a)
We have C4H8O
degree of unsaturation = ( nC x 2 + 2- nH) /2
= ( 4 x 2 + 2 - 8) /2 = 1 hence we have 1 double bond
IR peaks confirm C=C peak at 1665 cm-1 and we had H-NMR peaks at 5-6 to confirm this.
Since we had three peaks at C=C H-NMR region we had CH=CH2 as last part.
We had CH3 peaks at 1.4 ppm and OH peak at 1.5 ppm
Joining remaining we get
b)
The compound is 1,2-dibromo-1,1-difluoroethane. The spectrum shows a triplet because of the coupling of the protons with the two fluorine atoms on the adjacent carbon. The coupling constant 16.0 Hz corresponds to the coupling between H and F nuclei.
Question 12 of 20 Map dub w H. Freeman and Company presented Organic Chemistry Peter Vollhardt...
The 1H NMR spectrum below corresponds to an unknown compound with the molecular formula C4H7Cl. Deduce and draw the structure of the molecule from the data below. Clearly show stereochemistry where applicable. 3 H H NMR 2 H 1 H (CH3)4Si 1 H 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 300-MHz H NMR spectrun ppm (o)
The 1H NMR spectra corresponds to an alcohol with the molecular formula C5H12O. Deduce the structure from the spectra. com/Ibiscms/mod/ibis view.php?id 3077567 O 10/17/2016 08:30 AM A 0/100 Gradebook Print Calculator Periodic Table Question 2 of 5 Map Organic Chemistry w.H. Freeman and Company presented by Sapling Learning The H NMR spectra corresponds to an alcohol with the molecular formula CsH2O.Deduce the structure from the spectra. H NMR 6 H 3H 1 H 2 H 09 0.8 0.7 15 1,4...
9) In a published synthetic procedure, acetone is treated with ethenyl(vinyl) magnesium bromide, and the reaction mixture is then neutralized with strong aqueous acid. The product exhibits the 'H NMR spectrum shown below. What is its structure? When the reaction mixture is (improperly) allowed to remain in contact with ethe aqueous acid for too long, an additional new compound is observed. Its 'H NMR spectrum has peaks at d = 1.70 (s, 3H), 1.79 (s, 3H), 2.25 (broad s, 1H),...
Deduce the structure based on the information below: Concepts: organic spectroscopy, organic chemistry Problem 69 2288 IR Spectrum (liquid film) 4000 3000 1200 800 2000 V (cm 1600 ) Mass Spectrum 88 TTTTTTTTTTT % of base poak No significant UV absorption above 220 nm M+ = 94 < 1%) 40 80 160 200 240 280 120 m/ 13C NMR Spectrum (20.0 MHz, CDCI, solution) TMS solvent prolon decoupled 200 160120 80 40 0 8 (ppm) 1H NMR Spectrum (100 MHz,...
Deduce the structure based on the information below: Concepts: organic spectroscopy, organic chemistry Problem 52 IR Spectrum (Tiquid film) t760 U 4000 3000 1200 800 2000 V (cm 1600 ) Mass Spectrum TTTTTTTTTT % of base peak No significant UV absorption above 220 mm 87 M+* = 146 (<1%) LLLLLLLLLLLL 40 80 120 160 m/e 200 240 280 13C NMR Spectrum (20.0 MHz, CDCI, solution) solvent proton decoupled www pornowww 200 160 120 80 40 0 8 (ppm) 1H NMR...
label the spectrum OTBS Meo Yome Me H NMR spectrum (CDC13, 400 MHz) 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 f1 (ppm) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -0.5 18C NMR spectrum (CDCI, 100 MHz) 210 200 190 180 170 160 150 140 130 120 110 100 fi (ppm) 90 80 70 60 50 40 30 20 10 -10
A variety of spectra for an organic compound with molecular formula C10H16O are presented below. The experimental accurate mass using (+) APCI source is 153.1280 u. The 1H, 13C, COSY, HSQC and HMBC NMR spectra are given in the following slides. Propose a structure for this unknown and answer or address the following questions or requirements: d. If there are still any questionable assignments, propose additional NMR experiments which would solve those questions and briefly explain specifically what correlations you...
A variety of spectra for an organic compound with molecular formula C10H16O are presented below. The experimental accurate mass using (+) APCI source is 153.1280 u. The 1H, 13C, COSY, HSQC and HMBC NMR spectra are given in the following slides. Propose a structure for this unknown and answer or address the following questions or requirements: a. Using the most abundant isotopes of C, H and O, what are the errors in ppm and milli-Daltons for the experimental accurate mass?...
Deduce the structure based on the information below: Concepts: organic spectroscopy, organic chemistry - Problem 53 IR Spectrum (liquid film) 4000 3000 1600 1200 . 800 2000 V (cm Mass Spectrum % of baso peak No significant UV absorption above 220 nm 115 M+ 146 40 80 200 240 120 160 m/e 280 13C NMR Spectrum (50.0 MHz, CDC, solution) solvent proton decoupled 200 160 120 80 40 0 8 (ppm) TH NMR Spectrum (200 MHZ, CDCI, solution) TMS LIIIIIIIIIIIIIIIII...
The 1H NMR spectrum has peaks (marked with "x") for a minor byproduct - what might that be? 7.4741 7.3572 7.3393 -5.4109 4.2023 4.1906 -4.1725 4.1608 -3.5350 -3.5065 -3.4775 Spectrometer: 400 MHZ Solvent: CDCI T 4.4 4.3 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 3.4 3.3 <3.2368 CDCI, x = peak from minor byproduct do 1.00-1 F-602 3.1444 Feer to 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 ppm 1.0 CHEM 08LB: 1H NMR...