(a) One gallium-containing product, A, was obtained from the following reaction, carried o...

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

The room temperature, solution 'H NMR spectrum of A showed the following signals: 6 4.90 (s, 2H). (t, 4H), 2.36 (t, 4H), 2.08 (s, 12H) ppm, and the 13C NMR spectrum exhibited three signals at 6 61.0, 50.6 and 45.7 ppm. The liighest mass peak in the mass spectrum of A is mjz = 230. Structural data for A reveal that the Ga atom is 5-coordinate. Suggest the likely identity of A, and propose its structure,

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(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 Mc3N GaH3.