2. The mass spectrum of a hydrocarbon is shown below. Use the Rule of 13 to determine a molecular formula and use the formula to calculate units of unsaturation. Assume that the peak at m/z 120 is the molecular ion. What are possible structures for this compound? 100 80 60 40- 20 10 20 30 40 50 60 70 90 100 110 120 m/z Relative Intensity

2. The mass spectrum of a hydrocarbon is shown below. Use the Rule of 13 to determine a molecular formula and use the formula to calculate units of unsaturation. Assume that the peak at m/z 120 is the molecular ion. What are possible structures for this compound? 100 80 60 40- 20 10 20 30 40 50 60 70 90 100 110 120 m/z Relative Intensity

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter12: Structure Determination: Mass Spectrometry And Infrared Spectroscopy

Section12.SE: Something Extra

Problem 41AP: The mass spectrum (a) and the infrared spectrum (b) of an unknown hydrocarbon are shown. Propose as...

See similar textbooks

Similar questions

A researcher performed the reaction described in the diagram below: C6H14O2 + H2SO4 ( solvent) ------> C6H12O + H2O After isolating the formed product, the researcher obtained the following mass and infrared spectra: Based on the spectra listed, propose a structural formula for the obtained molecule.
Please fully annotate this IR spectrum in the picture below, no need to annotate the fingerprint region (400-1500 cm-1). Thank you so much!!
Interpret as many of the main peaks in the following spectra as you can – do this by providing the chemical formula of the species responsible for the peak in each case – you don’t need to outline specific fragmentation pathways, unless you want to! The structures of the chemicals are given to help you, as are a couple of the more obvious bond breakages. Need new solutions. Draw chemdraw computerised
A sample of a liquid from an unlabeled bottle was subjected to analysis: MS showed that M+ has m/z of 89 and IR displayed bands at 2995-2840 cm-1, 1562 cm^-1, and 1425 cm^-1. Identify the functional group in the molecule and provide two possible structures.
For each set of spectral data below, draw the skeletal structure of the molecule that is consistent with the data. a. C5H12OMajor IR peaks: 3000 -2850 cm-11H NMR: 1.10 ppm (doublet); 3.60 ppm (septet), 3.8 ppm (quartet), 1.05 ppm (triplet) b. C3H6Br2Major IR peaks: 3000 -2850 cm-11H NMR: 2.4 ppm (quintet) and 3.5 ppm (triplet)
I am talking about this one on the ir spectroscopy we have carbon carbon double bond on benzen the three double bond so if we have that cant we say we have to csp2-H on the graph around 3100cm-1 thank u
Analyze the IR for the molecular formula C8H8O3 (vanillin). List only the relevant absorbancies (it is not necessary to list anything in the fingerprint region), descriptions (s, m, w, br), and assignments (O-H, alkane C-H, etc.).
The spectrum below was obtained from KBr sharing, being a compound with formula C2H6O. Determine the compound from the if FTIR spectrum. (b) Discuss how FTIR distinguishes the following compounds: (i) CH3OH and CH3CH2OCH2CH3 (c) which functional groups provide signals in the FTIR spectra: (i) 1700cm-1, (ii) 1550 cm-1 and (iii) 1700 cm-1 and 2510-3000 cm-1
The discussion this week explores the reasons why the resonance frequency for carbonyl groups covers a large range from 1600 - 1820 cm-1 (learning objective 3). Supply three factors that influence the carbonyl stretching frequency. Discuss in which way these factors contribute to the shift.
Identify all of the peaks in the spectrum. State the Experimental wavelength, Literature wavelength, peak characteristic, and assignment. DOWN BELOW IS AN EXAMPLE... Experimental Wavelength (cm-1) Literature wavelength (cm-1) Peak characteristic assignment 3001cm-1, 3043cm-1 3010cm-1 sp2 C-H stretching alkene 2924cm-1 2900 -2980cm-1 sp3 C-H stretching Alkyl C-H 1614cm-1 1500 -1650cm-1 C=C stretch alkene 1443cm-1 1350-1450cm-1 C-H bend C-H
Do the following steps for the unknown C3H7Br Determine the Saturation Index Identify IR and NMR bands Determine and draw the stucture of the unknown
analyse the spectra and write the name of the compound . also write brief explanation for each specta verifyng the parts of your suggested molecule. (for IR indicate the functional groups which matches the peaks , for mass indicate the fragments for CNMR and HNMR indicate which peak belongs to what )