Question

NMR

IR

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Experimental Data Only report the IR absorptions that provide diagnosis for the major functional groups. Copies of your spectra will be included in your lab report with this information written on the spectra. However, the information should also be included in the body of the report in a text format similar to the example given below IR cm1: 1735 (C-o); MS: m/z 150 (corresponding to molar mass) NMR Spectra Proton and carbon NMR should include the solvent used (iH NMR (CCl, 60 MHz) and the instrument frequency (60 MHz for our instrument). . NMR peak shifts should be rounded off to the nearest 0.1 ppm. In addition to chemical shifts, integral ratios are reported as well as coupling patterms (s: singlet; d: doublet; t: triplet; q: quartet; and m for multiplet). Use 'm' when a pattern is uninterpretable . Data can be reported in a table form as shown below. When using this method, draw a compound and . List all the signals in your NMR spectrum that are created by your compound in order of increasing , Build a similar table for the 13C NMR spectrum. (without the # of peaks column), text Pate label each hydrogen atom. Use this label to identify the H responsible for the NMR signal. chemical shift. Do not list signals created by the NMR solvent or by other impurities. How You intexpoe ted the spectsq Ple east explain CH3 CH3-c-o-c 12-c 12-CH-CH3 | Chemical shift (ppm) 0.9 # of peaks 2 Multiple # of H's assignment 0 He and Hod 2.0 4.0 Summary of data for identification of unknown nalysis 2a Imol olar mass from MS spectra nctional group present from IR spectra umber of non equivalent C from 3C R spectra pe of H from 'H NMR spectra Index of Hydrogen Molecular Deficlency Lewis Structures from previous data Formula (Unsaturation) rH3 H, C -C-CH3 HqCL O CL %T 60 2 242 ppm Unknown #7: This unknown contains 51.89% C and 9.82 % H by mass with the remainder being an unknown element (you have to figure out what element). 100 M+-92; M+2-94 (3:1 intensity) 80 60 10 15 20 25 30 35 40 45 50 55 6o 65 70 75 80 m/z 40 20 200 180 160 140 120 100 80 60 pm OH NH H NMR OH -NH 12 111 1019 8 ppm H-C-N H-C-S C-C-H -CH3 H-C-X H C-C-H н-с-с-с X F, Cl, Br (i.e. electronegative atom) Ht-Q Source U Calgary 13C NMR Chemical Shift 13C-NMR Type of Chemical Carbon Shift 6) RCH3 RCH2R 20-60 R CH RCH2 RCH2 Br 25-65 RCH2 C 35-80 R COH 40-0 R COR 40-80 Type of (arton Chemical Shift(6 10-40 C-R 110-160 0-40 160 180 RCNR2 165-180 RCCOH 165-185 RCH, RCR 180-215 RCOR RC CR 65-85 R2Cs0% 100-150 Source free share: slide share Approximate infrared absorption frequencies of various groups HCH Substitution patterns c-e, C- C cis Acid Anhydride -Acid chloride OH C-O Ester C-CI Amide Aldehydes and ketones NH NH amides -NH amines 3600 3400 3200 3000 2800 2600 2400 2200 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 cm-1 Wa

Answer 1

Please refer the attached images that will help you lot to understand how to deduce the structure and identify the spectra.
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