Organic Chemistry
4th Edition
ISBN: 9780073402772
Author: Janice G. Smith
Publisher: MCG
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Chapter 13, Problem 13.8P
What cations are formed in the mass spectrometer by
compounds?
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What cations are formed in the mass spectrometer by α cleavage of each of the following compounds?
What cations are formed in the mass spectrometer by α cleavage of each of the attached compounds?
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Chapter 13 Solutions
Organic Chemistry
Ch. 13 - What is the mass of the molecular ion formed from...Ch. 13 - Prob. 13.2PCh. 13 - Prob. 13.3PCh. 13 - What molecular ions would you expect for the...Ch. 13 - The mass spectrum of 2,3-dimethylpentane also...Ch. 13 - The base peak in the mass spectrum of 2, 2,...Ch. 13 - (a) What mass spectral fragments are formed by ...Ch. 13 - What cations are formed in the mass spectrometer...Ch. 13 - The low-resolution mass spectrum of an unknown...Ch. 13 - Benzene, toluene, and p-xylene BTX are often added...
Ch. 13 - Prob. 13.11PCh. 13 - Prob. 13.12PCh. 13 - Prob. 13.13PCh. 13 - Prob. 13.14PCh. 13 - How do the IR spectra of the isomers cyclopentane...Ch. 13 - How do the three isomers of molecular formula...Ch. 13 - Problem 13.18 What functional groups are...Ch. 13 - Problem-13.19 What are the major IR absorptions in...Ch. 13 - Problem-13.20 What are the major IR absorptions in...Ch. 13 - Prob. 13.20PCh. 13 - Problem-13.22 Propose structures consistent with...Ch. 13 - 13.23 What major IR absorptions are present above ...Ch. 13 - Problem-13.24 The mass spectrum of the following...Ch. 13 - What molecular ion is expected for each compound?Ch. 13 - Which compound gives a molecular ion at m/z= 122,...Ch. 13 - Propose two molecular formulas for each molecular...Ch. 13 - Propose four possible structures for a hydrocarbon...Ch. 13 - Match each structure to its mass spectrum. a. b....Ch. 13 - 13.32 Propose two possible structures for a...Ch. 13 - 13.33 What cations are formed in the mass...Ch. 13 - 13.35 For each compound, assign likely...Ch. 13 - Prob. 13.32PCh. 13 - 13.37 Propose a structure consistent with each...Ch. 13 - 13.38 A low-resolution mass spectrum of the...Ch. 13 - Can the exact mass obtained in a high-resolution...Ch. 13 - 13.39 Primary alcohols often show a peak in their...Ch. 13 - 13.40 Like alcohols, ethers undergo α cleavage by...Ch. 13 - Which of the highlighted bonds absorbs at higher v...Ch. 13 - What major IR absorptions are present above...Ch. 13 - How would each of the following pairs of compounds...Ch. 13 - 13.44 Morphine, heroin, and oxycodone are three...Ch. 13 - Prob. 13.42PCh. 13 - 13.47 Match each compound to its IR spectrum
Ch. 13 - 13.48 Propose possible structures consistent with...Ch. 13 - A chiral hydrocarbon X exhibits a molecular ion at...Ch. 13 - 13.50 A chiral compound has a strong absorption...Ch. 13 - 13.51 Treatment of benzoic acid with followed by...Ch. 13 - 13.52 Treatment of benzaldehyde with in aqueous ...Ch. 13 - Prob. 13.49PCh. 13 - 13.54 Reaction of 2-methylpropanoic acid with ...Ch. 13 - 13.55 Reaction of pentanoyl chloride with lithium...Ch. 13 - Prob. 13.52PCh. 13 - 13.57 Treatment of anisole with and forms P,...Ch. 13 - 13.58 Reaction of with forms compound ,...Ch. 13 - Problem-13.59 The carbonyl absorption of an amide...Ch. 13 - Prob. 13.56PCh. 13 - Problem-13.61 Explain why a ketone carbonyl...Ch. 13 - 13.62 Oxidation of citronellol, a constituent of...
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- Write molecular formulas for compounds that show the following molecular ions in their high-resolution mass spectra, assuming that C, H, N, and O might be present. The exact atomic masses are: 1.007 83 (1H), 12.000 00 (12C), 14.003 07 (14N), 15.994 91 (16O). (a) M+=98.0844 (b) M+=123.0320arrow_forward7 Predict the masses and the structures of the most abundant fragments observed in the mass spectra of the followingcompounds. 4-methylpentan-2-olarrow_forwardDraw the most stable cations formed in the mass spectrometer by a cleavage of the following compound. I OHarrow_forward
- which peaks can be expected when 5-methylhexane-2,4-dione is analyzed by mass spectrometry?arrow_forwardSuggest a mechanism for breaking one of the following compounds in mass spectrometry, with determining the expected base peak B OHarrow_forwardPlease don't provide handwriiten solution...arrow_forward
- Please don't provide handwritten solution...arrow_forwardHow can you distinguish between aldehydes and ketones based on Infra-red spectroscopy?arrow_forwardQ8. How would you distinguish the following molecules using IR and Mass Spectrometry? Please label at least two differences for IR and two for MS. Please draw the mechanism for the formation of fragments which can distinguish the two molecules via mass spectrometry. HOarrow_forward
- 19. For the following reaction, which of the following change(s) in the IR spectrum is consistent with conversion of the reactant to the product? DMSO A. absorption at 3200-3600 cm should disappear B. absorptions at 3200-3600 cm and 1100 om should disappear C. absorption at 1100 cm should disappear, a new absorption at 3100 cm should appear D. absorption at 1720 cm should appear, absorption at 3200-3600 cm should disappear E. none of these O A O B O D O Earrow_forwardTaking a look at the reaction (first image) The following is the mass spectrum of the compound that was isolated as only product of this reaction (second image) The mass spectrum contains a fragment with m/z=43, which among other possibilities may be interpreted as a fragment with the composition C2H5O+. Suggest a structure for this cation, and draw itarrow_forwardPlease written by handarrow_forward
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