Match the following compounds with the IR spectra shown. Justify your choices by assigning all of the peaks characteristic of the functional groups present. 3. A. В. OH OH HO, Cinnamic acid Hydrocinnamic acid 3-phenyl-1-propanol
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- The 1H-NMR spectrum in the figure is of a compound dissolved in deuterated water. To which of the following? (1). HCOO—CH2–CH2–CH3 (2). H3C-COO-CH2-CH3 (3). H3C-CH(CH3)-COOH (4). It cannot be any of the above. Singlete Integral: 2,98 Cuadruplete Integral: 2,05 Triplete Integral: 3,08 ppm03) Below are presented two 1H NMR spectra. Among the compounds pentan-3-ol, pentan2-ol, pent-3-amine, pent-2-amine, pentan-2-one, which one corresponds to spectrum A and which one to B? Justify based on chemical shifts and multiplicity of spectra signals30. The following spectrum is representative which of the following types of compounds? 100 ww 40- 20- 1000 3000 2000 1500 Wavenumber tom a. carboxylic acid b. aldehyde c. nitrile d. alcohol e. halide f. Data presented does not provide enough information. 80- 60- 500
- Determine whether each of the IR spectra given is consistent with the structure of an 50 A.Alcohol B. ketone C.Aldehyde D.carboxylic acid E. primary amine, F.secondary amine. D 4000 3000 2008 HAVENUMERI 1500 1000 تسلام $30Determine the identity of the solid organic compound in NMR spectra. Include which protons cause the peaks in the H1 NMR and which carbons cause the peaks in C13 NMR. The list of all the possible organic compounds are as follows: Cumene, 3-Methy-2-butanone, Phenethyl alcohol, Isopropyl Acetate, Ethel benzoate, 3-phenylpropionaldehyde, isobutyl cinnamate, cyclamen aldehyde, Styrallyl acetate, Butyl butyrate, propiophenon, phenylacetylene, Cis-Hexenyl-3-Acetate, Benzyl propionate, 3-(p-ethyl-phenyl)-2,2-dimethyl propionaldehyde, 2-methoxy-4-ethyl-phenol, P-ethylphenol, diphenyl amine, 4-phenyl-3-buten-2-one, Diethyl Terphthalate, glutaric acid, cinnamic acid, P- ethylbenzoic acid, Coumarin, vanillin, (2,2,2-trichloro-1-phenylethyl)acetate, 4-(p-hydroxyphenyl)-2-butanone, 2-ethoxy-5-prop-1-enylphenol, t-butyl-phenol, Thymol, Calone, Syringol, Syringaldehyde. Borderline MP unknowns: Styrallyl alcohol, 1,1-dimethyl-2-phenethyl acetate, 1,1-dimethyl-2-phenyl ethanol. Note: Mass of solid…2. List obvious spectral characteristics from IR and ¹H NMR for the following functional groups. Consider IR peak location and shape and NMR chemical shift. IR signal location and shape NMR chemical shift FG Alcohol Ketone (particularly CH3CO-) Aldehyde Carboxylic Acid Benzene CH=CH
- 1. What is the number of signals that should be observed in the ¹H NMR spectra of each of these molecules? a. b. C. OH H₂N Text Text8 of 15 || | 140 80 PPM 60 40 120 100 Which of the following structures matches the 13C-NMR spectum provided above? CH3 O=C B) C) D) A) H3C- CH2 HC H. C' H. H. C. C H3C H. H-Cċ. H. H. H. CH3 OA B. CIC CH 20 21.3Which of the following band(s) would be found in the spectra for one of these compounds, but not the other? [Note: more than one answer may or may not be correct.] benzenecarboxylic acid versus benzyl 1-phenylbutanoate a. -3300 cm 1 b. -2930-2830 cm1 (multiple) C. -2820 and 2720 cm1 d. -1700 cm1 e. -1600 cm 1 f. -1450 cm1 g. -1250 cm 1 h. -1050 cm1
- Describe the signals observed in the 'H NMR spectrum of chloroethane (ethyl. chloride). You may ignore splitting. A) A single peak B) Two peaks with relative intensities of 4 and 3. C) Two peaks with relative intensities of 3 and 2 D) Two peaks of equal intensity E) None of theseThe picture shows the structure of Se analog of an Sg-ring structure, and the atoms are also numbered. Using the information, determine the number of signals in "Se (where I = ½,7.6%) NMR spectrum of the compounds considering the substitution of Se in indicated S positions. 8 Se substitutions in Position 1 and Position 3. b. Se substitutions in Position 1, Position 2, and Position 4. Se substitutions in Position 1 and Position 2. а. с.13C NMR is a technique in which the total number of signals represents the number of unique carbon atoms in a molecule. Propose a structure that is consistent with the following data. a. The IR includes peaks at 1603 and 1495 cm-1. b. The 13C NMR has a total of 7 signals. c. The compound has one acidic proton.