The 29Si NMR spectrum of compound 4.15 shows a triplet with a coupling constant of 194Hz.(...

The 29Si NMR spectrum of compound 4.15 shows a triplet with a coupling constant of 194Hz.

(a) Rationalize these data and

(b) predict the nature of the signal in the 1H NMR spectrum of 4.15 that is assigned to the silicon-bound protons. [29 Si: 4.7% abundant; I = ]