4 (10 pts) 7. Determine the structure of compound C, whose NMR is shown below. The...
4. Determine the structure of an unknown compound whose mass, IR, and 'H-NMR spectra are shown below.. MS 100 43 71 Structure of the unknown compound 50 114 0 40 60 80 100 120 m/z IR H-NMR δ (ppm) 0
IV. Identify the compound C&H1o0 on the basis of its IR and NMR spectra shown below. The broad triplet near δ 2.5 ppm disappears when D20 is added. Please draw the Lewis structure ofthe compound, assign all H NMR signals and the key IR stretching bands of functional groups. (16)
4. The H NMR spectrum shown below is for a compound with the formula CgHi9lN a) Determine the lOU for the compound b) Propose a structure for the compound c) Assign all H NMR signals to the hydrogens in your structure 6H 4H 4H 4H 1H
3. Determine the structure for the compound with formula C H15BrO from the given NMR spectra. Use an inverted tree diagram to determine the coupling for the signals at 2.75 and 3.05 ppm. The compound shows a signal at 1705 cm' in the IR. (20 pts 6H ЗН 2H 1H 1H 1H 1H PPM
7. Which compound below be H-1 NMR 0.9 ppm (quartet fits the following spectral data? (6 points) 1.2 ppm (sextet 2 hydrogens), 2.1 ppm (triplet, hydrogens), 4.3 ppm (singlet 3 hydrogens) C-13 NMR 5 signals 25 ppr ppm (CH2); 61 ppm: (CH3) 198 Ppm (C). IR strong peak 1735 cm Ignals 25 ppm (CH): 35 ppm (CH2), 46 ppm (CH2); 61 ppm: em Mass Spee parent M+ = 102 Mass Spec paren ou 0 H2 CH3 HjC Holo H3C- CC...
8. The 'H NMR spectrum below corresponds to a compound with molecular formula CH1202 Determine the structure, label the unique sets of hydrogens and then use these labels to mark the corresponding signals. (4 pts.) s, 9H s, 2H bs, 1H 10 6 2 P-03-15 ppm
nd os a structure for the compound X from the reaction below. 1. ????, CH,NH2 Compound x 5-aminopentanal a. You must label the unique hydrogens with letters (a, b, c..) and nun unique carbons (1, 2, 3..... for your 1H-NMR and 13C-NMR with the letters and numbers from you give rise to the signal. proposed structure. Label the signals in the r structure that b. Label the functional group peaks in the IR. c. Label the molecular ion peak in...
choose the correct structure for the compound whose nmr is
shown below
X3 Q10 G6 Choose the correct structure for the compound whose nmr is shown below. Chemical Formula: CsH N 2H 1Η nonet illu PPM CN CN
7. Consider the IR, 'H-NMR and C-NMR spectra of the compound with MF:C,H, 0. 4 pts Identify the structure of the unknown compound. MF C7H140 MW 114 $C 73.6 SH 12.4 Mass Spec. D m/ sbund. 27 35 relativ 114 11 Popyright © 1994 1.0 PPM 3.0 Proton NMA TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT 200 180 160 140 Carbon 13 NMR T 120 TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT 100 80 60 40 20 PPM O en og and 8. Consider the IR, 'H-NMR and C-NMR spectra of the...
the
first photo has the questions, the second are the H-nmr, C-nmr, and
IR.
6. 'H-NMR spectrum On the proton spectrum, interpretate ACTUAL 1H-NMR data, detailing chemical shifts, integrations, and splittings. Draw the structure of the unknown compound and label hydrogens (a, b, orc, etc...) for which signals. 7. 13C-NMR spectrum Draw the structure of your molecule and label carbons (a, b, or c, etc...) are responsible for which signals. 8. IR spectrum • Draw the structure of your molecule...