(b) order from most deshielded to most shielded:
d > c > e > b > a
(c) what are the #H's in each signal?
a = 9 H
b = 2H
c=2H
d=2H
e=3H
(d) what is the coupling pattern for each signal?
a = singlet
b = triplet
c = triplet
d = quartet
e = triplet
***I think the only thing you missed was the number of hydrogen in signal a, which is 9 and not 3
Chem 10 Lab 10 3. A. For the following molecule CH: CHOCHCHICCHCHI: Tub c d e...
3. For the following molecule CH, CH;C-CH2CH.CCH.CH CH3 a) Label the magnetically different H's on the molecule. b) Arrange the labels in the order you would expect (in descending ppm) from most deshielded to most shielded. c) What are the #H's in each signal? d) What is the coupling pattern for each signal? B. For the following molecule -CHCHCH; CHCH_CH; a) Label the magnetically different H's on the molecule. b) Arrange the labels in the order you would expect (in...
Could anybody help me answer the selected questions?
8.8 Identify the compounds of the given molecular formulas that show a. One 'H NMR signal: CHO CH C.H.Br, b. Two 'H NMR signals: CH.CL CHO CHO, CHOCI 8.9 8.10 How many 'H NMR signals will each of the compounds below show? a. (CH, CHỊCH, d. CH.COCH,CH.COCH, b. CH,COCOOCH, e. CH.COCH.CH.COOCH, c. CH,COCH,COCH, L. CHCOCH CH(CI)COCH, Suggest structures consistent with the following 'H NMR data: а. Сно CHCI triplet (1.0 ppm, 3H)...
CHEM 135 CLG 10 SP20 Deduce the structure for the following compound on the basis of its proton NMR spectra and molecular formulas. C6H12O2; d = 0.95 ppm (triplet, 3H) 8 = 1.39 ppm (multiplet, 2H) d = 1.62 ppm (multiplet, 2H) d = 2.05 ppm (singlet, 3H) 8 = 4.08 ppm (triplet, 2H)
21) Which of the following is not a nucleophile? A) Br B) FeBr3 C) NH3 D) - E) CH3OCH3 22) An unknown compound, C9H12, gave the following NMR spectrum: Triplet at 1.21 ppm (3H) Singlet at 2.30 ppm (3H) Quartet at 2.60 ppm (2H) Singlet at 7.04 ppm (4H) What is the structure of the compound? A CH,CH,CH, v. CHA CH; CH2CH3 СН3 V. CH CH3 CH CHCH3 СН3 CH3 A) 1 B) II C) III D) IV E) V
and draw the Structures Determine the Hydrogen Deficiency Index Challenges: C4H8O2 1.2 8: 3H triplet 3.0 8: 2H quartet 3.6 8: 3H singlet CoH14 1.3 8: 9H singlet 7.2 8:5H multiplet C&H;N 3.7 8:2H singlet 7.2 8:5H singlet C.H.CI,O2 1.4 8: 3H triplet 4.3 8: 2H quartet 5.9 8: 1H singlet CsH1002 1.2 8:6H doublet 2.0 8:3H singlet 5.0 8: 1H septet 'H NMR Practice Problems Best thing is to first determine the Hydrogen Deficiency Index so you know the...
20 3.64 Unsat. Index = (2C+2-H-X +N)/2 = 15 6.85 7.00 d=2.44 ppm, Compound 18a. CHN quartet, 2H 1.0 7.02 6.84 108 c=3.64 ppm, 245 a = 7.01 ppm, doublet, 2H b = 6.85 ppm, doublet, 2H 05 singlet, 2H 241 e=1.06 ppm, triplet, 3H 0,0 8.0 75 70 6.5 60 55 8, ppm 30 1) MeMgBr 12) H20, H30* 5.0 45 40 35 25 20 1.5 1.0 0.5 3D 100 205 5500-5000) e = 2.05 ppm, singlet, 3H f...
On each the following IR spectra, circle and indicate the most important stretching signal from the following choices:N-H, O-H, CEN, CEO, C-O, Top, IR spectrum of Compound 18a: C11H1402Bottom, IR Spectrum of Compound 18b: C.H120. write your answer on the corresponding square provided 100 0 1000 LOO khmer WA 000 200 1000 50 VENUHRERI- 6 18. Draw the structures of Compound 18a. and 18b. (18 pts), clearly indicate your assignments of all proton resonances (8 pts). Calculate the Unsaturation Index...
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On each the following IR spectra, circle and indicate the most important stretching signal from the following choices:N-H, O-H, CEN, CEO, C-O, Top, IR spectrum of Compound 18a: C10H41N; Bottom, IR Spectrum of Compound 18b: C11H140. write your answer on the corresponding square provided (2.5 pts each, 5 pts total) op m TARTIKEL p ฉน้อย โย่อ มีอง แอล 1000 Sbo WTVENUMBER LOD , " ใจ" 0 3040 Red ICCP) HAVENUTERII 18. Draw the structures of Compound 18a. and 18b. (18...
draw the structures of compound 18a and 18b. clearly indicate your
assignments of all proton resonances
On each the following IR spectra, circle and indicate the most important stretching signal from the following choices:N-H, O-H, CEN, CFO, C-O, Top, IR spectrum of Compound 18a: C14H14Oz: Bottom, IR Spectrum of Compound 18b: CH120. write your answer on the corresponding square provided (2.5 pts each, 5 pts total) M M 6 18. Draw the structures of Compound 18a. and 18b. (18 pts),...