Transmitance 0.2 10 0.1 0.3 0.5 0.8 0.7 0.6 0.9 0.0 3500 500 3000 2500 2000 Wavenumbers (cm-1) ту 1500 1000 500 Infrared Spectroscopy (IR) is very useful for determining the functional groups present in an organic molecule. For each of the spectra below, complete the following: • Build the molecule in Spartan and describe the motion of the molecule at each key absorption frequency • Identify key absorption frequencies in the spectrum and identify the type of stretch/bend/wag/etc. (i.e. O-H) • Match the spectra from the provided structures • Identify the main functional groups in the molecule OH A OH H B E F H N NH2

Transmitance 0.2 10 0.1 0.3 0.5 0.8 0.7 0.6 0.9 0.0 3500 500 3000 2500 2000 Wavenumbers (cm-1) ту 1500 1000 500 Infrared Spectroscopy (IR) is very useful for determining the functional groups present in an organic molecule. For each of the spectra below, complete the following: • Build the molecule in Spartan and describe the motion of the molecule at each key absorption frequency • Identify key absorption frequencies in the spectrum and identify the type of stretch/bend/wag/etc. (i.e. O-H) • Match the spectra from the provided structures • Identify the main functional groups in the molecule OH A OH H B E F H N NH2

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....

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Infrared Spectroscopy (IR) is very useful for determining the functional groups present in an organic molecule. For each of the spectra below, complete the following: • Build the molecule in Spartan and describe the motion of the molecule at each key absorption frequency • Identify key absorption frequencies in the spectrum and identify the type of stretch/bend/wag/etc. (i.e. O-H) • Match the spectra from the provided structures • Identify the main functional groups in the molecule OH A B F D E H OH NH2 J
Identify key absorption frequencies in the spectrum and identify the type of stretch/bend/wag/etc. (i.e. O-H), Match the spectra from the provided structures with the info given by the IR photo, Identify the main functional groups in the molecule
Answer and explain in detail how you arrived at that answer.
5.) Determine and draw the structure corresponding to the spectral information provided below. Explain what clues you used to determine the structure.
See image below
For the structure and 1H NMR spectrum shown below, match the labeled hydrogen atom groups on the molecule (A-F) with the corresponding signals in the spectrum.
Counterfeit drugs are a common problem in developing regions of the world. Oftentimes, counterfeit pills are made with compounds such as lactose. A lab technician has obtained the IR spectrum shown above for a sample reported to be citalopram, an antidepressant drug. Does the IR spectrum belong to citalopram or lactose? Explain your answer by describing what feature of the IR spectrum confirms your choice and describe what feature is missing from the IR spectrum for the other compound. A. citalopram B. lactose
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Based on the spectra provided, draw the structure. Label each unique carbon and hydrogen with the letters A, B, C… for use in assigning NMR peaks. fill in the data table assigning peaks in each spectrum. You should assign: • All 1H NMR peaks • Significant IR peaks above 1600 cm Example of what the table should include (imagine the structure of ethanol is drawn with the CH3 hydrogens labeled as A, the CH2 hydrogens labeled as B, and the OH hydrogen labeled as C) : hydrogen proton chemical shift integration splitting pattern couples to.. A 1.2 3 triplet B B 3.7 2 quartet A C 2.6 1 singlet -