Homework Answers
Product is a meta isomer as benzene gives four different signal ,it indicates presence of meta isomer.
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Fill out the tables below of the starting material and pure
product by using the given...
How would you analyze the peaks for a 1H NMR of Bromovanillyl Alcohol and an IR...
How would you analyze the peaks for a 1H NMR of
Bromovanillyl Alcohol and an IR spectra of Bromovanillyl
Alcohol?
IR Peaks
NMR Peaks
%Transmittance 3446.63 3121.86 8 3004.87 2925.69 2877.64 8 1611.72" 1588.93 1499.44 1420.46 1398.31 1371.05 05 1277.51 1200.01 1179.94 1143.10 8 1047.61 1010.21 948.66 852.87 836.91 823.94 780.44 719.71 H NMR (400 mHz, CDCls) Br 6.86 s) 92 7.09 5.90 4.60 1.64 CDCls H20 12.5 12.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5...
analyze this NMR & IR S23 CDC13 QE-300 240 UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz....
analyze this NMR & IR
S23 CDC13 QE-300 240 UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
When comparing the spectra for the starting material and the product – where do you observe...
When comparing the spectra for the starting material and
the product – where do you observe the biggest
change(s)?
2-hydroxy-3-methoxybenzoic acid HN MR (600 MHz, DMSO-do) -251DMS0-d6 -13.96 1139 ;2.38 7:21 7.20 L89- 6.85 17.36 .6.84 380 он он ܢ0-Hac 0.98- ܓ104 107z 3.00- 14.5 14.0 13.5 13.0_12.5 12.0 115 11. 010.5_10.0 9. 5 _8.0 7. 5 7 . 0 6.5 _6. 0 5 . 5 5 .0 4. 5 4 .0 _3.5 _3.0 _2.5 9.0 _8.5 f1 (ppm) 2-hydroxy-3-methoxybenzaldehyde...
When comparing the spectra for the starting material and the product – where do you observe...
When comparing the spectra for the starting material and
the product – where do you observe the biggest
change(s)?
2-hydroxy-3-methoxybenzoic acid HN MR (600 MHz, DMSO-do) -251DMS0-d6 -13.96 1139 ;2.38 7:21 7.20 L89- 6.85 17.36 .6.84 380 он он ܢ0-Hac 0.98- ܓ104 107z 3.00- 14.5 14.0 13.5 13.0_12.5 12.0 115 11. 010.5_10.0 9. 5 _8.0 7. 5 7 . 0 6.5 _6. 0 5 . 5 5 .0 4. 5 4 .0 _3.5 _3.0 _2.5 9.0 _8.5 f1 (ppm) 2-hydroxy-3-methoxybenzaldehyde...
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 NM...
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...
3. Based on the integration of the peaks, what is the relative number of protons which...
3. Based on the integration of the peaks, what is the relative
number of protons which make up each signal?
4. Identify any common splitting patterns. (ie. Isopropyl,
ethyl, etc)
UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
Analyze the peaks in this NMR spectrum of p-nitrophenol assigning the peaks, discuss multiplicity, splitting, shielding/deshielding...
Analyze the peaks in this NMR spectrum of p-nitrophenol
assigning the peaks, discuss multiplicity, splitting,
shielding/deshielding effects, and integration.
I have assigned the peaks but i am not sure if i have done it
correctly. Is there expected to a peak for the -OH? or is there not
a peak because the proton is exchangeable? is there complex or
normal splitting observed?
901 C 18 1.00 19 -429 -7.5 7030 P-nitrophenol OH H NMR, nitrophenol in CDCl un A 7...
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 NM...
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?...
7. What kind of carbons correspond to these chemical shifts? 8. Based on this analysis, the unknown might contain the f...
7. What kind of carbons correspond to these chemical
shifts?
8. Based on this analysis, the unknown might contain the
following substructure:
UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
5. Based on this analysis, the compound might be or contain the following substructure: 6. How...
5. Based on this analysis, the compound might be or contain
the following substructure:
6. How many different types of carbons appear to be present?
What are the chemical shifts for these carbons?
UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
How would you analyze the peaks for a 1H NMR of
Bromovanillyl Alcohol and an IR spectra of Bromovanillyl
Alcohol?
IR Peaks
NMR Peaks
%Transmittance 3446.63 3121.86 8 3004.87 2925.69 2877.64 8 1611.72" 1588.93 1499.44 1420.46 1398.31 1371.05 05 1277.51 1200.01 1179.94 1143.10 8 1047.61 1010.21 948.66 852.87 836.91 823.94 780.44 719.71 H NMR (400 mHz, CDCls) Br 6.86 s) 92 7.09 5.90 4.60 1.64 CDCls H20 12.5 12.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5...
analyze this NMR & IR
S23 CDC13 QE-300 240 UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
When comparing the spectra for the starting material and
the product – where do you observe the biggest
change(s)?
2-hydroxy-3-methoxybenzoic acid HN MR (600 MHz, DMSO-do) -251DMS0-d6 -13.96 1139 ;2.38 7:21 7.20 L89- 6.85 17.36 .6.84 380 он он ܢ0-Hac 0.98- ܓ104 107z 3.00- 14.5 14.0 13.5 13.0_12.5 12.0 115 11. 010.5_10.0 9. 5 _8.0 7. 5 7 . 0 6.5 _6. 0 5 . 5 5 .0 4. 5 4 .0 _3.5 _3.0 _2.5 9.0 _8.5 f1 (ppm) 2-hydroxy-3-methoxybenzaldehyde...
When comparing the spectra for the starting material and
the product – where do you observe the biggest
change(s)?
2-hydroxy-3-methoxybenzoic acid HN MR (600 MHz, DMSO-do) -251DMS0-d6 -13.96 1139 ;2.38 7:21 7.20 L89- 6.85 17.36 .6.84 380 он он ܢ0-Hac 0.98- ܓ104 107z 3.00- 14.5 14.0 13.5 13.0_12.5 12.0 115 11. 010.5_10.0 9. 5 _8.0 7. 5 7 . 0 6.5 _6. 0 5 . 5 5 .0 4. 5 4 .0 _3.5 _3.0 _2.5 9.0 _8.5 f1 (ppm) 2-hydroxy-3-methoxybenzaldehyde...
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...
3. Based on the integration of the peaks, what is the relative
number of protons which make up each signal?
4. Identify any common splitting patterns. (ie. Isopropyl,
ethyl, etc)
UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
Analyze the peaks in this NMR spectrum of p-nitrophenol
assigning the peaks, discuss multiplicity, splitting,
shielding/deshielding effects, and integration.
I have assigned the peaks but i am not sure if i have done it
correctly. Is there expected to a peak for the -OH? or is there not
a peak because the proton is exchangeable? is there complex or
normal splitting observed?
901 C 18 1.00 19 -429 -7.5 7030 P-nitrophenol OH H NMR, nitrophenol in CDCl un A 7...
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?...
7. What kind of carbons correspond to these chemical
shifts?
8. Based on this analysis, the unknown might contain the
following substructure:
UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
5. Based on this analysis, the compound might be or contain
the following substructure:
6. How many different types of carbons appear to be present?
What are the chemical shifts for these carbons?
UN (43 MIL.) 10.02s, 1H), 7.716.J-2 Hz. ) 2.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 4.0 3.5 3.0 2.5 20 15 100.5 0.0 -0.5 -1.0 -1.5 -2. 5.5 5.0 4.5 fl (ppm)
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