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200 180 160 140 120 100 60 40 20 0.8 0.6- 3000 2000 Wavenumber (cm-1) 1000 8- 8- 4. TRANSMITTANCE

200 180 160 140 120 100 60 40 20 0.8 0.6- 3000 2000 Wavenumber (cm-1) 1000 8- 8- 4. TRANSMITTANCE

Principles of Instrumental Analysis
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter9: Atomic Absorption And Atomic Fluorescence Spectrometry
Section: Chapter Questions
Problem 9.8QAP
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200 180 160 140 120 T00 20 60 40 20 0.8 0.6 0.4 0.2 3000 2000 Wavenumber (cm-l) 1000 TRANSMITTANCE
Transcribed Image Text:200 180 160 140 120 T00 20 60 40 20 0.8 0.6 0.4 0.2 3000 2000 Wavenumber (cm-l) 1000 TRANSMITTANCE
Insert Design Layout References Mailings Review View (0 a mass spectrum (El mode): the peak at m/z = 165 is the molecular ion, and the peak at 166 has an intensity of 10.2 (relative to M- 100) (i) a H-NMR spectrum (10% solution in CDCB, 90 MHz) with J values 6-9 Hz, & the integrations are 2:2:4(q + br. s):3 the broad singlet @ 4.1 ppm is exchanged on addition of D2O; (ii) a 13C-NMR spectrum (CDCb, 25 MHz) with 7 peaks, occurring at 167 (Co), 151 (Ca), 132 (CH), 120 (Ca), 113 (CH), 60 (CH2), & 14 (CH3), (iv) an IR spectrum. Analyse the spectra, and identify the compound making sure to show your logic. Make sure to show clearly how you obtain the molecular formula, and you should briefly explain the observed fragmentation pattern in the MS. You should also assign as many peaks as possible in the NMR spectra, and the principal peaks that you are able to assign in the IR. 100 80 60 40 20 0.0 0.0 40 80 120 160 200 m/z words English relandi Rel. Abundance
Transcribed Image Text:Insert Design Layout References Mailings Review View (0 a mass spectrum (El mode): the peak at m/z = 165 is the molecular ion, and the peak at 166 has an intensity of 10.2 (relative to M- 100) (i) a H-NMR spectrum (10% solution in CDCB, 90 MHz) with J values 6-9 Hz, & the integrations are 2:2:4(q + br. s):3 the broad singlet @ 4.1 ppm is exchanged on addition of D2O; (ii) a 13C-NMR spectrum (CDCb, 25 MHz) with 7 peaks, occurring at 167 (Co), 151 (Ca), 132 (CH), 120 (Ca), 113 (CH), 60 (CH2), & 14 (CH3), (iv) an IR spectrum. Analyse the spectra, and identify the compound making sure to show your logic. Make sure to show clearly how you obtain the molecular formula, and you should briefly explain the observed fragmentation pattern in the MS. You should also assign as many peaks as possible in the NMR spectra, and the principal peaks that you are able to assign in the IR. 100 80 60 40 20 0.0 0.0 40 80 120 160 200 m/z words English relandi Rel. Abundance
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