-values and splitting patterns (singlets, doublets, triplets, etc.). Two-Dimensional NMR:

Pedagogically, the fourth solution set raises the bar by introducing stereochemical assignments and conformational reasoning. Coupling-constant analysis (e.g., Karplus relationships) is applied to deduce dihedral angles and thus relative stereochemistry in vicinally substituted systems. Where stereochemistry cannot be decisively assigned from 1D NMR alone, the solutions demonstrate the use of NOE/NOESY data or propose further experiments (coupled with reasoning about expected outcomes). This models scientific thinking: when data are insufficient, the proper response is to design targeted follow-up measurements rather than to overcommit to a single speculative assignment.

Understanding Pavia’s Introduction to Spectroscopy (4th Edition): Solutions and Study Guide