Homework Answers
Ans: M+=140 and M+2= 142 which states that the compound has Chlorine into it. (Mass spectrum can give confirmation).
1. IR at 3010-3030 indicates presence of -CH2=CH2 meaning sp2 hybridized C atom
2. 2940 indicates -CH2 stretching frequency
3. 1620 and 1500 stands for the ring breathing frequencies.
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Fill in the % T data for each major IR peak, and assign the corresponding bond...
Match each of the compound with the appropriate IR spectrum. Assign the important peaks on the spectrum with corr...
Match each of the compound with the appropriate IR spectrum. Assign the important peaks on the spectrum with corresponding group in the compound 6. OH HO Wavenumber Wavenumber iom Wavenumber inm (d) Wavenumber (om (c Wavenumber o Wavenumber (om) (e) aaumpats aouuus % OUR 7. MATCH a structure from the list below to the following IR spectra. Place the structure in the appropriate spectra and label the main peaks that justifies your assignments HO OH E 8. Rank the following...
assign the major absorptions in the IR spectra, assign chemical shifts in both NMR, designate the...
assign the major absorptions in the IR spectra, assign chemical
shifts in both NMR, designate the parent peak in the mass spectra
data and assign the major fragments to their corresponding peaks,
and finally provide the structure for the formula.
MF CHE MW 68 %C88.2 *H 11.8 Mass Spec. Data relative m/ abund. 21 3H .. Copyright © 1994 Note 'long-range' coupling. T TTTTTTTTTTTTTTTTT 2.4 2.2 2.0 Proton NMR 1.8 1.6 1.4 1.0 0.8 PPM Carbon 13 NMR
assign the major absorptions in the IR spectra, assign chemical shifts in both NMR, designate the...
assign the major absorptions in the IR spectra, assign chemical
shifts in both NMR, designate the parent peak in the mass spectra
data and assign the major fragments to their corresponding peaks,
and finally provide the structure for the formula.
MF C9H100 MW 134 SC 10.6 SH 7.5 Mass Spec. Data relative mit abund 5123 77 27 91 100 12 103 105 134 1357 Copyright © 1994 2H2H 2.8 2.PPK Proton NMR 215010 205 206 195 196 PPM Carbon 13...
IR Worksheet 1. For each spectrum below: 1) Label the major peaks with their approximate frequency....
IR Worksheet 1. For each spectrum below: 1) Label the major peaks with their approximate frequency. 2) Identify the bond vibration and possible functional group associated with each peak. 3) Match the spectra to one of these possible compounds: NH2 TRANSMITTANCE[%] pobo edo "2060 bo zdoo 160 Tobo 560 WAVENUMBER [cm-1] oot 08 TRANSMITTANCE [%] 09 01 02 4000 3500 3000 2500 2000 WAVENUMBER (cm-1] 1500 1000 500 οοο TRANSMITTANCE (6) οο οο οε 4000 3500 3000 1500 1000 2500...
PLEASE CLEARLY LABEL EACH PEAK ON THE COMPOUND STRUCTURE AND CORRESPONDING PEAK AS A), B), C).......
PLEASE CLEARLY
LABEL EACH PEAK ON THE COMPOUND STRUCTURE AND CORRESPONDING PEAK AS
A), B), C).... ON EACH GRAPH
- Write the Structural formula above both the H-NMR and C-NMR
spectra
- Assign each NMR peak as a), b), c), ... on both your
structural formula and corresponding peaks
- Assign the H-NMR splitting pattern multiplicity for each set
of peaks
BU T LER IO CCHIO baya I C-13 NMA TTTTTTTTTTTTTTTTTT 20 10 PPM
assign absorptions, chemical shifts, designate the parent peak in the mass spectra data and assign major...
assign absorptions, chemical shifts, designate the parent peak in
the mass spectra data and assign major fragments to their
corresponding peaks, and finally provide the structore for the
formula.
MF C1014 MW 134 SC 19.5 SH 10.5 Man Spee. Data relative me abund 27 65 91 100 92 105 134 8 20 Copyright © 1994 래래 7.1 7.2 7.0 6.7 5.6 6.5.2 FM Proton MA 2016 PINO Carbon 13 NMA
Assign functional groups/vibrations (bending, stretching) to each peak for the computational IR spectrum for carbon dioxide...
Assign functional groups/vibrations (bending, stretching) to
each peak for the computational IR spectrum for carbon dioxide
shown below. From left to right the peak numbers are 1485 cm^-1,
864.5 cm^-1, and 644 cm^-1.
.
40 Transmittar 3000 1000 2000 Wavenumber (cm-1)
3. (3 pts.) Shown below is the IR spectrum 2-acetylcyclohexanone (the structure is provided in the...
3. (3 pts.) Shown below is the IR spectrum 2-acetylcyclohexanone (the structure is provided in the spectrum). 2- acetylcyclohexanone exists as an equilibrium mixture of diketone and two enol forms. Both the diketone and enol forms can be seen in the provide IR spectrum, although the 2 different enols cannot be distinguished. The IR spectra of both enols is essentially identical and so do not be concerned with distinguishing the enols, just assign peaks to a “generic" enol. On the...
2. The following IR spectra each include the structure of the corresponding compound directly on the...
2. The following IR spectra each include the structure of the corresponding compound directly on the spectrum (continued on following pages). • Based on the given structures and the information provided in Tables 8.1 and 8.2, assign as many of the major absorptions as possible directly on the spectra o indicating what type of bond O and whether it corresponds to bending or a stretching vibration. Transmittance (%) 0 + 4000 3600 3200 2000 2400 1400 1200 1000 800 600...
Assign each of the following statements with the corresponding type(s) of spectroscopy. Note that some statements...
Assign each of the following statements with the corresponding type(s) of spectroscopy. Note that some statements may apply for more than one type. Raman Spectroscopy IR Spectroscopy IR Spectroscopy Raman Spectroscopy The excitation source includes a range of wavelengths. A change in vibrational states is brought about by excitation. IR Spectroscopy IR Spectroscopy Raman Spectroscopy The sample absorbs electromagnetic radiation. IR Spectroscopy Spectral peaks are reported in wavenumbers (cm") IR Spectroscopy Raman Spectroscopy The excitation source includes one wavelength. Electronic...
Match each of the compound with the appropriate IR spectrum. Assign the important peaks on the spectrum with corresponding group in the compound 6. OH HO Wavenumber Wavenumber iom Wavenumber inm (d) Wavenumber (om (c Wavenumber o Wavenumber (om) (e) aaumpats aouuus % OUR 7. MATCH a structure from the list below to the following IR spectra. Place the structure in the appropriate spectra and label the main peaks that justifies your assignments HO OH E 8. Rank the following...
assign the major absorptions in the IR spectra, assign chemical
shifts in both NMR, designate the parent peak in the mass spectra
data and assign the major fragments to their corresponding peaks,
and finally provide the structure for the formula.
MF CHE MW 68 %C88.2 *H 11.8 Mass Spec. Data relative m/ abund. 21 3H .. Copyright © 1994 Note 'long-range' coupling. T TTTTTTTTTTTTTTTTT 2.4 2.2 2.0 Proton NMR 1.8 1.6 1.4 1.0 0.8 PPM Carbon 13 NMR
assign the major absorptions in the IR spectra, assign chemical
shifts in both NMR, designate the parent peak in the mass spectra
data and assign the major fragments to their corresponding peaks,
and finally provide the structure for the formula.
MF C9H100 MW 134 SC 10.6 SH 7.5 Mass Spec. Data relative mit abund 5123 77 27 91 100 12 103 105 134 1357 Copyright © 1994 2H2H 2.8 2.PPK Proton NMR 215010 205 206 195 196 PPM Carbon 13...
IR Worksheet 1. For each spectrum below: 1) Label the major peaks with their approximate frequency. 2) Identify the bond vibration and possible functional group associated with each peak. 3) Match the spectra to one of these possible compounds: NH2 TRANSMITTANCE[%] pobo edo "2060 bo zdoo 160 Tobo 560 WAVENUMBER [cm-1] oot 08 TRANSMITTANCE [%] 09 01 02 4000 3500 3000 2500 2000 WAVENUMBER (cm-1] 1500 1000 500 οοο TRANSMITTANCE (6) οο οο οε 4000 3500 3000 1500 1000 2500...
PLEASE CLEARLY
LABEL EACH PEAK ON THE COMPOUND STRUCTURE AND CORRESPONDING PEAK AS
A), B), C).... ON EACH GRAPH
- Write the Structural formula above both the H-NMR and C-NMR
spectra
- Assign each NMR peak as a), b), c), ... on both your
structural formula and corresponding peaks
- Assign the H-NMR splitting pattern multiplicity for each set
of peaks
BU T LER IO CCHIO baya I C-13 NMA TTTTTTTTTTTTTTTTTT 20 10 PPM
assign absorptions, chemical shifts, designate the parent peak in
the mass spectra data and assign major fragments to their
corresponding peaks, and finally provide the structore for the
formula.
MF C1014 MW 134 SC 19.5 SH 10.5 Man Spee. Data relative me abund 27 65 91 100 92 105 134 8 20 Copyright © 1994 래래 7.1 7.2 7.0 6.7 5.6 6.5.2 FM Proton MA 2016 PINO Carbon 13 NMA
Assign functional groups/vibrations (bending, stretching) to
each peak for the computational IR spectrum for carbon dioxide
shown below. From left to right the peak numbers are 1485 cm^-1,
864.5 cm^-1, and 644 cm^-1.
.
40 Transmittar 3000 1000 2000 Wavenumber (cm-1)
3. (3 pts.) Shown below is the IR spectrum 2-acetylcyclohexanone (the structure is provided in the spectrum). 2- acetylcyclohexanone exists as an equilibrium mixture of diketone and two enol forms. Both the diketone and enol forms can be seen in the provide IR spectrum, although the 2 different enols cannot be distinguished. The IR spectra of both enols is essentially identical and so do not be concerned with distinguishing the enols, just assign peaks to a “generic" enol. On the...
2. The following IR spectra each include the structure of the corresponding compound directly on the spectrum (continued on following pages). • Based on the given structures and the information provided in Tables 8.1 and 8.2, assign as many of the major absorptions as possible directly on the spectra o indicating what type of bond O and whether it corresponds to bending or a stretching vibration. Transmittance (%) 0 + 4000 3600 3200 2000 2400 1400 1200 1000 800 600...
Assign each of the following statements with the corresponding type(s) of spectroscopy. Note that some statements may apply for more than one type. Raman Spectroscopy IR Spectroscopy IR Spectroscopy Raman Spectroscopy The excitation source includes a range of wavelengths. A change in vibrational states is brought about by excitation. IR Spectroscopy IR Spectroscopy Raman Spectroscopy The sample absorbs electromagnetic radiation. IR Spectroscopy Spectral peaks are reported in wavenumbers (cm") IR Spectroscopy Raman Spectroscopy The excitation source includes one wavelength. Electronic...
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