Question

1) What are acylium ions, and why are they commonly seen in MS spectra of compounds...

1) What are acylium ions, and why are they commonly seen in MS spectra of compounds with carbonyl compounds? Which acylium ions would you expect to see in the MS spectrum of a mixture of the following two compounds?

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #2

An acylium ion is that having a general formula

R-C+=O

Usually, stable fragments are observed in mass spectra

Acylium ion is relatively stable due to its resonance structures

R-C+=O can also exists as R-CO+.

This shift is due to the shift of lone pair in O atom to bond.

Thus acylium ions are stable and they are usually observed in spectra of the carbonyl compounds. In most of the cases, it will be the base peak

For the last part of the question, compounds are not given

answered by: anonymous
0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
What differences or similarities would you expect to see when you compare the mass spectra of...
What differences or similarities would you expect to see when you compare the mass spectra of 2-ethoxy-2-mehtylpropane with the mass spectrum diisopropyl ether? Draw the structure and indicate the m/z value for the more significant peaks.
What differences would you expect to see in the IR spectra of benzaldehyde and the IR...
What differences would you expect to see in the IR spectra of benzaldehyde and the IR spectra of benzoin
Halogenated compounds are particularly easy to identify by their mass spectra because chlorine and bromine occur...
Halogenated compounds are particularly easy to identify by their mass spectra because chlorine and bromine occur naturally as mixtures of two abundant isotopes. Chlorine occurs as 35Cl (75.8%) and 37Cl (24.2%); Bromine occurs as 79Br (50.7%) and 81Br (49.3%); Boron compounds also stand out owing to the two isotopes 10B (19.9%) and 11B (80.1%). For the compound Bromoethane, C2H5Br: At what masses do the molecular ions occur? ___________________ (List in order of increasing mass separated by commas, e.g. 120,122.) What...
The TLC chromatogram shows the result for a separation of a mixture of three compounds using...
The TLC chromatogram shows the result for a separation of a mixture of three compounds using a solvent of medium polarity. Only two spots are visible because two compounds did not separate. If spot A represents a mixture of two compounds, would you be able to separate the two components by decreasing or increasing the solvent polarity? Please explain. Sketch the TLC’s that you would expect to see if you were to develop a TLC in a) a polar solvent,...
1. What are 2 major difference you expect to see between the IR spectra of 2-naphthol...
1. What are 2 major difference you expect to see between the IR spectra of 2-naphthol (starting material) and 2-butoxynaphthalene (product). Justify your answer by listing specific functional groups and their respective wavenumbers. 2 why is butyl iodide preferred over butyl chloride in the williamson ether synthesis?
11.5. In a MS-MS fragmentation experiment you detect the following set of y-ions arising from a...
11.5. In a MS-MS fragmentation experiment you detect the following set of y-ions arising from a long peptide. a) What is the partial peptide sequence you can determine from these data? 120.13 257.27 314.32 427.48 583.67 b) The terminal residue is observed to be 19 mass units larger than expected. Why?
7. In biology, the roles of transition metal ions can be broadly grouped into two classifications:...
7. In biology, the roles of transition metal ions can be broadly grouped into two classifications: redoxchemistry (catalysis, electron transfer, etc.) and acid-base chemistry (catalysis, structural, etc.). (a) List three metal ions that commonly participate in biological redox chemistry, and give examplesof how they participate. (b) Compare this list to metal ions commonly participating in acid-base chemistry. Discuss the overlapof these two groups of metal ions. (e.g., why are some used for one of these functions and not for theother?)...
Questions 1 & 2 relate to the preparation of Benzoin from Benzaldehyde (thiamine as catalyst) *Predicted...
Questions 1 & 2 relate to the preparation of Benzoin from Benzaldehyde (thiamine as catalyst) *Predicted outcomes* 1. What distinguishing feature in the 13C NMR spectrum of your product would be a good indication that you have successfully synthesized benzoin from benzaldehyde? Be specific. Use numbers. 2. What distinguishing feature in the 13C NMR spectrum of your product would be a good indication that your product is contaminated with unreacted benzaldehyde? Be specific. Use numbers. Hint: the SDBS Spectral Database...
Questions 1 & 2 relate to the preparation of Benzoin from Benzaldehyde (thiamine as catalysts) *Predicted...
Questions 1 & 2 relate to the preparation of Benzoin from Benzaldehyde (thiamine as catalysts) *Predicted outcomes* 1. What distinguishing feature in the 1H NMR spectrum of your product would be a good indication that you have successfully synthesized benzoin from benzaldehyde? Be specific. Use numbers. 2. What distinguishing feature in the 1H NMR spectrum of your product would be a good indication that your product is contaminated with unreacted benzaldehyde? Be specific. Use numbers. Hint: the SDBS Spectral Database...
1. In a Wet Column Chromatography experiment. My product does have two compounds. What type of...
1. In a Wet Column Chromatography experiment. My product does have two compounds. What type of solvent / solvent mixture should I use in my column to separate the two compounds? (A specific solvent is not needed, but you should clarify what properties the solvent have). 2. In Dehydration of 2-methylcyclohexanol experiment. Why I even have to dry my product now that I have already extracted all the water?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT