:) Assign numbers (1, 2....) for each 1°C nucleus and comment on the types of peaks expected for the given compounds for (i) Normal 13C (H-decoupled) (ii) DEPT- 45° (iii) DEPT- 90°, and (iv) DEPT- 135º Just mention how many peaks will be obtained for each and what will be the nature of the peaks. Identify the diastereotopic3C, if any. CH3 a CH3 -CH,C H3 ČI

:) Assign numbers (1, 2....) for each 1°C nucleus and comment on the types of peaks expected for the given compounds for (i) Normal 13C (H-decoupled) (ii) DEPT- 45° (iii) DEPT- 90°, and (iv) DEPT- 135º Just mention how many peaks will be obtained for each and what will be the nature of the peaks. Identify the diastereotopic3C, if any. CH3 a CH3 -CH,C H3 ČI

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter14: Mass Spectrometry

Section: Chapter Questions

Problem 14.27P: Following is the mass spectrum of an unknown compound. The two highest peaks are at m/z 120 and 122....

See similar textbooks

Similar questions

Give an analysis/ interpretation of the graph. 1. Identify and interpret the main peak in the mass spectrum of cyclohexanol. 2. Draw the 1HNMR spectrum of 1-Methoxyhexane. Then answer the following questions in reference to your1H NMR spectrum of 1-Methoxyhexane. a. How many types of H(signals)? b. What types of H(chemical shift)? c. How many Hof each type are there(integration)? d. What are the connectivity(coupling patterns)?
(A.) Name the (non-alkane) functionalgroup in the following compound. see attatched photo for structure. (B.) Write at least two IR peaks (frequencyranges, in cm-1) you would expect to find for thecompound in question (A.).
Propose a structure for the HNMR data below and come up with a table that denotes the different protons to their respective integration, multiplicity and J values (ppm).
a) Predict the proton spectrum chemical shift, coupling and integration of the following molecule? vanillin C8H8O3 b) Also predict its cross-peaks in COSY and 1H-13C HETCOR?
6- Below are the figures of two infrared spectra (IR). One corresponds to the spectrum of the cyclohexane compound and the other corresponds to the cyclohexene. Identify each IV with its respective compound and indicate the frequencies and modes of vibration.
Following is the mass spectrum of an unknown compound. The two highest peaks are at m/z 120 and 122. Suggest a structure for this compound. (Data from http://webbook.nist.gov/chemistry/.)
Calculate the HDI of each FM and propose 2structures for two molecules that are isomers.Specify what the indicated absorption (s) shouldbe to.a.C7H15NO with strong absorptions in 3400, 3270and 1670, 1390, and 1370 cm-1b. C6H10O with absorptions in 2065 (m), 1685 (f),1650 (m) and 970 (f) cm-1c. C9H12O, with absorptions in 1600 and 1500 and1245 cm-1.
An organic compound having a halogen gives its mass spectrum peaks at m/z 138, 136, 123, 121, 57. The peaks at 138 and 136 are equiaxed and correspond to the molecular ion. The peaks at 123 and 121 are coeval. Identify the type of halogen and how peaks 123, 121, 57 result
Below is the 1 HNMR spectrum of a racemic mixture of 2R-3R-3-nitro-2-butanol. To identify the different multiplet types present, the coupling constants connected to each peak, and the connections between the protons, use splitting tree diagrams. You should emphasise which CH group pairs with each of the CH3 groupings in particular. Which protons bind to which atoms in the structure below?
C2H5ClO2 elucidate thefollowing spectrum and identify the unknown compound
The mass spectrum of n-octane shows a prominent molecular ion peak (m>z 114). There is also a large peak at m>z 57,but it is not the base peak. The mass spectrum of 3,4-dimethylhexane shows a smaller molecular ion, and the peak atmass 57 is the base peak. Explain these trends in abundance of the molecular ions and the ions at mass 57, and predict theintensities of the peaks at masses 57 and 114 in the spectrum of 2,2,3,3-tetramethylbutane.1
When 2-bromo-3,3-dimethylbutane is treated with K+ −OC(CH3)3, a single product T having molecular formula C6H12 is formed. When 3,3dimethylbutan-2-ol is treated with H2SO4, the major product U has the same molecular formula. Given the following 1H NMR data, what are the structures of T and U? Explain in detail the splitting patterns observed for the three split signals in T. 1H NMR of T: 1.01 (singlet, 9 H), 4.82 (doublet of doublets, 1 H, J = 10, 1.7 Hz), 4.93 (doublet of doublets, 1 H, J = 18, 1.7 Hz), and 5.83 (doublet of doublets, 1 H, J = 18, 10 Hz) ppm 1H NMR of U: 1.60 (singlet) ppm