Homework Answers
IR analysis
the band at around 3025 cm-1 is due to aromatic CH stretching
the 2850 - 2975 cm-1 is due to aliphatic CH stretching
the band at 1500 cm-1 is due to aromatic C=C stretching
Mass analysis
the molecular ion peak at 200 and M+2 at 202 in equal intensity show the presence of bromine atom
1H NMR analysis
the doublet of a doublet at around 7.5 and 6.5 ppm is due to aromatic proton having a para substituent
the quartet at 4 ppm is due to methylene proton attached to an oxygen
the triplet at around 1.5 ppm is due to methyl proton attached to the methylene group
13C NMR analysis
the four peak between 110 - 160 ppm is due to aromatic carbons
the peak at 60 ppm is due to methylene carbon attached to an oxygen
the peak at around 15 ppm is due to methyl carbon
based on the above analysis the structure of the compound is
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1) Which compound gives the following...
1) Which compound gives the following spectra? For the 'H-NMR assign all signals. Interpret base peak and mole pea...
1) Which compound gives the following spectra? For the 'H-NMR assign all signals. Interpret base peak and mole peak in the mass spectrum if a mole peak exists. Assign at least two "C signals. How does the IR spectrum support your findings? (12 pts.) 100- Relative Intensity 0- 20 40 60 80 100 140 160 180 200 220 120 m/ 200 180 160 140 120 100 80 60 40 20 0 ppm t6H 9,4H 11H d, 2 H 9 8...
please help... ignore the written work 1) Which compound gives the following spectra? For the 'H-NMR...
please help... ignore the written work
1) Which compound gives the following spectra? For the 'H-NMR assign all signals. Interpret mol peak and base peak in the mass spectrum if a mole peak exists. Assign at least two "c signals. How does the IR spectrum support your findings? (12 pts.) s, 4 H s, 3 H t, 3 H q, 2h s, 1 H 2 1 6 5 4 7 8 11 10 ppm esce 100- 80 40 20 150...
Which compound gives the following spectra? For the 1H-NMR assign all signals. interpret mol peak and...
Which compound gives the following spectra?
For the 1H-NMR assign all signals. interpret mol peak and base peak
in the mass spectrum if a mole peak exists. Assign at least two 13C
signals. How does the IR spectrum support your finding?
Check 200 180 160 120 80 60 40 20 0 140 a 100 ppm s, 3H t, 3 H d. 2 a. 2 H d. 2H s, 1 H 1 10 9 8 7 6 4 3 2 1...
Check 200 180 160 120 80 60 40 20 0 140 a 100 ppm s, 3H t, 3 H d. 2 a. 2 H d. 2H s, 1 H 1 10 9 8 7 6 4 3 2 1 5 ppm 1) W...
Check 200 180 160 120 80 60 40 20 0 140 a 100 ppm s, 3H t, 3 H d. 2 a. 2 H d. 2H s, 1 H 1 10 9 8 7 6 4 3 2 1 5 ppm 1) Which compound gives the following spectra? For the 'H-NMR assign all signals. Interpret mol peak and base peak in the mass spectrum if a mole peak exists. Assign at least two 13C signals, How does the IR spectrum...
Answer the following questions about the provided spectra: The Molecular Weight of the compound is 88...
Answer the following questions about the provided spectra: The Molecular Weight of the compound is 88 g/mol. A) (1 point) The broad peak at -3100 cm and the strong peak at 1700 cm' combined indicate the presence of what functional group? B) (1 point) How many hydrogen neighbors does the septet at 2.6 ppm in the 'H NMR spectrum have? C) (1 point) What functional group is indicated by the peak at 184 ppm in the C spectrum? D) (1...
problem 4.05 please 1-3. There are two sets of spectra attached. For each provide a structure...
problem 4.05 please
1-3. There are two sets of spectra attached. For each provide a structure and assign the peaks by labeling the structures and listing the peaks in the tables provided. 208 Label H NMR 6 Label C NMR 6 4.05 Label H NMR 8 Label C NMR 8 Problem 4.05 Given the spectroscopic data below (Proton, Carbon, gHSQC, gCOSY, and gHMBC), provide the structure of the molecule. (HR-MS: 238.1358 amu), {'H, 'H) Nuclear Overhauser effect correlation was observed...
Please help with identifying this compound? Need to draw the structure 14.01 Mass Spectrum 13C-NMR Spectrum...
Please help with identifying this compound? Need to draw the
structure
14.01 Mass Spectrum 13C-NMR Spectrum CHO M**= 60 Relative Intensity 10 15 20 25 30 40 45 50 35 m/z 55 60 200 180 160 140 120 80 60 40 20 100 ppm IR Spectrum 1H-NMR Spectrum o Chem. shift Ret area Porto age are 3.5822.00 226 157 094 Singlet (hare some into the rest 1.00 2.00 3.00 1466 3333 2963 11 10 Ppm
16. Propose a structure for a molecule of formula CaHsCl which gave the following 1H NMR spectrum. PPM 17. Propose a st...
16. Propose a structure for a molecule of formula CaHsCl which gave the following 1H NMR spectrum. PPM 17. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 148, an IR peak at 1680 cm'and gives the following H and 13C NMR spectra 3H зн 2H 2H 2H 3 5 2 7 6 4 PPM 160 140 180 60 220 200 20 0 120 100 80 40 PPM -
Compound 2: Use the information provided below and the IR and NMR spectra on the next...
Compound 2: Use the information provided below and the IR and NMR spectra on the next page to answer the following questions. a) An MS was taken of compound 2 and the table is given below. Determine the molecular formula of 2 from the MS given below relative abundance m/z 132 100 133 9.8 b) Calculate the Index of Hydrogen Deficiency/Degree of Unsaturation for the molecule. c) Using the IR spectrum and the 1H- and 13C-NMR spectra given below, determine...
Molecule C: Molecule D: Can someone PLEASE EXPLAIN the answers?????? 2. Below are the 'H and...
Molecule C:
Molecule D:
Can someone PLEASE EXPLAIN the answers??????
2. Below are the 'H and 13C NMR spectra for four isomers of C&H:02. Provide the structure that produced each set of spectra. Molecule A: 'H NMR 3H 3H no coupling, so no adjacent carbons with hydrogen atoms 2H 5 3 2 0 PPM 13C NMR aldehyde or ketone no aldehyde in 1H NMR, SO ketone 220 200 180 160 140 120 100 PPM 80 60 40 20 0 Molecule...
1) Which compound gives the following spectra? For the 'H-NMR assign all signals. Interpret base peak and mole peak in the mass spectrum if a mole peak exists. Assign at least two "C signals. How does the IR spectrum support your findings? (12 pts.) 100- Relative Intensity 0- 20 40 60 80 100 140 160 180 200 220 120 m/ 200 180 160 140 120 100 80 60 40 20 0 ppm t6H 9,4H 11H d, 2 H 9 8...
please help... ignore the written work
1) Which compound gives the following spectra? For the 'H-NMR assign all signals. Interpret mol peak and base peak in the mass spectrum if a mole peak exists. Assign at least two "c signals. How does the IR spectrum support your findings? (12 pts.) s, 4 H s, 3 H t, 3 H q, 2h s, 1 H 2 1 6 5 4 7 8 11 10 ppm esce 100- 80 40 20 150...
Which compound gives the following spectra?
For the 1H-NMR assign all signals. interpret mol peak and base peak
in the mass spectrum if a mole peak exists. Assign at least two 13C
signals. How does the IR spectrum support your finding?
Check 200 180 160 120 80 60 40 20 0 140 a 100 ppm s, 3H t, 3 H d. 2 a. 2 H d. 2H s, 1 H 1 10 9 8 7 6 4 3 2 1...
Check 200 180 160 120 80 60 40 20 0 140 a 100 ppm s, 3H t, 3 H d. 2 a. 2 H d. 2H s, 1 H 1 10 9 8 7 6 4 3 2 1 5 ppm 1) Which compound gives the following spectra? For the 'H-NMR assign all signals. Interpret mol peak and base peak in the mass spectrum if a mole peak exists. Assign at least two 13C signals, How does the IR spectrum...
Answer the following questions about the provided spectra: The Molecular Weight of the compound is 88 g/mol. A) (1 point) The broad peak at -3100 cm and the strong peak at 1700 cm' combined indicate the presence of what functional group? B) (1 point) How many hydrogen neighbors does the septet at 2.6 ppm in the 'H NMR spectrum have? C) (1 point) What functional group is indicated by the peak at 184 ppm in the C spectrum? D) (1...
problem 4.05 please
1-3. There are two sets of spectra attached. For each provide a structure and assign the peaks by labeling the structures and listing the peaks in the tables provided. 208 Label H NMR 6 Label C NMR 6 4.05 Label H NMR 8 Label C NMR 8 Problem 4.05 Given the spectroscopic data below (Proton, Carbon, gHSQC, gCOSY, and gHMBC), provide the structure of the molecule. (HR-MS: 238.1358 amu), {'H, 'H) Nuclear Overhauser effect correlation was observed...
Please help with identifying this compound? Need to draw the
structure
14.01 Mass Spectrum 13C-NMR Spectrum CHO M**= 60 Relative Intensity 10 15 20 25 30 40 45 50 35 m/z 55 60 200 180 160 140 120 80 60 40 20 100 ppm IR Spectrum 1H-NMR Spectrum o Chem. shift Ret area Porto age are 3.5822.00 226 157 094 Singlet (hare some into the rest 1.00 2.00 3.00 1466 3333 2963 11 10 Ppm
16. Propose a structure for a molecule of formula CaHsCl which gave the following 1H NMR spectrum. PPM 17. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 148, an IR peak at 1680 cm'and gives the following H and 13C NMR spectra 3H зн 2H 2H 2H 3 5 2 7 6 4 PPM 160 140 180 60 220 200 20 0 120 100 80 40 PPM -
Compound 2: Use the information provided below and the IR and NMR spectra on the next page to answer the following questions. a) An MS was taken of compound 2 and the table is given below. Determine the molecular formula of 2 from the MS given below relative abundance m/z 132 100 133 9.8 b) Calculate the Index of Hydrogen Deficiency/Degree of Unsaturation for the molecule. c) Using the IR spectrum and the 1H- and 13C-NMR spectra given below, determine...
Molecule C:
Molecule D:
Can someone PLEASE EXPLAIN the answers??????
2. Below are the 'H and 13C NMR spectra for four isomers of C&H:02. Provide the structure that produced each set of spectra. Molecule A: 'H NMR 3H 3H no coupling, so no adjacent carbons with hydrogen atoms 2H 5 3 2 0 PPM 13C NMR aldehyde or ketone no aldehyde in 1H NMR, SO ketone 220 200 180 160 140 120 100 PPM 80 60 40 20 0 Molecule...
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