Question

bined Spectra Problems All Together: within mbined Spectra Problems friends, the moment has come... pre puring the past two
combined Spectra Problems opther the combined s. Operation 44 mpound displays both an OH and a C-O peak in the IR, both are a
0 0
Add a comment Improve this question Transcribed image text
Answer #1

IR:

They have already clearly mentioned there is no actual OH & C=O groups.

2850-3000 cm-1, strong peaks, sp3 C-H stretch

1350-1480 cm-1, medium, sp3 C-H bending

1150 cm-1, strong, C-O stretch in ether

1HNMR:

4.75 ppm, 4H, triplet - indicates two symmetrical -CH2- groups are interconnected by one -CH2- group

2.7 ppm, 2H, doublet of triplet - indicates above group (one -CH2- group is in between two -CH2- groups)

13CNMR:
72.6 ppm, double intensity than other peak means strong electron withdrawing atom is present and connected to two -CH2-

22.5 ppm, is actually one carbon atom that is -CH2-

Mass:

Molecular ion at m/z 58 ==> molar mass of compound is 58 g/mol

base peak is at m/z 28 ==> H2C=CH2

we already found there are 6 "H" atoms present in unknown from 1HNMR, 3 "C" atoms from 13CNMR

6 + (3 x 12) = 42

molar mass = 58, so 58 - 42 = 16 ==> "O" atom present

Molecular formula is: C3H6O

IHD = [ 2C + 2 + N - H - X] / 2 = [(2 x 3) + 2 - 6] / 2 = 1

IHD = 1, ==> one ring or one double bond

Conclusion: The unknown compound is oxetane ( 1,3-EPOXYPROPANE )

Assign. ppm 72.6 22.5 Assign. Shift (ppm) 4.752 2.704 Ι Ι Ι Ι Ι Ι Ι Ι Ι Ι Ι 180 Ι 160 Ι 140 Ι 120 Ι 80 Ι 60 Ι 40 Ι 20 Ι Ι Ο Ι

Hope this helped you!

Thank You So Much! Please Rate this answer as you wish.("Thumbs Up")

Add a comment
Know the answer?
Add Answer to:
bined Spectra Problems All Together": within mbined Spectra Problems friends, the moment has come... pre puring...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • wolned Spectra Problems it all together": mbined Spectra Problems The Combin friends, the moment has come......

    wolned Spectra Problems it all together": mbined Spectra Problems The Combin friends, the moment has come... During the past two semesters, we have talked about infrared spectros- y (IR), 'H-NMR spectroscopy, "C-NMR spectroscopy, and Mass spec- trometry (MS). We've also talked about using information gathered from the mass spectrum to generate a molecular formula and the index of hydro- gen deficiency which helps us determine information about our compound when there isn't any available. The moment has come in which...

  • bined Spectra Problems it All Together". itting bined Spectra Problems The ting it all friends, the...

    bined Spectra Problems it All Together". itting bined Spectra Problems The ting it all friends, the moment has come... uring the past two semesters, we have talked about infrared spectros- py (IR), 'H-NMR spectroscopy, "C-NMR spectroscopy, and Mass spec- trometry (MS). We've also talked about using information gathered from the mass spectrum to generate a molecular formula and the index of hydro gen deficiency which helps us determine information about our compound when there isn't any available. The moment has...

  • Identify all major functional groups in the IR spectra Identify all peaks in 1H- and isC-NMR...

    Identify all major functional groups in the IR spectra Identify all peaks in 1H- and isC-NMR spectra. Identify the molecular mass of the unknown from the mass spectrum Determine the pattern of fragmentation from the mass spectrum Generate a molecular formula Determine the Index of Hydrogen Deficiency Determine the structure of the unknown compound.

  • Please name the unknown compound based on the images below. Write notes that reasonably justify the...

    Please name the unknown compound based on the images below. Write notes that reasonably justify the structure. Be as detailed as possible and please write very clearly. WILL RATE for detailed answer!! Hint: has 2 carbon atoms but no more than 7. 1. Identify all major functional groups in the IR spectra 2. Identify all peaks and H and C-NMR spectra 3. Identify the molecular mass of the unknown from the mass spectrum 4. Determine the pattern of fragmentation from...

  • The molecular formulas IR and 1H NMR spectra of different organic compounds are shown below. the 1 H NMR all run that...

    The molecular formulas IR and 1H NMR spectra of different organic compounds are shown below. the 1 H NMR all run that 300 MHz in CDCl3. identify the compound by interpreting both the spectrum. All piece must be assigned for the appropriate functional groups (IR) and protons (NMR) to earn full credit. The molecular formulas IR and 1H NMR spectra of different organic compounds are shown below. the 1 H NMR all run that 300 MHz in CDCl3. identify the...

  • Putting It Together: Spectroscopy 1. You identity a new compound X Mass spectroscopy suggests a molecular...

    Putting It Together: Spectroscopy 1. You identity a new compound X Mass spectroscopy suggests a molecular forma following IR and proton NMR spectra are recorded: troscopy suggests a molecular formula of CH120, and the Wavelength (m) 0.05 Absorbance 80.40 0.60 204 4000 3500 3000 2500 100 500 400 200 2000 1800 1600 1400 1200 1000 Frequency (cm ) 200 500 TAHT 31 2H 1 H 6.0 5.0 4.0 8 (ppm) Deduce the structure of compound X, and explain the assignment...

  • Hints for identifying compounds in multiple-choice problems (problems 1:5); 1. Closely compare the given compounds. Determine...

    Hints for identifying compounds in multiple-choice problems (problems 1:5); 1. Closely compare the given compounds. Determine which piece of information (molecular weight from MS, number of peaks in the NMR, presence of a special functional group in the IR, etc) would be the easiest for distinguishing between the given compounds. You might not need to use all types of given spectra to find your correct compound! 2. Based on your answer from step 1, consult the appropriate spectrum first. For...

  • determine the structure of your unknown from the molecular formula, IR, and 13C NMR spectra. assign all of your 13C NMR...

    determine the structure of your unknown from the molecular formula, IR, and 13C NMR spectra. assign all of your 13C NMR absorptions. IR & 1C NMR Lab Unknown Your group's mission is to determine the structure of your unknown from the molecular forrmula, IR and 13C NMR spectra. Assign all of your C NMR absorptions. You want to know which resonances correspond to which parts of the product's structure. The best way to do this is to draw a picture...

  • 91T Q9) Identify the unknown aromatic compound using the following spectra. Use the 'H NMR splitting...

    91T Q9) Identify the unknown aromatic compound using the following spectra. Use the 'H NMR splitting in the aromatic region to determine the substitution pattern on the aromatic ring. Label and assign all relevant peaks on the IR and NMR spectra. For the Mass Spectrum, label the molecular ion peak, base peak, and any halogen isotopes, along with any mass losses (change in m/z between peaks) that are helpful in determining your structure. ortho meta arbitrary units 140 160 180...

  • need help on quetion 6 & 7 6 HAMK 1 CNMR 240 220 200 180 140...

    need help on quetion 6 & 7 6 HAMK 1 CNMR 240 220 200 180 140 160 120 100 60 40 20 ppm IR MS 404 3000 2000 Propose a compound for that would furnish all of the above spectra. (1 pt) go zo arbitrary intensty 7 H NMK 12.0 10.5 9.0 7.5 6.0 4.5 3.0 15 C NMR 240 220 160 200 180 140 120 100 Ppm IR tóo Propose a compound that would furnish all of the above...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT