6. Use the HNMR and IR spectrum below to identify the compound and analyze peaks. C6H12O2 DU=(2C+2-H+N-X)/2 Intensity LDD 5D 10 10 C6H12O2 9 8 7 6 B A 3 4 3 2 1 0 ppm 5 Chemical shift (8) D 4800 3000 2000 1500 1000 500 cm-1

determine compound based on this spectrum data: MS Data- m/z = 112(45.45 %), 113 (3.961 %), and 114 (0.195%) IR Peaks-0.9 ppm (t, 6H), 1.5 ppm (dt, 4H), 2 ppm (td, 4H), 5.4 ppm (tt, 2H) C NMR Peaks- 15, 24, 36, and 127 ppm

6) The compound with the molecular formula C4H10O was synthesized. It was further analyzed using IR spectroscopy. The spectrum of the compound is illustrated below. Identify the structure of a compound. Justify your answer. Identify as many peaks on its IR spectrum as possible. (5 points) 100 80 60 60 %T 40 20 20 0 4000 R2020-93124TM 3000 2000 1500 1000 400 Wavenumber [cm-1]

A student performed a series of reactions and obtained the spectral data provided. The reaction sequence is shown below.. What are the structures for A, B, C, and D? Compound B NMR (relative integrated areas below peaks) CH;CH,O°N 1. BHTHF N-bromosuccnimide A CH;CH,OH B 2. H,O,/OH- D hv reflux Compound A NMR (relative integrated areas below peaks) PPM 5 Compound B IR INFRARED SPECTRUM PPM 5 1 6 0.8 Compound A IR INFRARED SPECTRUM 0.6 0.8 0.4 0.4 0.2- 3000 2000 Wavenumber (cm-1) 1000 The MS of compound B shows an M+ peak at 198 and an M+2 peak at 200 with a relative abundance of 1:0.97 2000 Wavenumber (cm-1) 3000 1000 Transmitance Relative Transmittance

Identify the following in the given IR Mass spectrum. Compound 1 Mass Spectroscopy: Interpretation of peaks:

Which compound is correct for the given NMR spectrum? |(3) (2) (2) 2 1 PPM CN 1) 2) 3) Structure 1 O Structure 2 Structure 3

What compound is consistent with the NMR spectrum below? d6-DMSO solution F0.60 0.55 -0.50 -0.45 -0.40 -0.35 -0.30 -0.25 -0.20 -015 -0.10 -0.05 -0.00 0.05 6.5 5.5 5.0 4.5 4.0 6.0 f1 (ppm) 7.5 7.0 HOI HO. но но (A) (B) (C) (D) For

The spectra (IR, 'H NMR, ®C NMR and MS) of an unknown compound are shown in the following spetra. Based on these spectra, determine the structure of the unknown compound. Explain your answers clearly for each spectrum. Ahserbance / IR 2000 Wavenumbers /em 13C NMR 130-128 14 61 145 22 167 160 140 120 200 180 100 PPm 80 60 40 20

Which molecule has the IR spectrum below. A B C D A Transmitance 1 0.8 0.6 0.4 0.2 3000 B INFRARED SPECTRUM 2000 Wavenumber (cm-1) C 1000 D 'Н

5. Determine the structure of a compound with a molecular formula of C4H8O2 with the 13C and 'H NMR spectra below. No peaks exchange with D20 on the 'H NMR spectrum. ada I=2 |=3 1=3 1.2 4.0 4.0 3.0 2.0 1.0