This compound has a molecular formula of CgH100. Given its molecular weight and this spectral data, what is it? IR: Short, messy peak between 3000 to 3100 cm', stronger, rough peak below 3000 cm1, strong peak at approx 1690 cm1 NMR: 7.9 ppm, multiplet, ratio of 2; 7.3 ppm, multiplet, ratio of 1; 7.1 ppm, multiplet, ratio of 2; 3.0 ppm, quartet, ratio of 2; 1.2 ppm, triplet, ratio of 3

Identify peaks in the 1H spectrum that correspond to the t-butyl group, the phenyl groups, and the proton that is α-to the carbonyl. Peak Expected Observed A: Chemical Shift 6.0-8.5 ppm (aromatic) 7.38 ppm A: Splitting Multiplet Multiplet A: Integration 5H 5H B: Chemical Shift 6.0-8.5 ppm (aromatic) 6.85 ppm B: Splitting Multiplet Multiplet B: Integration 5H 5H C: Chemical Shift 5.0-9.0 ppm (amide) 6.19 ppm C: Splitting Singlet Singlet C: Integration 1H 1H D: Chemical Shift 1.0-5.0 ppm (amino) 5.52 ppm D: Splitting Multiplet Multiplet D: Integration 1H 1H E: Chemical Shift 1.4-1.8 (alkyl) 1.33 ppm E: Splitting Singlet Singlet E: Integration 3H 3H

Given the following NMR data, find the unknown compound. a. Identify the molecular formula; find IHDb. Identify the 1H and 13C NMR signals

The1H NMR spectrum of CH3OH recorded on a 500 MHz NMR spectrometer consists of two signals, one due to the CH3 protons at 1715 Hz and one due to the OH proton at 1830 Hz, both measured downfield from TMS. (a) Calculate the chemical shift of each absorption. (b) Do the CH3 protons absorb upfield or downfield from the OH proton?