Concept explainers
Interpretation:
The structure of the compound has to be identified from the given data.
Concept introduction:
Spectroscopy:
It is study of the interaction of matter and
IR frequency (cm-1):
It is the number of wave crests that pass by a given point in one second frequency has units of hertz (Hz).
Stretch vibrations:
It is a vibration occurring along the line of the bond a stretching vibration changes the bond length.
Bending vibrations:
It is a vibration that does not occur along the line of the bond, bending vibration changes the bond angle.
Mass spectroscopy:
Interpreting a mass spectrum:
Each m/z values is the m/z value of one the fragments to the nearest whole number.
The peak with the highest m/z value in the molecular ions (M+), the fragment that results when the molecules lose electrons as result of being bombarding by the electron beam.
The m/z value of the molecular ion gives the molecular mass of the compound.
Peaks with smaller m/z values, fragment ion peak represent positively charged fragments of the molecular ion.
Base peak of mass spectrum:
The base peak is the one of highest (or) tallest peak, it has great abundance. It has the greatest relative abundance because it is generally the most stable positively charged fragment.
Given information:
The absorption value is at 1584, 1478, and 1446 cm-1 and it has M+ = 114, 112 and 77.
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Chapter 12 Solutions
EBK ORGANIC CHEMISTRY
- AN IR spectrum, a 13 CMR spectrum, and a 1 HMR spectrum were obtained for an unknown structure with a molecular formula of C9H10. Draw the structure of this compound.arrow_forwardAN IR spectrum, a 13 CMR spectrum, and a 1 HMR spectrum were obtained for an unknown structure with a molecular formula of C9H10. Draw the structure of this compound.arrow_forward(a) What is the hybridization of the carbon in the methyl cation (CH3*) and in the methyl anion (CH3¯)? (b) What is the approximate H-C-H bond angle in the methyl cation and in the methyl anion?arrow_forward
- Q8: Draw the resonance structures for the following molecule. Show the curved arrows (how you derive each resonance structure). Circle the major resonance contributor.arrow_forwardQ4: Draw the Lewis structures for the cyanate ion (OCN) and the fulminate ion (CNO). Draw all possible resonance structures for each. Determine which form for each is the major resonance contributor.arrow_forwardIn the following molecule, indicate the hybridization and shape of the indicated atoms. CH3 N CH3 HÖ: H3C CI: ::arrow_forward
- Q3: Draw the Lewis structures for nitromethane (CH3NO2) and methyl nitrite (CH3ONO). Draw at least two resonance forms for each. Determine which form for each is the major resonance contributor.arrow_forwardQ1: Draw a valid Lewis structures for the following molecules. Include appropriate charges and lone pair electrons. If there is more than one Lewis structure available, draw the best structure. NH3 Sulfate Boron tetrahydride. C3H8 (linear isomer) OCN NO3 CH3CN SO2Cl2 CH3OH2*arrow_forwardQ2: Draw all applicable resonance forms for the acetate ion CH3COO. Clearly show all lone pairs, charges, and arrow formalism.arrow_forward
- Please correct answer and don't used hand raitingarrow_forward9. The following reaction, which proceeds via the SN1/E1 mechanisms, gives three alkene products (A, B, C) as well as an ether (D). (a) Show how each product arises mechanistically. (b) For the alkenes, determine the major product and justify your answer. (c) What clues in the reaction as shown suggest that this reaction does not go by the SN2/E2 mechanism route? (CH3)2CH-CH-CH3 CH3OH 1 Bl CH3OH ⑧· (CH3)2 CH-CH=CH2 heat H ⑥③ (CH3)2 C = C = CH3 © СнЗ-С-Снаснз сна (CH 3 ) 2 C H G H CH 3 оснзarrow_forwardPlease Don't used hand raitingarrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage LearningEBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT