Find information on: 1. DDT 2. EDTA 3. orotic acid 4. сarboplatin 2. Propose the approximate shift/splitting pattern/etc. for each type of hydrogen that would be seen in an 'H-NMR spectrum Identify the # of each type of each carbon (i.e. how many peaks in the 13C spectra) 3. Identify infrared (IR) active bonds within each molecule 4.

Find information on: 1. DDT 2. EDTA 3. orotic acid 4. сarboplatin 2. Propose the approximate shift/splitting pattern/etc. for each type of hydrogen that would be seen in an 'H-NMR spectrum Identify the # of each type of each carbon (i.e. how many peaks in the 13C spectra) 3. Identify infrared (IR) active bonds within each molecule 4.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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2. Determine the structures of the compounds that give rise to the following spectral data. Draw the structure, label the hydrogens and carbons, assign each peak in the ¹H and ¹³C NMR spectra, and identify major functional group stretches in the IR. a. C4H8O2 IR 25 26 27 28 29 3 ¹H NMR Offset: 2.0 ppm 3.5 N 3800 3600 3400 3200 3000 2800 2600 2400 2200 8 BRI 4.5 6 2000 Wavelength (um) 5 5.5 1800 1600 Wavenumber (cm) 1400 1200 3 1000 4 8 (ppm) Peak Summary: 9.8 (broad s, 1H), 2.35 (t, 2H), 1.68 (sextet, 2H), 0.99, (t, 3H) 13C NMR: 177, 38, 18, 13 2 1.5 PPM 800 13 14 15 16 0 600
5. Discuss peak splitting, and draw H(proton) NMR spectra for CH3CH2CH2F structure, label and explain splitting of each peak and the shielded and de-shielded peaks.
Connections to biology 5. Tyrosine is an important amino acid in Biochemistry. Assign the peaks in the ¹H-NMR to the hydrogens in the structure of tyrosine by placing a, b, c, and d in the appropriate corresponding boxes. The hydrogen atoms attached to O and N atoms do not need to be labeled on this spectrum. b 14 12 10 d HN C NH₂ histidine PPM OH
1. For following IR spectra: A. Identify the functional groups and bond types present in the molecule. B. Label peaks in the IR spectra below. Benzene LOD D. 3000 2000 1000 5po 4000 HAVENUMB ERI -l TRANSMITTANCEIXI
3. Which C7H₁40 isomers give rise to the spectra shown below? (Hint: the IR spectra of both molecules would contain a strong peak at ~1710 cm-¹.) a. C. 8 7 8 7 6 5 5 4 8 (ppm) 4 8 (ppm) Note: From left to right, the peak multiplicities are septet and doublet. 3 3 2 All singlets 2 1 0 0
7. Identify the structures for the following two isomers with molecular formula C10H12O2. There is an IR stretch at 1718 cm¹ for the compound in part a and 1740 cm¹ for the compound in part b. The 'H NMR spectra are shown below. a. b. 11 10 HSP-01-396 11 10 HSP-02-824 3 2 2 will 9 9 2 8 8 5 7 7 6 6 5 ppm 5 ppm 4 3 2 2 4 3 2 2 3 1 1 0 0
Choose the best explanation for why -OH and -NH peaks are often broad singlets in a ¹H NMR spectrum. A) The greater electronegativity difference in the N-H or O-H bond compared to a C-H bond makes the peak broader. B) The greater mass involved in the N-H or O-H bond compared to a C-H bond makes the peak broader. C) The hydrogen nuclei on the carbon next to the -OH or -NH are too far away to impact the multiplicity. D) Protons in OH or NH groups are acidic enough to rapidly exchange between different molecules, so the coupling to vicinal hydrogens is not clearly observed.
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
Examine the IR spectrum in Photo 1. Record the wavenumber for each relevant peak in Data Table 1. Record the bond represented by each relevant peak in Data Table 1. Identify the functional groups associated with each bond and record it in Data Table 1. Circle the structure(s) on Photo 2 that match the data recorded in Data Table 1.
1. What do you suppose is the molecular weight of the molecule that gives the mass spectrum below? 27 Hai 55 26 45 30 40 50 Rel Abund 100r 80- 60- 40- 20- 0- m/z0 10 Rel Abund = Relative Abundance Formula 1: 20 Formula 2: Formula 3: m/z = mass divided by charge 3. What is the base peak? 2. Provide three different molecular formulas (organic molecules, please) that are possible for a molecule with the molecular weight you have chosen. What are the degrees of unsaturation (SODAR) for each? Degrees of unsaturation: Degrees of unsaturation: Degrees of unsaturation: 60 4. Draw a possible molecule for each formula. based on Formula 1 5. Which structure do you think is correct? 72 70 based on Formula 2 80 What mass is lost from the molecular ion to get to the base peak? 90 100 based on Formula 3
ORGANIC CHEMISTRY PLEASE EXPLAIN, SEE PHOTO: Predict the structure for this unknown. Please provide relevant information regarding each peak and the rationale for how you came to identify each structure. Label any and all peaks. Show all work.
22. What apparent splitting pattern would not be found in the 'H NMR spectrum or the following molecule? Singlet Doublet Triplet Quartet Quintet a. d. b. e. C. REF: 16.10 OBJ: Determine a simple splitting pattern using the N+1 rule. 23. Which molecule has a triplet of doublets in its 'H NMR spectrum? II Al a. AI b. e. II c. III REF:16.12 OBJ: Determine the complex splitting patterns that result when nonequivalent protons split a signal.