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11. (5 pts) The structures of three common antihistamines, Pheniramine, Chlorpheniramine (Chlor-TrimetonTM) and Brompheniramine (Dimetapp") are...
label each major peak with a molecular formula (including charge) label the molecular ion peak as "M+" (if present) labe...
label each major peak with a molecular formula (including
charge)
label the molecular ion peak as "M+" (if present)
label major peaks other than the molecular ion with three
things:
1) the mass to charge ratio
2) the structure or formula for that charged fragment
3) another formula to show which fragment was lost by the molecular
ion to form that ion
Mass spec NEUTRAL COMPOUND 100- 80 2-6utanene 60 40 20- 75 60 65 70 35 40 45 10...
Name: 2.2 Hydrogen The relative isotopic abundance for hydrogen 2H: 1H is about 0.00016: 1, and...
Name: 2.2 Hydrogen The relative isotopic abundance for hydrogen 2H: 1H is about 0.00016: 1, and therefore hydrogen isotopic substitutions are unlikely to play a major role in any observed (M+1) peak. The isotope 2H is called "heavy hydrogen or deuterium, and is given the symbol D. We can often provide support for mechanisms by incorporating isotopes such as 13C or D into compounds using isotopically labelled reagents. Mass spectrometry is a useful tool for analyzing such isotopic incorporation by...
provide structures for the spectral data provided Pages 1-5: provide the 5 structures for the spectral...
provide structures for the spectral data provided
Pages 1-5: provide the 5 structures for the spectral data provided. For full credit, you must be sure to assign/label all the NMR peaks and assign the major IR bands including those readily identifiable in the fingerprint region (use the IR spectral tables handed out in class). If you do not label anything on the spectra, you will lose most of the points for this problem set. Hint for the problems listed without...
8. Sev eral students take a 1H NMR and 13C NMR spectra for an unknown compound...
8. Sev eral students take a 1H NMR and 13C NMR spectra for an unknown compound They each propose something about the identity of the unknown. For each argument, determine whether the argument is: (10 pts) MS: No M+2 peak present, the MW is an odd number 13C NMR: 130, 125, 65, 30, 15, 10 H NMR: 5.8 (1H dd) 5.5 1.3(3H, d 1.1 (3, t) A scientific argument is valid if the data and conclusion are both true, and...
Could you describe the differences of the chemical structures and solubility as well as boiling points...
Could you describe the differences of the chemical structures
and solubility as well as boiling points and why each one came out
sooner than the next? Thank you
Problem 3. Explaining a GLC Elution Order (6p). Below is a table of physical data for isopropanol, ethyl acetate and propyl acetate. Problem 3 Physical Constants Table Chemical Name Chemical Formula Chemical Structure Molar Mass (g/mol) Boiling Point (*) Density (g/ml) OH Isopropanol CH 0 60.1 82.5 0.786 H3C CHE Ethyl acetate...
3. For the following molecules perform the following: (4 pts each, 8 pts total) A. Use...
3. For the following molecules perform the following: (4 pts each, 8 pts total) A. Use the molecular formula to calculate the DU B. Using the IR spectrum fill in the table below, identifying the significant peaks, their wavenumbers, their shape, their intensity, and the bond type the peaks represent. For peaks that represent the same bond type you may place them in the same row. (i.e. 2964, 2934 cm-1, sharp, strong, sp3 C-H) C. Using all of the information...
1. For each of the following structures, please fill in the missing information below or- Cl...
1. For each of the following structures, please fill in the missing information below or- Cl Molecular Formula:R_ Molecular Formula: DBE:_ DBE: 2. Given the reaction below, answer the following questions. Br HBr As the above reaction progresses to completion, what peak in the IR would you expect to disappear? Whereabout is the peak located in cm? a. b. Why does the M+1 peak NOT change from reactant to product? c. How many peaks (not the splitting pattern, just the...
4. (16 pts) The drug Buspirone, marketed as Buspar Tabs "M, is an anxiolytic agent and...
4. (16 pts) The drug Buspirone, marketed as Buspar Tabs "M, is an anxiolytic agent and a serotonin receptor agonist belonging to the azaspirodecanedione class of compounds. Its structure is unrelated to those of the benzodiazepine anti-anxiety agents, but it has an efficacy comparable to diazepam (Valium TM). It is used for the management of GAD, generalized anxiety disorders. [Ref: PubChem/DrugBank 13 15 12 11 16 N 18 10 28 24 20 27 21 Buspirone, Buspar Tabs 26 a. (2...
4. (16 pts) The drug Buspirone, marketed as Buspar Tabs "M, is an anxiolytic agent and...
4. (16 pts) The drug Buspirone, marketed as Buspar Tabs "M, is an anxiolytic agent and a serotonin receptor agonist belonging to the azaspirodecanedione class of compounds. Its structure is unrelated to those of the benzodiazepine anti-anxiety agents, but it has an efficacy comparable to diazepam (Valium TM). It is used for the management of GAD, generalized anxiety disorders. [Ref: PubChem/DrugBank 13 15 12 11 16 N 18 10 28 24 20 27 21 Buspirone, Buspar Tabs 26 a. (2...
8. Use the spectral data below to propose structure(s) for the compound labeled Y, which can...
8. Use the spectral data below to propose structure(s) for the compound labeled Y, which can be identified from the MS, IR, spectra presented below. (2 pts) a) Determine the molecular formula (MF = C.H. e) from the molecular ion on the MS using the Rule 13 where (MW/13) En+r. Since the M+2 peak is approximately 1/3 of the intensity of the molecular peak, this is an indication that the compound contain a cl _atom. Make the necessary substitution for...
label each major peak with a molecular formula (including
charge)
label the molecular ion peak as "M+" (if present)
label major peaks other than the molecular ion with three
things:
1) the mass to charge ratio
2) the structure or formula for that charged fragment
3) another formula to show which fragment was lost by the molecular
ion to form that ion
Mass spec NEUTRAL COMPOUND 100- 80 2-6utanene 60 40 20- 75 60 65 70 35 40 45 10...
Name: 2.2 Hydrogen The relative isotopic abundance for hydrogen 2H: 1H is about 0.00016: 1, and therefore hydrogen isotopic substitutions are unlikely to play a major role in any observed (M+1) peak. The isotope 2H is called "heavy hydrogen or deuterium, and is given the symbol D. We can often provide support for mechanisms by incorporating isotopes such as 13C or D into compounds using isotopically labelled reagents. Mass spectrometry is a useful tool for analyzing such isotopic incorporation by...
provide structures for the spectral data provided
Pages 1-5: provide the 5 structures for the spectral data provided. For full credit, you must be sure to assign/label all the NMR peaks and assign the major IR bands including those readily identifiable in the fingerprint region (use the IR spectral tables handed out in class). If you do not label anything on the spectra, you will lose most of the points for this problem set. Hint for the problems listed without...
8. Sev eral students take a 1H NMR and 13C NMR spectra for an unknown compound They each propose something about the identity of the unknown. For each argument, determine whether the argument is: (10 pts) MS: No M+2 peak present, the MW is an odd number 13C NMR: 130, 125, 65, 30, 15, 10 H NMR: 5.8 (1H dd) 5.5 1.3(3H, d 1.1 (3, t) A scientific argument is valid if the data and conclusion are both true, and...
Could you describe the differences of the chemical structures
and solubility as well as boiling points and why each one came out
sooner than the next? Thank you
Problem 3. Explaining a GLC Elution Order (6p). Below is a table of physical data for isopropanol, ethyl acetate and propyl acetate. Problem 3 Physical Constants Table Chemical Name Chemical Formula Chemical Structure Molar Mass (g/mol) Boiling Point (*) Density (g/ml) OH Isopropanol CH 0 60.1 82.5 0.786 H3C CHE Ethyl acetate...
3. For the following molecules perform the following: (4 pts each, 8 pts total) A. Use the molecular formula to calculate the DU B. Using the IR spectrum fill in the table below, identifying the significant peaks, their wavenumbers, their shape, their intensity, and the bond type the peaks represent. For peaks that represent the same bond type you may place them in the same row. (i.e. 2964, 2934 cm-1, sharp, strong, sp3 C-H) C. Using all of the information...
1. For each of the following structures, please fill in the missing information below or- Cl Molecular Formula:R_ Molecular Formula: DBE:_ DBE: 2. Given the reaction below, answer the following questions. Br HBr As the above reaction progresses to completion, what peak in the IR would you expect to disappear? Whereabout is the peak located in cm? a. b. Why does the M+1 peak NOT change from reactant to product? c. How many peaks (not the splitting pattern, just the...
4. (16 pts) The drug Buspirone, marketed as Buspar Tabs "M, is an anxiolytic agent and a serotonin receptor agonist belonging to the azaspirodecanedione class of compounds. Its structure is unrelated to those of the benzodiazepine anti-anxiety agents, but it has an efficacy comparable to diazepam (Valium TM). It is used for the management of GAD, generalized anxiety disorders. [Ref: PubChem/DrugBank 13 15 12 11 16 N 18 10 28 24 20 27 21 Buspirone, Buspar Tabs 26 a. (2...
4. (16 pts) The drug Buspirone, marketed as Buspar Tabs "M, is an anxiolytic agent and a serotonin receptor agonist belonging to the azaspirodecanedione class of compounds. Its structure is unrelated to those of the benzodiazepine anti-anxiety agents, but it has an efficacy comparable to diazepam (Valium TM). It is used for the management of GAD, generalized anxiety disorders. [Ref: PubChem/DrugBank 13 15 12 11 16 N 18 10 28 24 20 27 21 Buspirone, Buspar Tabs 26 a. (2...
8. Use the spectral data below to propose structure(s) for the compound labeled Y, which can be identified from the MS, IR, spectra presented below. (2 pts) a) Determine the molecular formula (MF = C.H. e) from the molecular ion on the MS using the Rule 13 where (MW/13) En+r. Since the M+2 peak is approximately 1/3 of the intensity of the molecular peak, this is an indication that the compound contain a cl _atom. Make the necessary substitution for...
Most questions answered within 3 hours.
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