Find information on:1. DDT2. EDTA3. orotic acid4. сarboplatin2.Propose the approximate shift/splitting pattern/etc. for each type of hydrogen thatwould be seen in an 'H-NMR spectrumIdentify the # of each type of each carbon (i.e. how many peaks in the 13Cspectra)3.Identify infrared (IR) active bonds within each molecule4.

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Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 5E

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A STK2083_Molecular_Spectroscopy_Group Assignment.pdf - Adobe Acrobat Reader DC File Edit View Sign Window Help Home Tools STK2083_Molecular. x Sign In 1 /1 119% a. Which of the compounds below best matches the following 'H NMR spectrum? Integration values are indicated next to their corresponding signal. 2. Search 'Signature' Convert PDF но Edit PDF A B Comment OH HO Combine Files D E EI Organize Pages 24 16 2 Redact A Compress PDF 16 U Protect 8 D Fill & Sign Create, edit and sign PDF forms & agreements PPM b. Briefly explain your answer 2 (a) based on number of signals, position of signals and the integration of the signals. Start Free Trial
Answer the following questions: a. What is the relationship between chemical shift in ppm and operating frequency? b. What is the relationship between chemical shift in hertz and operating frequency? c. What is the relationship between coupling constant in hertz and operating frequency? d. How does the operating frequency in NMR spectroscopy compare with the operating frequency in IR and UV/Vis spectroscopy?
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 Text
(All spectra are from the AIST database) 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. Pentane CSH12 LOD 4000 3000 200 1500 1000 500 HAVENUMBERI -|l TRANSMITTANCEII
An H-NMR spectrum provides information about the integrated areas under the peak which consequently give a. the number of H environment b. the coupling constant c. ratios of various kinds of H d. position of the peak of each H
6.a. Given the ¹H NMR spectrum provided, give the structure of the molecule. The molecular formula is C6H3N306. Hint: this is a symmetric molecule. 6.b. Explain why the singlet peak (the only peak in the spectrum) is significantly downfield shifted. Where would it normally be? Also explain why there is just a singlet. 9 3H 8 7 Chemical Shift (ppm)
4. For each example below, draw at least onc possīble isomer that is consistent with the molecular formula and the associated IR spectrum. Page 3 a. MW 82, CaH1O be 48 20 1000 b. MW 116, Coll2O2 4000 2540 SL LOB2 9262 2042
6. In ¹³C NMR spectroscopy, the signal due to which type of the following carbons would occur furthest downfield? Explain your answer below. A. -CEC C. A. -CEN Ya B. C. 7. In ¹C NMR spectroscopy, the signal due to which type of the following carbons would occur furthest upfield? Explain your answer below. *-*-* D. C=0 ܘܚܗ ܂ B. X D.
The 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.
30. 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
The IR spectra for acetaminophen and phenacetin are shown below. a. Identify which spectrum is for acetaminophen and which is for phenacetin. b. Label the key bond/functional group signals on each spectrum. (e.g. N-H, C=O, O-H, C=C, C(sp3-H, C(sp³)–H) OH fou acetaminophen phenacetin 100.0 90 80 70 60 50 40 30 20 10 0.0 40000 3000 2000 1500 1000 4000 čm-1 LOD 4000 3000 2000 1500 1000 500 3305.35- 6891 1228.63- 117185 107.83-
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.

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