Chapter 25, Problem 25.72P

Three isomeric compounds A, B, and C, all have molecular formula ${\text{C}}_{\text{8}}{\text{H}}_{\text{11}}\text{N}$. The ${}^1\text{H}\text{NMR}$ and IR spectral data of A, B, and C are given below. What are their structures?

Compound A: IR peak at $3400{\text{cm}}^{-1}$ Compound B: IR peak at $3310{\text{cm}}^{-1}$

Compound C: IR peaks at $3430$ and $3350{\text{cm}}^{-1}$