Valine is an essential amino acid. What peaks listed below would be expected in the IR spectrum of valine? Select the best answer from the choices below (not all peaks in the IR spectrum are listed). NH₂ OH Peaki- just over 3000 cm¹ Peak: - just under 1000 cm Peak - Around 150 cm OPeaks and z O Peaks 1, 2 and 3 Peaks 2 and 3 Peaks and

The C13NMR spectrum shown below contains seven signals that correspond to the seven carbons identified in structure 2. Use an C13NMR table to help match each carbon to one of the signals in the spectrum.

Intrpt as many of the main peaks in the following spectra as you can No handwriting ok

find the structure of this nmr and explain why you think it matches the spectrum based on integartion, multiplicity and so on?

3. Given the following molecule, please (1) draw what you might predict its standard spectrum and DEPT 90 and DEPT 135 spectra would look like, and (2) based on that picture, assign each of the numbered carbons on the original structure to a peak in the standard 13C spectrum. I 1 2 6 4 Br 2 3 7 Br 5 Standard 13C 220 200 180 160 140 120 100 80 60 40 20 0 DEPT 90 220 200 180 160 140 120 100 80 60 40 20 DEPT 135 220 200 180 160 140 120 100 80 60 40 20 0

Question 3 Chose the compound whose structure is the most consistent with the IR spectrum. 1% O A B OD 80 60 40 20 0 T 4000 A 3500 3000 B 2500 2000 Wavenumber (cm-¹) C 1740 cm-¹ 1500 1000 EN D

Lable the peaks of diphenylmethanol (product of benzophenone) and explain why each peak is the way it is Thank you

Identify the following spectra. Assign all pertinent peaks (~5-6 peaks). Place the structure of the compound in the box on the lower left-hand corner of spectrum.

Using the following spectra and other information provided, identify the compounds, and all pertinent peaks are assigned in the spectra (correct compound, labeling proton spectrum, labeling carbon spectrum) Label the peaks on the spectrum and place the structure of the compound in the box on the right side of the spectrum.

Identify each signal showed in the spectra for both C8H8I2 and C4H9Br. Determine the multiplicity and integrity for each signal.