H), 3.10 (t, 4H), 2.36 (t, 4H), 2.08 (s, 12H) ppm, and the ¹³C NMR spectrum exhibited three signals at δ 61.0, 50.6 and 45.7 ppm. The highest mass peak in the mass spectrum of A is m/z = 230. Structural data for A reveal that the Ga atom is 5-coordinate. Suggest the likely identity of A, and propose its structure. 

(b) Compound A can function as a Lewis base. Rationalize why this is the case, and suggest a product for the reaction of A with Me₃N·GaH₃.

Transcribed Image Text:

N'GaH₂Cl + Me₂N N Li NMe₂