Homework Answers
Hi the unknown is 2,5-dimethyl-2,4-hexadiene
Given M.F: C8H14
IHD = [(2 x 8) + 2 - 14] / 2 = 2, means either 2 double bonds, 2 rings, or combination
HNMR shows 2 signals, 1 from alkene region & 1 from aliphatic region
CNMR shows 2 signals from alkene region & 2 signals from aliphatic region.
IR:
3024 cm-1, medium, sp2 C-H stretch
2967 to 2857 cm-1, strong, due to sp3 C-H stretch
1621 & 1650 cm-1, medium, due to sp2 C=C stretch
1388 & 1466 cm-1, strong, due to sp3 C-H bending
841 cm-1, strong, due to sp2 =C-H bending
Hope this helped you!
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determine the structure of the compound and label the peaks on
spectra
left to right compound...
The 1H-NMR and 13C-NMR spectra of an unknown compound (formula C8H10) are shown below. Draw the structure of the unknown...
The 1H-NMR and 13C-NMR spectra of an unknown compound (formula
C8H10) are shown below. Draw the structure of the unknown compound.
The total integration of the peaks at around 7 ppm is 4. The
integration of the peak at around 2 ppm is 6.
7 6 5 4 3 ppm TTTTTTTTTTTTTTTT 200 180 160 140 120 100 80 60 40 20 0 pom CH3 Create OscerSketch Answer 8 Incorrect: Answer has an incorrect structure.
Create OscerSkotch Answer 6 Th e 1H-NMR and 13C-NMR spectra of an unknown compound s (formula...
Create OscerSkotch Answer 6 Th e 1H-NMR and 13C-NMR spectra of an unknown compound s (formula CoMzo) are shown below. Draw the structure of B. The total integration of the peaks at around 7 ppm is 4. The integration of the peak at around 2 ppm is 6 ppm 200 180 160 140 120 100 060 4020
Label the spectra and propose a structure for the compound. The IR spectra are listed in...
Label the spectra and propose a structure for the compound.
The IR spectra are listed in the translation.
Compound 2 R Spectrum Medisch 3400 1720 4000 3000 1600 vomi) 1200 183 Mass Spectrum So base UV Spectrum mas 253 nm 109,9€ 2.6) homas 250 nm 109,96 2.7) ho mar 284 m 109,0 2.5) M -220N) CH2O| 280 40 80 120 160 200 240 13C NMR Spectrum (100 . CDC, DEPT CH CH CH protondeco 200 160 1 20 80 400...
Information: Each spectra below was obtained from a pure compound Mass Spectrum parent peaks (M) are listed for all ex...
Information: Each spectra below was obtained from a pure compound Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong (s) unless otherwise indicated for signals above 1500 cm *H NMR Spectra, the integral is given in number of hydrogens (#H) or as a relative ratio. Important coupling constants (-values) are listed next to the peaks for some examples. For some spectra, an inset (grey box) is also given showing a "zoom-in" on an important...
3. (a) Provide a structure for the compound with the formula C.H.., that has the following...
3. (a) Provide a structure for the compound with the formula C.H.., that has the following IR and NMR spectra. (b) Name the molecule. TRANSMETENCES 12 10 HSP-03-089 ppm 13 C-NMR spectrum on next page... 160 140 120 80 60 40 20 200 180 COS-04-995 6 100 ppm
The following spectra belong to the compound shown in red below. Assign the labeled peaks (1-5)...
The following spectra belong to the compound shown in red below. Assign the labeled peaks (1-5) in the 13c spectrum to the correct carbon atoms (a-e) and the proton signals (8-9) in the 'H spectra to the correct atoms 13C NMR Spectrum (100.0 MH2 CDCI, solution) DEPT CH CH. CH 3 prolon de coupled 200 160 120 80 40 0 8 (ppm) "H NMR Spectrum (400 MHE. COCI, solution) DOCH OCH 7 expansion expansion 45 pom 35 30 25 TUS...
Bellow is the 13C NMR spectra including the integrations of the compound. Show the structure of...
Bellow is the 13C NMR spectra including the integrations of the
compound. Show the structure of each (remember from the integration
that S singlet, d doublet, t triplet …. So on)
Draw the compound structure for each spectrum and show every
line belong to which carbon in the molecule
Example:
Problem (3) molecular formula is: C6H8O
(cyclic compound)
H O CDClj 100 80 60 40 20 160 140 120 220 200 180 PPM (8)
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are...
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong (s) unless otherwise indicated for signals above 1500 cm "H NMR Spectra, the integral is given in number of hydrogens (#H) or as a relative ratio. Important coupling constants (J-values) are listed next to the peaks for some examples. For some spectra, an inset (grey box) is also given showing a "zoom-in" on an important...
On the attached image are 1H NMR, 13C NMR, and IR spectra of a compound with...
On the attached image are 1H NMR, 13C NMR, and IR
spectra of a compound with the formula C4H8O. 1H NMR signal at 1.2
is caused by 3 hydrogens, the sigbal at 2.1 is caused by 3
hydrogens, and the signal at 2.5 is caused by 2 hydrogens. Identify
the compound.
CH 1110 9 8 7 6?4 Problem 6. 'H NMR spectrum of compound HsO Problem 6. 13C NMR spectrum of compound C4HsO 200 180 160 140 120 100 80...
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are...
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR pea ks listed are strong (s) unless otherwise indicated for signals above 1500 cm H NMR Spectra, the integral is given in number of hydrogens (#H) or as a relative ratio. Important coupling constants (J-values) are listed next to the peaks for some examples. For some spectra, an inset (grey box) is also given showing a "zoom-in" on an...
The 1H-NMR and 13C-NMR spectra of an unknown compound (formula
C8H10) are shown below. Draw the structure of the unknown compound.
The total integration of the peaks at around 7 ppm is 4. The
integration of the peak at around 2 ppm is 6.
7 6 5 4 3 ppm TTTTTTTTTTTTTTTT 200 180 160 140 120 100 80 60 40 20 0 pom CH3 Create OscerSketch Answer 8 Incorrect: Answer has an incorrect structure.
Create OscerSkotch Answer 6 Th e 1H-NMR and 13C-NMR spectra of an unknown compound s (formula CoMzo) are shown below. Draw the structure of B. The total integration of the peaks at around 7 ppm is 4. The integration of the peak at around 2 ppm is 6 ppm 200 180 160 140 120 100 060 4020
Label the spectra and propose a structure for the compound.
The IR spectra are listed in the translation.
Compound 2 R Spectrum Medisch 3400 1720 4000 3000 1600 vomi) 1200 183 Mass Spectrum So base UV Spectrum mas 253 nm 109,9€ 2.6) homas 250 nm 109,96 2.7) ho mar 284 m 109,0 2.5) M -220N) CH2O| 280 40 80 120 160 200 240 13C NMR Spectrum (100 . CDC, DEPT CH CH CH protondeco 200 160 1 20 80 400...
Information: Each spectra below was obtained from a pure compound Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong (s) unless otherwise indicated for signals above 1500 cm *H NMR Spectra, the integral is given in number of hydrogens (#H) or as a relative ratio. Important coupling constants (-values) are listed next to the peaks for some examples. For some spectra, an inset (grey box) is also given showing a "zoom-in" on an important...
3. (a) Provide a structure for the compound with the formula C.H.., that has the following IR and NMR spectra. (b) Name the molecule. TRANSMETENCES 12 10 HSP-03-089 ppm 13 C-NMR spectrum on next page... 160 140 120 80 60 40 20 200 180 COS-04-995 6 100 ppm
The following spectra belong to the compound shown in red below. Assign the labeled peaks (1-5) in the 13c spectrum to the correct carbon atoms (a-e) and the proton signals (8-9) in the 'H spectra to the correct atoms 13C NMR Spectrum (100.0 MH2 CDCI, solution) DEPT CH CH. CH 3 prolon de coupled 200 160 120 80 40 0 8 (ppm) "H NMR Spectrum (400 MHE. COCI, solution) DOCH OCH 7 expansion expansion 45 pom 35 30 25 TUS...
Bellow is the 13C NMR spectra including the integrations of the
compound. Show the structure of each (remember from the integration
that S singlet, d doublet, t triplet …. So on)
Draw the compound structure for each spectrum and show every
line belong to which carbon in the molecule
Example:
Problem (3) molecular formula is: C6H8O
(cyclic compound)
H O CDClj 100 80 60 40 20 160 140 120 220 200 180 PPM (8)
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong (s) unless otherwise indicated for signals above 1500 cm "H NMR Spectra, the integral is given in number of hydrogens (#H) or as a relative ratio. Important coupling constants (J-values) are listed next to the peaks for some examples. For some spectra, an inset (grey box) is also given showing a "zoom-in" on an important...
On the attached image are 1H NMR, 13C NMR, and IR
spectra of a compound with the formula C4H8O. 1H NMR signal at 1.2
is caused by 3 hydrogens, the sigbal at 2.1 is caused by 3
hydrogens, and the signal at 2.5 is caused by 2 hydrogens. Identify
the compound.
CH 1110 9 8 7 6?4 Problem 6. 'H NMR spectrum of compound HsO Problem 6. 13C NMR spectrum of compound C4HsO 200 180 160 140 120 100 80...
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR pea ks listed are strong (s) unless otherwise indicated for signals above 1500 cm H NMR Spectra, the integral is given in number of hydrogens (#H) or as a relative ratio. Important coupling constants (J-values) are listed next to the peaks for some examples. For some spectra, an inset (grey box) is also given showing a "zoom-in" on an...
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