1a) Shown below are the mass spectrum of a substituted benzene. The base peak is the molecular ion. Posted below are the 13 C NMR and 1 H NMR spectra (ignore the 1H peak at 3.5 and 13C peak that is a triad at 77 ppm) Provide the structure of the molecule from these spectra.
1b) Provide a synthesis of the molecule starting from benzene
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1a) Shown below are the mass spectrum of a substituted benzene.
The base peak is the...
Formula: C3H7Br Mass Spectrum % of base peak M+ 122/124 IR Spectrum (liquid film) 40 80...
Formula: C3H7Br Mass Spectrum % of base peak M+ 122/124 IR Spectrum (liquid film) 40 80 200 240 280 120 160 m/e 4000 3000 1200 800 2000 V (cm 1600 ) TT 13C NMR Spectrum (50.0 MHz, CDCI, solution) solvent 200 160 120 80 40 0 S (ppm) 1H NMR Spectrum (200 MHz, CDCI, solution) 6H, d expansions 4.6 ' 4.0 ppm 2: 0 1 4 ppm 1H, m _ TMS 10 9 8 7 6 5 4 3 2...
16. Propose a structure for a molecule of formula CaHsCl which gave the following 1H NMR spectrum. PPM 17. Propose a st...
16. Propose a structure for a molecule of formula CaHsCl which gave the following 1H NMR spectrum. PPM 17. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 148, an IR peak at 1680 cm'and gives the following H and 13C NMR spectra 3H зн 2H 2H 2H 3 5 2 7 6 4 PPM 160 140 180 60 220 200 20 0 120 100 80 40 PPM -
The m/z of the M+ peak of an unknown is 146, and this peak is the base peak (i.e., the tallest pe...
The m/z of the M+ peak of an unknown is 146, and this peak is the base peak (i.e., the tallest peak). (See below mass spectrum of the unknown.) Combustion analysis data indicate 49.03% carbon and 2.74% hydrogen. The IR spectrum and 13C-NMR spectrum of this compound also were obtained and are shown below. Given this information, what is the name of this unknown molecule? MASS SPECTRUM 100 80 60 面 40 20 0.0 120 160 40 80 0.0 m/z...
The low-resolution mass spectrum of an unknown monosubstituted benzene showed a molecular ion (M+) peak at...
The low-resolution mass spectrum of an unknown monosubstituted benzene showed a molecular ion (M+) peak at m/z 150. Combustion analysis of a sample of this compound indicated that the compound contained C, H, and O only and had an empirical formula of C3H1002. The IR spectrum of the unknown compound is shown below. The 'H NMR spectrum of the unknown compound did not show a peak in the 9.10 ppm range. D 4000 9000 2000 1500 1000 RAVENUGERII What is...
Compound C has molecular formula C9H10O. The mass spectrum shows a parent ion (M+) peak at...
Compound C has molecular formula C9H10O. The mass spectrum shows a parent ion (M+) peak at 134 and a base peak (largest peak) at 105 atomic mass units. The IR spectrum shows major signals at 3029, 2925, 2721, 1708, 1495, 1452, 1375, 1152, 745, and 699 cm-1. The 1H-NMR spectrum shows signals at 2.35 (singlet, 3H), 3.65 (doublet, 2H), 7.11 (doublet 2H), 7.18 (doublet, 2H), and 9.73 (triplet, 1H) ppm. The 13C-NMR spectrum shows signals at 21.1, 50.2, 128.7, 129.5,...
The NMR spectrum suggests the formation of the meta-substituted product, but NH2 is an ortho/para directing...
The NMR spectrum suggests the formation of the
meta-substituted product, but NH2 is an ortho/para directing group.
Using the given chemicals, provide a mechanism to arrive at the
meta-substituted product.
5. Adam Splidda and Flo Wrene were asked to make 4-aminobenzenesulfonic acid. They came up with the plan below. The Plan: NH2 SO3 NH2 H2SO4 HO3S 4-aminobenzenesulfonic acid The product: S, 1H t, 1H s, 2H d d, 1H 1H s, 1H 0 4 PPM Were they successful? Draw the...
Molecule C: Molecule D: Can someone PLEASE EXPLAIN the answers?????? 2. Below are the 'H and...
Molecule C:
Molecule D:
Can someone PLEASE EXPLAIN the answers??????
2. Below are the 'H and 13C NMR spectra for four isomers of C&H:02. Provide the structure that produced each set of spectra. Molecule A: 'H NMR 3H 3H no coupling, so no adjacent carbons with hydrogen atoms 2H 5 3 2 0 PPM 13C NMR aldehyde or ketone no aldehyde in 1H NMR, SO ketone 220 200 180 160 140 120 100 PPM 80 60 40 20 0 Molecule...
(c) Compound C has molecular formula C9H10O. The mass spectrum shows a parent ion (M+) peak...
(c) Compound C has molecular formula C9H10O. The mass spectrum shows a parent ion (M+) peak at 134 and a base peak (largest peak) at 105 atomic mass units. The IR spectrum shows major signals at 3029, 2925, 2721, 1708, 1495, 1452, 1375, 1152, 745, and 699 cm-1. The 1H-NMR spectrum shows signals at 2.35 (singlet, 3H), 3.65 (doublet, 2H), 7.11 (doublet 2H), 7.18 (doublet, 2H), and 9.73 (triplet, 1H) ppm. The 13C-NMR spectrum shows signals at 21.1, 50.2, 128.7,...
Please help me annotate the following spectra. "roblem 4 3396 3334 IR Spectrum 1662 4000 3000...
Please help me annotate the
following spectra.
"roblem 4 3396 3334 IR Spectrum 1662 4000 3000 1200 800 2000 v (cm 1600 ) 120 Mass Spectrum Provide the structure for the problem in the space provided % of base peak M+ 135 Cg H, NO 40 80 120 160 m/e 200 240 280 Students are to ignore marked solvents and water in NMR spectra. 13C NMR Spectrum (100 Mz, DMSO-d6 solution) DEPT CHA CHA CHA solvent proton decoupled 200 160...
Draw the structure of the compound C6H4Br2 that might exhibit the 13C-NMR spectrum below. Impurity peaks...
Draw the structure of the compound
C6H4Br2 that
might exhibit the 13C-NMR spectrum below. Impurity peaks
are omitted from the peak list. The triplet at 77 ppm is
CDCl3.
Draw the structure of the compound CGH_Br2 that might exhibit the 13 C-NMR spectrum below. Impurity peaks are omitted from the peak list. The triplet at 77 ppm is CDC12. Flash Installation and Troubleshooting Used with permission from Aldrich Chemical Co., Inc. Solvent CDC13 Shift 134.1 131.0 130.1 122.9 Chemical shift:...
Formula: C3H7Br Mass Spectrum % of base peak M+ 122/124 IR Spectrum (liquid film) 40 80 200 240 280 120 160 m/e 4000 3000 1200 800 2000 V (cm 1600 ) TT 13C NMR Spectrum (50.0 MHz, CDCI, solution) solvent 200 160 120 80 40 0 S (ppm) 1H NMR Spectrum (200 MHz, CDCI, solution) 6H, d expansions 4.6 ' 4.0 ppm 2: 0 1 4 ppm 1H, m _ TMS 10 9 8 7 6 5 4 3 2...
16. Propose a structure for a molecule of formula CaHsCl which gave the following 1H NMR spectrum. PPM 17. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 148, an IR peak at 1680 cm'and gives the following H and 13C NMR spectra 3H зн 2H 2H 2H 3 5 2 7 6 4 PPM 160 140 180 60 220 200 20 0 120 100 80 40 PPM -
The m/z of the M+ peak of an unknown is 146, and this peak is the base peak (i.e., the tallest peak). (See below mass spectrum of the unknown.) Combustion analysis data indicate 49.03% carbon and 2.74% hydrogen. The IR spectrum and 13C-NMR spectrum of this compound also were obtained and are shown below. Given this information, what is the name of this unknown molecule? MASS SPECTRUM 100 80 60 面 40 20 0.0 120 160 40 80 0.0 m/z...
The low-resolution mass spectrum of an unknown monosubstituted benzene showed a molecular ion (M+) peak at m/z 150. Combustion analysis of a sample of this compound indicated that the compound contained C, H, and O only and had an empirical formula of C3H1002. The IR spectrum of the unknown compound is shown below. The 'H NMR spectrum of the unknown compound did not show a peak in the 9.10 ppm range. D 4000 9000 2000 1500 1000 RAVENUGERII What is...
The NMR spectrum suggests the formation of the
meta-substituted product, but NH2 is an ortho/para directing group.
Using the given chemicals, provide a mechanism to arrive at the
meta-substituted product.
5. Adam Splidda and Flo Wrene were asked to make 4-aminobenzenesulfonic acid. They came up with the plan below. The Plan: NH2 SO3 NH2 H2SO4 HO3S 4-aminobenzenesulfonic acid The product: S, 1H t, 1H s, 2H d d, 1H 1H s, 1H 0 4 PPM Were they successful? Draw the...
Molecule C:
Molecule D:
Can someone PLEASE EXPLAIN the answers??????
2. Below are the 'H and 13C NMR spectra for four isomers of C&H:02. Provide the structure that produced each set of spectra. Molecule A: 'H NMR 3H 3H no coupling, so no adjacent carbons with hydrogen atoms 2H 5 3 2 0 PPM 13C NMR aldehyde or ketone no aldehyde in 1H NMR, SO ketone 220 200 180 160 140 120 100 PPM 80 60 40 20 0 Molecule...
Please help me annotate the
following spectra.
"roblem 4 3396 3334 IR Spectrum 1662 4000 3000 1200 800 2000 v (cm 1600 ) 120 Mass Spectrum Provide the structure for the problem in the space provided % of base peak M+ 135 Cg H, NO 40 80 120 160 m/e 200 240 280 Students are to ignore marked solvents and water in NMR spectra. 13C NMR Spectrum (100 Mz, DMSO-d6 solution) DEPT CHA CHA CHA solvent proton decoupled 200 160...
Draw the structure of the compound
C6H4Br2 that
might exhibit the 13C-NMR spectrum below. Impurity peaks
are omitted from the peak list. The triplet at 77 ppm is
CDCl3.
Draw the structure of the compound CGH_Br2 that might exhibit the 13 C-NMR spectrum below. Impurity peaks are omitted from the peak list. The triplet at 77 ppm is CDC12. Flash Installation and Troubleshooting Used with permission from Aldrich Chemical Co., Inc. Solvent CDC13 Shift 134.1 131.0 130.1 122.9 Chemical shift:...
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