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Question 1: Predict a reasonable molecular formula for the following mass spectra (12 pts) (1 bonus...
Instructions: Write the structure of each molecular formula using the IR and Mass Spec spectra. Important that you justify with at least two arguments in each spectrum for which you present that structure. CH 3500 3000 1500 1000 2500 2000 Wavenumber(cm-1) 20 30 40 50 60 70 80 90 100 110 120 CHBr 100 Transmittance 3500 3000 2500 2000 Wavenumber(cm-1) 1500 1000 119 135 100 110 120 130 140 150 160 170 180 190 10 20 30 40 50 60...
Identify which of these four mass spectra indicate the presence of sulfur, chlorine, bromine, iodine, or nitrogen. Suggest a molecular formula for each. 100 abundance 8 $ 38 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 mily abundance 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 z 8 8 8 abundance $ 8 LL 10 20 30 40 50 60 70 80 90 100 110...
Identify which of these four mass spectra indicate the
presence of sulfur, chlorine, bromine, iondine, nitrogen. suggest a
molecular formula for each.
2otten breaks sh ass spec er be mass PROBLEM 12-7 Identify which of these four mass spectra indicate the presence of sulfur, chlorine bromine, iodine, or nitrogen. Suggest a molecular formula for each. AA gIve the lonica 100 77 80 156 158 (a) 60 40 20 Fragn 10 20 30 40 50 60 70 80 100 110 120...
Use the spectra below to determine the molecular formula and
chemical structure of the unknown compound.
MASS 142 % of Base Peak 1147 40 50 70 80 5 100 % Transmittance Jari- 3000 1000 4000 'H NMR 300 MERE 2000 Wavenumber (cm) 3.0 25 20 15 Ppm 4.0 3.5 C/DEPT NMR 75.5 MHz ppm 60 50 40 80 70 90 100 110 120 170 160 150 140 130 ppm 4.5 4.0 3.5 3.0 2.5 2.0 1.5 ppm COSY 300 MHz...
The mass spectrum of 3-bromopropanoic acid is shown below. Four peaks are labeled with A, B, C, and D. Select the label for the base peak(s). 45 55 18 26 on 10 20 30 40 50 60 70 80 90 100 MIZ 110 120 130 140 150 160 170 The mass spectrum of 3-bromopropanoic acid is shown below. Four peaks are labeled with A, B, C, and D. Select the label for the M peak(s) (unfragmented parent). 135 27 45...
8. (10 points) The following spectra correspond to compounds AE listed below con pound to its corresponding spestre Label very simal on the spectrum (as Co . ctc.). Spectrum CDCI, 190 160 170 160 150 140 130 120 110 100 80 80 Spectrum 2 70 80 50 40 30 20 10 O le CDCI, 190 180 170 180 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 O de CDCI, 190 180 170 180...
2. Answer the following questions for an unknown with molecular formula C HBrO2 given the spectral data below: (a) Calculate the molecular weight and the exact mass of the compound. (b) Deduce the structure. Relative Abundance percent) (166) Om 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 triplets
determine
the neutral organic compound from the following spectra
M+ 151 Mass Spectrum - Neutral Solid Unknown 140 150 160 100 110 120 130 70 80 90 40 50 60 20 30
Interpret the 1H NMR and 13C NMR spectra data provided as
evidence of the structure of styrene.
Styrene H-NMR Styrene C-NMR We were unable to transcribe this imageStyrene in CDC13 VI 135 130 125 120 ppm 200 190 180 170 160 50 140 130 120 110 100 90 80 70 60 50 4030 20 10 ppm
Styrene H-NMR Styrene C-NMR
Styrene in CDC13 VI 135 130 125 120 ppm 200 190 180 170 160 50 140 130 120 110 100...
What is the molecular structure?
2
4 CHAPTER 8 ASSIGNED PROBLEMS Problem 8.43A MASS I 20 sen par 43 100 131 85 109 95 1827 ? 185 50 200 50 100 150 200 m/z IR 100 90 E 70 4000 3000 2000 1000 Wavenumber (cm-1) 'H NMR 600 MHz 1260 1240 Hz 780 760 740 Hz 4.5 4.0 3.5 3.0 2.5 2.0 1.5 Ppm 1C/DEPT NMR 150.9 MHz 170 160 150 140 130 120 110 100 90 80 70 60...