Concept explainers
(a)
Interpretation:
One absorption band that can be used to distinguish the given pair has to be named.
Concept introduction:
IR spectral studies: It is a spectroscopic technique which is used to determine the
Wavenumber: It is defined as the number of waves in one centimeter. The wavenumber indicates the location of each signal with respect to the functional group in the molecule and its unit is
Alcohol functional group: It refers to the functional group that contains one
(b)
Interpretation:
One absorption band that can be used to distinguish the given pair has to be named.
Concept introduction:
IR spectral studies: It is a spectroscopic technique which is used to determine the functional groups present in the given compound sample by absorbing characteristic frequency in particular range with respect to the group present in the given sample.
Wavenumber: It is defined as the number of waves in one centimeter. The wavenumber indicates the location of each signal with respect to the functional group in the molecule and its unit is
(c)
Interpretation:
One absorption band that can be used to distinguish the given pair has to be named.
Concept introduction:
IR spectral studies: It is a spectroscopic technique which is used to determine the functional groups present in the given compound sample by absorbing characteristic frequency in particular range with respect to the group present in the given sample.
Wavenumber: It is defined as the number of waves in one centimeter. The wavenumber indicates the location of each signal with respect to the functional group in the molecule and its unit is
(d)
Interpretation:
One absorption band that can be used to distinguish the given pair has to be named.
Concept introduction:
IR spectral studies: It is a spectroscopic technique which is used to determine the functional groups present in the given compound sample by absorbing characteristic frequency in particular range with respect to the group present in the given sample.
Wavenumber: It is defined as the number of waves in one centimeter. The wavenumber indicates the location of each signal with respect to the functional group in the molecule and its unit is
Carbonyl group: The functional group that contains carbon atom which is doubly bonded with the oxygen atom.
Want to see the full answer?
Check out a sample textbook solutionChapter 10 Solutions
Essential Organic Chemistry (3rd Edition)
- Which compounds contain stereocentres? 1 1-chloropentane II. 2-chloropentane III. 3-chloropentane IV. 1,2-dichloropentane Select one: O a. I, II O b. III, IV O c. II, IV O d. I, IIIarrow_forwardWhich compounds contain stereocentres? I. 2-methylpentane II. chlorocyclohexane III. 3-methyl-2-butanol IV. 2-hydroxypropanoic acid Select one: O a. I, II O b. III, IV O c. I, III O d. II, IVarrow_forwardWhich of the indicated carbon atoms in each molecule absorbs farther downfield? a. CH,CH2OCH,CH3 b. BRCH,CHBr2 d. CH,CH=CH2 C. f OCH,arrow_forward
- 2. The following molecule is one enantiomer of methylenedioxymethamphetamine (MDMA). 2a. Circle all of the stereocenters in MDMA 2b. Assign the absolute stereochemistry (R or S) for each stereocenter .CH3 HN H H *CH3arrow_forward1. Assign the E and Z configuration to the following compounds. HOH-C H₂C NC. H₂CH₂C N E CH3 H CH3 CSN-CHEM 241L-Experiment 7: Stereochemist CH₂OH HOH₂C. CI H₂CO₂C. HO₂C N H OCH3 CH₂CH3arrow_forward4. What are the stereocenter assignments for the two molecules below? OH CH,CH, H,C-C-CH(CH32 HC=CH2 a. S, S b. R, R c. S, R d. R, S 5. Which of the following compounds has the highest boiling point? a. 4-methylpentanal b. 2-methyl-3-pentanol c. 3-methyl-2-pentanone d. 2-fluoro-4-methylpentane 6. How many chiral center(s) is/are there in this molecule? a. one b. two c. three d. none с. 1arrow_forward
- An oxygen-containing compound shows an absorption band at 1700 cm', and no absorption at 3300 cm', 2700 cm', or 1100 cm1. Which class of compounds is suggested in the given information? A. Carboxylic Acid B. Ester C. Ketone D. Aldehyde E. Alcoholarrow_forward1. A) What type of shift has occurred to anthracene when compared to benzene? Explain your answer. Bonzene Naphthalene Anthracene Fig.1 Structures of Benzene, Naphthalene, and Anthracene 30 2.0 Benzene Naphthalohe Anthracene 1.0 220.0 300.0 400.0 500.0 00.0 700.0 m Fig.2 Absorption Spectra of Benzene, Naphthalene, and Anthracenearrow_forward2. Compound B has a molecular formula of C₁H₁2O₂. It has a characteristic IR signal at around 1700 cm³¹. Draw the molecular structure of B. 3H 1H 1H 1H L 200 180 160 140 PPM 120 PPM 100 2H 2H 80 60 2H 40 20arrow_forward
- The IR spectrum of a sample contains absorptions at 3050, 2950, and 1620 cm-1. Towhat class of organic compound does this sample most likely belong? ExplainA) alkaneB) alkeneC) alkyneD) esterE) alcoholarrow_forward1. An aliphatic ketone absorbs at 1,715 cm-1. What is the frequency of this vibration in hertz, which is cycles per second or just per second, reciprocal seconds? 2. What is the energy equivalent of this stretching vibration in kcal/mole? 3. Why does 3,4-diethyl-3-hexene not have a carbon to carbon double bond stretching absorption band? 4. Why does a carbon to oxygen double bond absorption band have a greater intensity than a carbon to carbon double bond absorption band? 5. Using only IR, explain in detail how one could most easily differentiate between oct-1-ene and oct-1-yne if all carbon to carbon bonds are ignored. 6. Using only IR, explain in detail how one could most easily differentiate between butan-1-ol and butanoic acid.arrow_forwardCompound C is? Compound C-DEPT 135 90 H3C I 70 CH3 CH 4 I 8 (ppm) CI CH₂CH₂CH-Cl CH₂ CH3 CH3-C-CH3 I Cl 1 I 30 10 CH3CH₂CH₂CH₂-Clarrow_forward