Problem 5: Determine the correct structure for the unknowns based on the various spectroscony data provided...
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...
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...
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...
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...
What is the structure of the unknown molecule based on 1H, 13C NMR
and IR
NMR-115 (700MHz) MW: 152.15 Analysis: C, 63.15; H, 5.30; o, 31.55 galdenadte 70 60 ppm 80 160 150 140 130 120 110 100 9 190 180
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
Help!!!
3. (34 points total) Below are EI-MS and IR data for an unknown compound: 134 100 106 51 5 Mt 31 39 91 118 150 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 a 3 points) Draw the structure that best fits the data in the box provided.
Directly compare your own GCMS data to the three different
stock GCMS data sets.
CIGC Yukki 7 10000 3.488 Spoctrum 102030405060为80 90 100 110 120 10 140 150 160 170 180 190 Spectrum Peak Repet TIC Area Ast 28a86 100 4.118 Page 1 of 3 10 20 30 40 60 Prak Repon TIC Are Anat 2 4117 Page 2 of 3 TIC 1.00 min Spectnan 0 10 20 0 70300 10 120 140 150 160 170 10 190 Spectrum 0...
the compound. Trspectaldaa toanswer the following questions and deduce the structure of compound has molecular formula C1zH sCIO. 6H CDCI 2H 2H 2H 2H 1H TMS Expansion of peak near 128.5 ppm 2 peaks CDCI, TMS 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 100 a. (3 pts.) What is the DoU? b. (4 pts.) The mass spectrum shows a signal for M . at m/z : 210 (100%)...
Write down problem number.
Provide formula, HDI value, and a complete, chemically correct
structure for each problem.
Assign signals in the 1H and 13C spectra to specific atoms,
identify structural units and/or functional groups.
Example:
Problem # 3
Formula: C8H8O2
HDI: 5
1H NMR: p-substituted Ar at 7.27-7.97 ppm, benzylic CH3 group at
2.42 ppm, COOH proton at 12.9 ppm
13C NMR: carbonyl C at 167.8 ppm (ester or acid), benzylic CH3
at 21.40 ppm, 4 remaining signals are Ar...