Question

Interpreting NMR spectra is a skill that often requires some amount of practice, which in turn, necessitates access to a collection of NMR spectra. Virtual Chemlab Organic has a spectra library containing more than 700 'H NMR spectra. In this assignment, you will take advantage of this by first predicting the NMR spectra for two closely related compounds and then checking your predictions by looking up the actual spectra in the spectra library. After completing this assignment, you may wish to select other compounds for additional practice. 1. Write the IUPAC names for the following two structures: 2. Predict the NMR spectra for each of these two compounds by listing in the NMR tables below, the chemical shift, the splitting, and the number of hydrogens associated with each predicted peak Sort the peaks from largest chemical shift to lowest. 'H NMR Peak Chemical Shift (5) Multiplicity Peak Chemical Shift (5) Multiplicity 7 Structure: 2 8 3 9 4 10 5 11 6 12 'H NMR Peak Chemical Shift (6) Multiplicity H Peak Chemical Shift (5) Multiplicity 1 7 Structure: 2 8 قيا 9 4 10 5 11 6 12 Specify the multiplicity as a singlet (s), doublet (d), triplet (t), quartet (9), or multiplet (m). Specify the number of hydrogens associated with each peak.