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mass spec- fragmentation
show the different fragmentations of n butylbenzene and what
peaks are involve
n-Butylbenzene...
(c). Cyclic alcohols may undergo fragmentation by at least three different pathways. Based on the following...
(c). Cyclic alcohols may undergo fragmentation by at least three different pathways. Based on the following mass spectrum, show THREE (3) fragmentation pathways for cyclohexanol. 57 100 80- OH M.W. = 100 60- 82 Relative Abundance 40- 20 lilia M (100) 99 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 B5 90 95 100 m/ (10 marks)
Mass Spec Molecular Weight: Important Fragments; what are they and what do they mean? (base peak...
Mass Spec
Molecular Weight:
Important Fragments; what are they and what do they mean? (base
peak structure, is there a halogen, is there a benzene ring, is
there an odd number of nitrogens, other important fragments that
tell something about the structure)
positive EI Mass Spectrum 73 100 90 80 Mass of molecularion is 104 what has been lost to see 89? 70 80 50- 40- 89 30- 20 72 10- w 113 14 10 20 30 40 50 80...
please help explain the gc fragmentation for this? 132.0 3500 104.0 3000 MW-140.16 2500 2000 1500...
please help explain the gc fragmentation for this?
132.0 3500 104.0 3000 MW-140.16 2500 2000 1500 78.0 1000 51.0 500 63.0 83.8 88.9 n/z--> 40 45 50 55 60 70 80 85 90 95 100 105 110 115 120 130 135 140 125 75 65
Deduce the ester compound structure with M/Z=136 on this mass spectrum; significant peaks at 51, 77,...
Deduce the ester compound structure with M/Z=136 on this mass
spectrum; significant peaks at 51, 77, 105, 136.
Relative Abundance M(136) 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 mz
Mass Spectroscopy: Predict the m/z peaks and fragmentation group of the following: 1.1,-Methyl-2,4-dinitro-benzene 2. 3-nitro-benzaldehyde 3. Acetophenone...
Mass Spectroscopy: Predict the m/z peaks and fragmentation group
of the following:
1.1,-Methyl-2,4-dinitro-benzene
2. 3-nitro-benzaldehyde
3. Acetophenone and Pyridine
4. 2-methyl-benzophenone and 4-methyl-benzophenone
Thanks
„NO2 NO2 Common Name: IUPAC Name: CAS No.: Zoom Out MS Solvent: BP: MP: 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 wali 0.20 0.101 L. 0.00 0 25 50 75 100 125 150 175 200 OK SAVE O2N. I Common Name: IUPAC Name: CAS No.: Zoom Out MS Solvent: BP: MP: 1.00 0.90 0.80 0.70 0.60...
Unknown Number: Molecular Formula: Index of Hydrogen Deficiency: Structure: Mass Spec Molecular Weight: Important Fragments; what...
Unknown Number:
Molecular Formula:
Index of Hydrogen Deficiency:
Structure:
Mass Spec
Molecular Weight:
Important Fragments; what are they and what do they mean? (base
peak structure, is there a halogen, is there a benzene ring, is
there an odd number of nitrogens, other important fragments that
tell something about the structure)
IR
Is there an OH? Wavenumber?
Is there a carbonyl group? If so what type (acid. ester, amide,
aldehyde, ketone etc.)? Wave number?
Other important peaks (terminal alkyne, cyano...
Instructions: Write the structure of each molecular formula using the IR and Mass Spec spectra. Important...
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...
DESCRIBE PEAKS OF EACH NMR (Carbon 13 and PROTON 1H) and mass spec on the one page NMR Unknown_18 200 180 160 140 120...
DESCRIBE PEAKS OF EACH NMR (Carbon 13 and PROTON 1H) and mass
spec on the one page
NMR Unknown_18 200 180 160 140 120 80 60 40 20 0 100 pom - 2 2 4 3 11 10 9 8 7 6 4 3 2 1 0 5 ppm - Relative Intensity 25 50 75 100 125 150 m/z
Determine the structure of Compound 2 using the Mass Spec, IR, C NMR, H NMR, and...
Determine the structure of Compound 2 using the Mass Spec, IR, C
NMR, H NMR, and Dept Experiments.
Splitting patterns are as follows from left to right: triplet, 5
peaks (unsure of name), septet (7), 4 peaks (unsure of name),
doublet
Compound 2 Mass Spec MT:M/2 = 164 Relative Intensity 25 50 75 125 150 100 m/z IR LO0 D 4000 3000 2000 1500 1000 500 HAVENUMBERI-i H NMR: ditto as compound 1 6 2 2 4 1 2 PPM...
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...
(c). Cyclic alcohols may undergo fragmentation by at least three different pathways. Based on the following mass spectrum, show THREE (3) fragmentation pathways for cyclohexanol. 57 100 80- OH M.W. = 100 60- 82 Relative Abundance 40- 20 lilia M (100) 99 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 B5 90 95 100 m/ (10 marks)
Mass Spec
Molecular Weight:
Important Fragments; what are they and what do they mean? (base
peak structure, is there a halogen, is there a benzene ring, is
there an odd number of nitrogens, other important fragments that
tell something about the structure)
positive EI Mass Spectrum 73 100 90 80 Mass of molecularion is 104 what has been lost to see 89? 70 80 50- 40- 89 30- 20 72 10- w 113 14 10 20 30 40 50 80...
please help explain the gc fragmentation for this?
132.0 3500 104.0 3000 MW-140.16 2500 2000 1500 78.0 1000 51.0 500 63.0 83.8 88.9 n/z--> 40 45 50 55 60 70 80 85 90 95 100 105 110 115 120 130 135 140 125 75 65
Deduce the ester compound structure with M/Z=136 on this mass
spectrum; significant peaks at 51, 77, 105, 136.
Relative Abundance M(136) 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 mz
Mass Spectroscopy: Predict the m/z peaks and fragmentation group
of the following:
1.1,-Methyl-2,4-dinitro-benzene
2. 3-nitro-benzaldehyde
3. Acetophenone and Pyridine
4. 2-methyl-benzophenone and 4-methyl-benzophenone
Thanks
„NO2 NO2 Common Name: IUPAC Name: CAS No.: Zoom Out MS Solvent: BP: MP: 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 wali 0.20 0.101 L. 0.00 0 25 50 75 100 125 150 175 200 OK SAVE O2N. I Common Name: IUPAC Name: CAS No.: Zoom Out MS Solvent: BP: MP: 1.00 0.90 0.80 0.70 0.60...
Unknown Number:
Molecular Formula:
Index of Hydrogen Deficiency:
Structure:
Mass Spec
Molecular Weight:
Important Fragments; what are they and what do they mean? (base
peak structure, is there a halogen, is there a benzene ring, is
there an odd number of nitrogens, other important fragments that
tell something about the structure)
IR
Is there an OH? Wavenumber?
Is there a carbonyl group? If so what type (acid. ester, amide,
aldehyde, ketone etc.)? Wave number?
Other important peaks (terminal alkyne, cyano...
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...
DESCRIBE PEAKS OF EACH NMR (Carbon 13 and PROTON 1H) and mass
spec on the one page
NMR Unknown_18 200 180 160 140 120 80 60 40 20 0 100 pom - 2 2 4 3 11 10 9 8 7 6 4 3 2 1 0 5 ppm - Relative Intensity 25 50 75 100 125 150 m/z
Determine the structure of Compound 2 using the Mass Spec, IR, C
NMR, H NMR, and Dept Experiments.
Splitting patterns are as follows from left to right: triplet, 5
peaks (unsure of name), septet (7), 4 peaks (unsure of name),
doublet
Compound 2 Mass Spec MT:M/2 = 164 Relative Intensity 25 50 75 125 150 100 m/z IR LO0 D 4000 3000 2000 1500 1000 500 HAVENUMBERI-i H NMR: ditto as compound 1 6 2 2 4 1 2 PPM...
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...
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