QUESTION 23 A compound of molecular formula C5H1202 compound has strong infrared absorption at 3300 to 3400 cm-1. Its 1H-NMR spectrum has three singlets at 8 0.9, 3.45, and 3.2 ppm; relative integrals 3:2:1. The 13C-NMR spectrum shows three signals all at higher field than 5 100 ppm. Which of the following compounds best fits this data? O a. 2,2-Dimethyl-1,3-propanediol O b.2,4-Pentanediol Oc 1,3-Dimethoxypropane O d. 1,5-Pentanediol

QUESTION 23 A compound of molecular formula C5H1202 compound has strong infrared absorption at 3300 to 3400 cm-1. Its 1H-NMR spectrum has three singlets at 8 0.9, 3.45, and 3.2 ppm; relative integrals 3:2:1. The 13C-NMR spectrum shows three signals all at higher field than 5 100 ppm. Which of the following compounds best fits this data? O a. 2,2-Dimethyl-1,3-propanediol O b.2,4-Pentanediol Oc 1,3-Dimethoxypropane O d. 1,5-Pentanediol

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter19: Aldehydes And Ketones: Nucleophilic Addition Reactions

Section19.SE: Something Extra

Problem 87AP: The proton NMR spectrum for a compound with formula C10H12O2 is shown below. The infrared spectrum...

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Answer for both: 1) Propose a structure consistent with each of the spectral data: C5H10O: IR peak at 1740 cm-1NMR (ppm): 1.15 (triplet, 3H), 2.30 (quartet, 2H), 1.25 (triplet, 3H), 4.72 (quartet, 2H 2) Propose a structure for compound Z, which has the following spectroscopic properties MS: M+ = 88IR: 3300 cm-11H NMR: 0.85 d (6H doublet); 1.40 d (1H multiplet); 2.68 d (2H quartet); 3.55 d (2H triplet)Broadband decoupled 13C NMR: 322.7, 25.0, 41.8, 60.5 dDEPT-90: 25ppmDEPT-135 positive peaks at 19 ppm, 25ppm, negative peaks at 41.8, 60.5 d
( plz look carefully spectra of both H1 nmr and 13 C peak are given , provide the structure , the molecular formula is C6H12O: both 1H and 13C are provided. Assign the peaks as designated as a,b,c….. and 1,2,3….. to your structure. detail explanation needed dont copy
ASAP compound C 7 H 14 O has the proton NMR spectrum shown below. Draw areasonable structure that is consistent with this data. calculate the R value first. -2.35 ppm is a singlet, and integrates for 2 H; the signal at about 2.15ppm is a singlet (s), and integrates for 3 H; the signal at about 1.00 ppm is a singlet (s), and integratesfor 9 H.
PLease asap compound C 7 H 14 O has the proton NMR spectrum shown below. Draw areasonable structure that is consistent with this data. calculate the R value first. -2.35 ppm is a singlet, and integrates for 2 H; the signal at about 2.15ppm is a singlet (s), and integrates for 3 H; the signal at about 1.00 ppm is a singlet (s), and integratesfor 9 H.
Orgonic Chemistry Need help to predict NMR molecule C14H14O2 ‘s structure. Given： H-NMR for H-1: δ 7-8 , multiplicity, 2H; δ 5.4,doublet,1H; δ 5.2, quintet, 1H; δ 2.1,doublet, 3H; C-NMR for C-13: 196, 144, 135, 134, 132, 127, 19 Please check if the structure I draw is correct ？how to put every piece together ？
Elemental analysis determined unknown Compound G to contain 40.0 % carbon, 6.7 % hydrogen. Compound G had an M+ = 60 m/z on its MS. Its IR displayed three absorbances: strong at 1710, strong below 3000, and broad from 2500 to 3500. The proton NMR showed an absorbance at 1.7 ppm (lowest whole number ratio of H =3), and an absorbance at 11.5 ppm (lowest whole number ratio of H = 1). Compound G was able to turn blue litmus paper red, and neutralize a base. What is Compound G? CH3CO2H Formaldehyde HO \ C = CH2 / HO CH2(OH)CHO CH(OH)=CH(OH)
Considering IR spectroscopy, which of the following statements is incorrect? Question 34 options: Symmetrical C=C bonds and C≡C bonds give signals at lower wavenumbers compared to unsymmetrical bonds Primary amines produce two signals resulting from symmetric stretching and asymmetric stretching Carboxylic acids exist as dimer due to hydrogen bonding and thus produce a broad signal at 2200-3600 cm-1 and a characteristic signal due to C=O at approx. 1700 cm-1 Concentrated alcohols give rise to broad signals while dilute alcohols give rise to narrow signals C=O bonds produce strong signals in an IR spectrum while C=C bonds often produce a weak signals
Please show work 1. Compound A has molecular formula C5H10O. It shows three signals in the 1H-NMR spectrum - a doublet of integral 6 at 1.1 ppm, a singlet of integral 3 at 2.14 ppm, and a quintet of integral 1 at 2.58 ppm. Suggest a structure for A and explain your reasoning.
Molecular formula of an unknown compound is, C10H14O. Proton NMR: 1.3 (6H, doublet), 3.2 (1H septet), 4.6 (1H singlet), 2.25 (3H, singlet) 6.7 (1H, singlet), 6.9 (1H, doublet), 7.2 (1H, doublet). What is the name of an unknown compound? 2-isopropyl-5-methylphenol 2-(p-tolyl)propan-2-ol 1-isopropyl-4-methoxybenzene 4-isopropylphenyl)methanol
A compound of unknown structure gave the following spectroscopic data: Mass spectrum: M+=88.1 IR: 3600 cm-1 1Î—NMR: 1.4 Î´ (2 H, quartet, J=7 Hz); 1.2 Î´ (6H, singlet): 1.0 Î´ (1 H, singlet); 0.9 Î´ (3 H, triplet, J=7 Hz) 13CNMR: 74, 35, 27, 25 Î´ (a) Assuming that the compound contains C and H but may or may not contain O, give three possible molecular formulas (b) How many protons (H) does the compound contain? (c) What functional groups(s) does the compound contain? (d) How many carbons does the compound contain? (e) What is the molecular formula of the compound? (f) What is the structure of the compound? (g) Assign peaks in the moleculeâ€™s 1HNMR spectrum corresponding to specific protons.
Compound A, a hydrocarbon with M+=96 in its mass spectrum, has the 13C spectral data given below. On reaction with BH3, followed by treatment with basic H2O2. A is converted into B, whose, 13C spectral data are also given below. Propose structures for A and B. Compound A Broadband-decoupled l3C NMR: 26.8, 28.7, 35.7, 106.9, 149.7 DEPT-90: no peaks DEPT-135: no positive peaks; negative peaks at 26.8, 28.7, 35.7, 106.9 Compound B Broadband-decoupled 13C NMR: 26.1, 26.9, 29.9, 40.5, 68.2 DEPT-90: 40.5 DEPT-135: positive peak at 40.5 ; negative peaks at 26.1, 26.9. 29.9, 68.2
Draw a full Lewis structure for each following compound. Include lone pairs andnon-zero formal charges as necessary.a. HCN, hydrogen cyanideb. Si(OH)4, orthosilicic acid c. and d. are in the attached photo. e. Write compound in ques=on 4 that should exhibit a strong, sharp peak at 1712cm–1 in its IR spectrum.