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- A compound has the molecular formula: C4H8O2 and gives the following H-1 NMR spectrum. Give the functional groups responsible for the signals, which integrate as 2H, 3H and 3H (downfield to upfield). nmrsim presentation 1 1 C: Bruker TopSpin3.5p17\examdata elle 3.0000 SODEŹ quartet is CH₂, singlet is CH3 and triplet is OCH3. quartet is CH3, singlet is OCH₂ and triplet is OCH3 quartet is CH₂, singlet is OCH3 and triplet is CH3. quartet is OCH₂, singlet is CH3 and triplet is CH3. quartet is OCH₂, singlet is CH₂ and triplet is CH3. POSE (ppm) 10 [rel]Draw the structure of the compound identified by the simulated 'H NMR and 13C NMR spectra. The molecular formula of the compound is C1,H120. (Blue numbers next to the lines in the 'H NMR spectra indicate the integration values.) Η NMR 1H 2H 2H 2H 2H 3H| 10 8 4 2 8 (ppm) 13C NMR 220 200 180 160 140 120 100 80 60 40 20 d (ppm)13C NMR Spectrum (50.0 MHz, CDCI, solution) DEPT proton decoupled 200 ¹H NMR Spectrum (200 MHz, CDCI, solution) C₂H₂ NO ₂ expansion 3.0 160 2.0 120 1.0 ppm 10 9 8 7 6 Determine the structure of the compound 5 solvent 80 4 40 3 2 08 (ppm) 1 TMS 0 8 (ppm)
- A compound has the molecular formula: C4H8O2 and gives the following C-13 NMR spectrum. Provide the most likely functional groups for each signal. nmrsim presentation 1 1 C:Bruken Topspin3.5pl7 examdata -170.7658 150 100 d 170.8 (O CH3) ; 60.4 (OCH2); 20.8, 14.1 (2 x C=0) 8170.8 (0 CH₂); 60.4 (OCH₂); 20.8, 14.1 (2 x CH3). 8 170.8 (CH3); 60.4 (C-0); 20.8, 14.1 (2 x OCH₂) 8170.8 (C=0); 60.4 (OCH₂); 20.8, 14.1 (2 x CH3). 8170.8 (C) ; 60.4 (O CH2); 20.8, 14.1 (2 x O CH3) -60.4293 50 -20.7902 -14.1385 [ppm] [+]Draw the structure of the compound identified by the simulated 'H NMR and C NMR spectra. The molecular formula of the compound is C,0H,O. 12 (Blue numbers next to the lines in the 'H NMR spectra indicate the integration values.) H NMR 1H 2H 2H 2H 2H|| 3H 10 8. 4 (dd) g 13C NMR 220 200 180 160 140 120 100 80 60 40 20 8 (ppm) Deduce the structure from the spectra. Select Draw Rings More EraseNH2 A B Proton NMR: 2.7 (triplet, 2H), 1.7 (nonet, 1H), 1.5 (quintet, 2H), 1.4 (broad singlet, 2H), 1.2 (quartet, 2H), 0.9 (doublet, 6H) Carbon-13 NMR: 44, 37, 30, 28, 23 IR (below): D 4D00 3000 2000 1500 1000 500 HAVENUMB ERI I-Z I-Z TRANSHETTANCEI
- Draw the structure of the compound identified by the simulated 'H NMR and ¹3C NMR spectra. The molecular formula of the compound is C₁0H₁2O. (Blue numbers next to the lines in the 'H NMR spectra indicate the integration values.) ¹H NMR 1H 2H 2H 2H 2H 3H IT 111 10 8 6 8 (ppm) 13C NMR III. 220 200 180 160 140 60 40 20 100 8 (ppm) Deduce the structure from the spectra. Select Draw More CHO 2 Ć Rings 120 80 Erase Q 2 Q2. (Chapter 13 - Q58b) The compound whose H NMR spectrum is shown has the molecular formula C7H7B1. Follow the following questions to predict the unknown structure. Chem. shift Rel. area 2.31 1.50 701 1.00 7.35 1.00 TMS 10 7 6 O ppm 4 3 2 Chemical shift (8) e20s Cenge leaming 2(a) Degree of the unsaturation of this compound is= 2(b) The two distinct peaks in the aromatic region of the H NMR indicate that compound is .disubstituted = 2(c) The splitting pattern of the peak at 2.31 ő is = 2(d) The group that corresponds to the splitting pattern in 1(c) is = 2(e) This compound has the plane of symmetry Yes or No = 2(f) The name of the unknown compound = IntensityYOU MUST SHOW YOUR WORK Molecular Formula: C3H,O; what is the structure proposed from the below data? IR Spectrum L00 'H NMR Data 200 200 Signal Ha Chemical Shift 8.00-8.42 Integration 4H Multiplicity multiplet Proposed Identity # Neighbors 1BC NMR Data 125.5, 131.1, 133.8, 162.3 ppm TERNSHITTENCEI
- 9 ¹H-NMR Spectra 2 M.F. = C₁₁H₁2O 15 15 -00 8 15 15 7 1 S 6 O) 15 15 5 PPM 4 21 -♡ 3 2 3) 05. 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 1.0An unknown compound X has the molecular formula C6H140. Compound at 3000 cm. The 'H NMR spectral data of compound X is given below. W Here PPM values are given in delta symbol. absorption 8 ratio triplet 1.0 3 singlet 1.1 quartet singlet 1.5 3.5 3 623 6 O C) III O A) I O D) IV O B) II I 11 OH t III IV