Homework Answers
Based on retention time, GCMS instrument predict the mass spectra of the expected compounds.
The given spectra for the product of oxidation of t-butylcyclohaxanol....the product will be t-butylcyclohaxanone with mass = 154 g/mol.
GCMS spectra for this showing retention time = 3.5 second and mass peaks at 154, 98, 57...
So now let us match this with stock spectrum
Spectra at page 1
Showed retention time = 4.1 second
and mass peaks at 154, 98, 57....
Spectra at page 2
Peak 1 showed retention time = 3.8 second
Mass peaks at 138, 123, 81, 57....
Peak 2 showed retention time 4.1 second
Mass peaks at 154, 98, 57....
Spectra at page 3
Peak 1 showed retention time 3.6 second
Mass peaks at 123, 90, 81, 57....
Peak 2 showed retention time 3.8 seconds
Mass peaks at 138, 123, 81,57....
Peak 3 showed retention time 4.1 seconds
Mass peaks at 154, 98, 57...
After comparison, we can observe that peak 1 of spectra on page 2 and peak 1 and 2 of spectra on page 3 has a close retention time, but not showing the mass peaks corresponding to our spectra (compound)...
Peak 1 of spectra on page 1, peak 2 of spectra on page 2 and peak 3 of spectra on page 3 having retention time 4.1 second...but showing mass peaks corresponding to our spectra....so we can conclude either that spectra on page 1 having pure t-butylcyclohaxanone, spectra on page 2 and page 3 having mixture containing t-butylcyclohaxanone or calibration is required in the instrument on which our spectra is recorded (as we got retention time 3.5 second while standard is 4.1 second).
Thank You
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Directly compare your own GCMS data to the three different
stock GCMS data sets.
CIGC Yukki...
8. (10 points) The following spectra correspond to compounds AE listed below con pound to its...
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...
Baeyer Villiger Can someone explain the GCMS of this sample? This was the procedure: A solution...
Baeyer Villiger
Can someone explain the GCMS of this sample?
This was the procedure:
A solution of acetophenone, 20 mmoles, and
metha-chloroperbenzoic acid (mCPBA)
36mmoles, are stirred in 50mL of distilled water at 80°C for 4 h
and monitored by
TLC (eluent: ethyl acetate). The reaction mixture is cooled to
room temperature and
extracted with dichloromethane (3x30mL). The combined organic
layers are
washed with saturated NaHCO3, and NaCl brine solution. The
solution is then dried
with MgSO4 and the solvent...
Suggest a composition for the halogen compound whose mass spectrum is shown below and assign the labeled peaks. 127 100 173 160 158 162 25 48 TITTHTT 160 170 91 208 79 35 160 173 30 40 50 60 70 80 90...
Suggest a composition for the halogen compound whose mass
spectrum is shown below and assign the labeled peaks.
127 100 173 160 158 162 25 48 TITTHTT 160 170 91 208 79 35 160 173 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 m/z
127 100 173 160 158 162 25 48 TITTHTT 160 170 91 208 79 35 160 173 30 40 50 60 70 80 90 100...
GCMS Data: Briefly discuss how the GC-MS supports the identity of the product. In your discussion...
GCMS Data: Briefly discuss how the GC-MS supports the identity of the product. In your discussion of the GC-MS data, include: a) the molecular ion M* and its corresponding m/z value from the spectrum; b) the base peak (i.e. the peak with highest abundance) and its corresponding m/z. Explain how the GC-MS data allow you to tell whether the reaction was successful or not. In your discussion, include things such as (but not limited to): presence of any major impurities,...
The mass spectrum of 3-bromopropanoic acid is shown below. Four peaks are labeled with A, B,...
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...
Need help analyzing this CNMR Spectrum ppm 190 191.024 180 170 . 160 . - 154.638...
Need help analyzing this CNMR Spectrum ppm 190 191.024 180 170 . 160 . - 154.638 150 149.787 140 150 130.303 127.005 120 110 110.536 109.106 . 100 0 80 -77.477 -77.160 -76.842 70 60 -56.331 S 56.162 50 40 30 Solvent: CDCI: 20 10 ó
label the spectrum OTBS Meo Yome Me H NMR spectrum (CDC13, 400 MHz) 8.5 8.0 7.5...
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
eBook Video Consider the following data for two variables, z and y. i 135 110 130 145 175 160 120 i 145 100 120 120 130 130 110 a. Consider the four scatter diagrams below. 1. 120 100 80 ...
eBook Video Consider the following data for two variables, z and y. i 135 110 130 145 175 160 120 i 145 100 120 120 130 130 110 a. Consider the four scatter diagrams below. 1. 120 100 80 " " 60 40 20 110-120 130 149-150 160 170 2. 120 100 80 60 40 20 110-120-130 140 150 160 170 3. 120 100 80 60 40 20 110一一120一一130 -149 130-100-170 120 100 80 60 40 20 130-140-150一一160一一1zo___ 110 120...
Provide th structure that best matches each spectra below Prollem 57 Compound D, C,H.O. 90 100...
Provide th structure that best matches each spectra
below
Prollem 57 Compound D, C,H.O. 90 100 10 180 150 40 130 120 110 100 9 0 T0 60 50 40 30 20 Problem 5.7 Compoand E, C.H,Be 190 180 170 160 150 O 130 120 110 100 0 80 0 60 s0
Interpret the 1H NMR and 13C NMR spectra data provided as evidence of the structure of styrene.
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...
Baeyer Villiger
Can someone explain the GCMS of this sample?
This was the procedure:
A solution of acetophenone, 20 mmoles, and
metha-chloroperbenzoic acid (mCPBA)
36mmoles, are stirred in 50mL of distilled water at 80°C for 4 h
and monitored by
TLC (eluent: ethyl acetate). The reaction mixture is cooled to
room temperature and
extracted with dichloromethane (3x30mL). The combined organic
layers are
washed with saturated NaHCO3, and NaCl brine solution. The
solution is then dried
with MgSO4 and the solvent...
Suggest a composition for the halogen compound whose mass
spectrum is shown below and assign the labeled peaks.
127 100 173 160 158 162 25 48 TITTHTT 160 170 91 208 79 35 160 173 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 m/z
127 100 173 160 158 162 25 48 TITTHTT 160 170 91 208 79 35 160 173 30 40 50 60 70 80 90 100...
GCMS Data: Briefly discuss how the GC-MS supports the identity of the product. In your discussion of the GC-MS data, include: a) the molecular ion M* and its corresponding m/z value from the spectrum; b) the base peak (i.e. the peak with highest abundance) and its corresponding m/z. Explain how the GC-MS data allow you to tell whether the reaction was successful or not. In your discussion, include things such as (but not limited to): presence of any major impurities,...
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...
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
eBook Video Consider the following data for two variables, z and y. i 135 110 130 145 175 160 120 i 145 100 120 120 130 130 110 a. Consider the four scatter diagrams below. 1. 120 100 80 " " 60 40 20 110-120 130 149-150 160 170 2. 120 100 80 60 40 20 110-120-130 140 150 160 170 3. 120 100 80 60 40 20 110一一120一一130 -149 130-100-170 120 100 80 60 40 20 130-140-150一一160一一1zo___ 110 120...
Provide th structure that best matches each spectra
below
Prollem 57 Compound D, C,H.O. 90 100 10 180 150 40 130 120 110 100 9 0 T0 60 50 40 30 20 Problem 5.7 Compoand E, C.H,Be 190 180 170 160 150 O 130 120 110 100 0 80 0 60 s0
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...
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