Molecular structure of the IR spectrum 13C NMR Spectrum(50.0 MHz, CDCI, solution)3500-2500IR Spectrum(liquid film)1715proton decoupledsolvent20001600V (cm')4000300012008002001601208040O (ppm)H NMR Spectrum(200 MHz. COCI, solution)Mass Spectrum457457C3H,O24080120 1602002402801211TMSm/eNo significant UV8 76.43.18 (ppm)10absorption above 220 nm% of base peak

The elemental analysis and the molecular weight determination provides the chemical formula of the…

13C NMR Spectrum (50.0 M. CDCI, solution) 3500-2500 IR Spectrum (liquid fim) 1715 polvent proton decoupled 4000 2000 1600 V (cm") 3000 1200 800 200 160 120 80 40 O 8 (ppm) Mass Spectrum H NMR Spectrum (200 MHE COCI, solution) 45 M* 74 C3HgO2 40 80 120 160 200 240 280 12 11 TMS m/e No significant UV absorption above 220 nm 10 9 8. 7 6 5 4 1 8 (ppm) % of base peak

13C NMR Spectrum (50.0 M. CDCI, solution) 3500-2500 IR Spectrum (liquid fim) 1715 polvent proton decoupled 4000 2000 1600 V (cm") 3000 1200 800 200 160 120 80 40 O 8 (ppm) Mass Spectrum H NMR Spectrum (200 MHE COCI, solution) 45 M* 74 C3HgO2 40 80 120 160 200 240 280 12 11 TMS m/e No significant UV absorption above 220 nm 10 9 8. 7 6 5 4 1 8 (ppm) % of base peak

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 9CTQ

See similar textbooks

Similar questions

4000 IR Spectrum quid film) 100 80 60 40 YI 2248 41 10 3000 43 40 proton decoupled "C NMR Spectrum (150 MHz CDC, solution) 68 DEPT CH, CH, 1 CHT 9 200 ¹H NMR Spectrum (600 MHz, CDC, solution) M83 (<1%) 80 120 2000 v (cm) 8 m/e 160 160 2.3 L 7 1600 2.2 200 ryper 1200 6 ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 120 Mass Spectrum 240 21 2.0 expansions (not to scale) 800 I CsH₂N 280 5 expansion 80 4 270 255 256 255 expansion No significant UV absorption above 220 nm 27.0 245 250 255 1.0 3 40 L 2 0 8 (ppm) 1 1 TMS L 1 0 8 (ppm) 10 ¹H-¹C me-HSQC Spectrum (600 MHz, CDC, solution) Black cross-peaks CH and CH Red cross-peaks CH₂ ppm 20 ¹H-"C HMBC Spectrum (600 MHz, CDC), solution) -22 -24 -26 -28 116 118 120 122 124 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 ppm ppm 20 22 -24 26 28 -116 118 -120 122 -124 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 ppm IR: List bands and possible/probable structural units responsible Band (cm³) Possible…
4000 100 80 60 20 % of base peak 3376 40 10 3000 59 13C NMR Spectrum (50.0 MHz, CDCI, solution) 173 proton decoupled 200 I 9 80 ¹H NMR Spectrum (200 MHz, CDCI, solution) DEPT CH₂ CH₂ CH4 IR Spectrum (liquid film) 2000 M+88 (<1%) 120 1600 v (cm¹) m/e 160 160 I I 8 7 mmm 1 120 200 240 6 1200 . Mass Spectrum L 800 1 5 C5H₁20 280 solvent L 80 4 problem 78 3 No significant UV absorption above 220 nm 40 Il 08 (ppm) 1 2 1 TMS 0 8 (ppm)
Myriam 1718 1. 4000 3000 1600 1200 800 V (cm¹) 100 Mass Spectrum 43 119 80 60 JIK M+* 40 176 20 161 C12 H16 O 40 80 200 280 120 160 m/e 13C NMR Spectrum (50.0 MHz, CDCI, solution) expansion 188 IR Spectrum (liquid film) % of base peak DEPT CH₂ CH₂ CH proton decoupled L 200 ¹H NMR Spectrum (200 MHz, CDCI, solution) J 1 9 10 I 8 2000 160 the 1 7 6 240 120 130 130 125 ppm 125 ppm L 5 expansion 1 80 1 4 solvent Problem 99 UV Spectrum max 262 nm (log₁0 € 2.5) solvent methanol 40 t I 3 1 2 4 08 (ppm) TMS 1 0 8 (ppm) 1 1 205
опанит 1715 1600 IR Spectrum 100 4000 (liquid film) 43 80 75 60 M 40 20 % of base peak 10 3000 40 C 13C NMR Spectrum (20.0 MHz, CDCI solution) proton decoupled 9 80 200 ¹H NMR Spectrum (100 MHz, CDCI, solution) 101 8 2000 v (cm¹) M** 132 120 160 m/e 160 7 6 1200 120 Mass Spectrum 200 240 280 800 C-H 5 C6H1203 solvent L 80 4 -CH3 No significant UV absorption above 220 nm 3 H-C-H u -CH3 40 2 59 TMS 0 1 8 (ppm) TMS 0 8 (ppm)
Resolves into 13C NMR Spectrum (50.0 MHz, CDCI, solution) two signals at higher field DEPT CgH11Br Resolves into two signals at higher field expansions proton decoupled solvent 35.0 34.0 ppm 200 160 120 80 40 O 8 (ppm) 1H NMR Spectrum (200 MHz, CDCI, solution) expansion 3.0 2.5 ppm TMS 10 9 8 7 6 5 4 3 2 1 8 (ppm) Determine the structure of the compound based on the above information
7.) From the following sets of data, please propose a reasonable structure for the unknown organic compound. This molecule is entirely composed of C, H, and N only. Please show all of your work and feel free to write on the spectra any clues as to the structure. 4000 3000 2000 1000 S DO Infrared spectrum of unknown. KBr salt plate sample. 100 MS-NU-6396 80 60 40 20 - 10 20 30 40 50 60 70 80 90 100 110 m/z Mass spectrum of unknown. Molecular ion = 83.1 Relative Intensity
4000 100 80 60 IR Spectrum (liquid film) 40 20 $ 2 2960 3000 41 77 79 40 13C NMR Spectrum (50.0 MHz. CDCI, solution) proton decoupled 200 ¹H NMR Spectrum (200 MHz, CDCI, solution) T 40 10 9 80 2000 107/109 1 8 120 v (cm¹) m/e 1600 M** 156/158/160 160 160 3.5 1200 120 200 240 766 800 Mass Spectrum expansions ppm 2.5 1 7 6 5 650 C3H6Br Cl 280 T 2.0 ppm solvent 80 4 H-C-H Problem 18 No significant UV absorption above 220 nm H-C-H 1 3 40 H-C-H 0 1 2 1 124 8 (ppm) TMS 0 8 (ppm) 107
43 184 IR Spectrum (Iquid film) 4000 3000 100 80 60 40 20 40 13C NMR Spectrum (100.0 MHz, CDCI, solution) 9 80 DEPT CH₂ CH₂4 CHA proton decoupled 200 ¹H NMR Spectrum (400 MHz CDCI, solution) expansion 7.5 7.3 ppm 8 P 10 SAMSUNG Galaxy A53 5G 2000 1600 V (cm) 105 M+- 134 120 160 m/e 160 09b0f2ca-eac1-4... 1200 T L 120 2.8 2.7 ppm 7 6 ww 800 Mass Spectrum C10H14 200 240 280 T 1 5 solvent " 80 expansions 1.8 1.7 ppm 1 4 3:54 م 0 *1 470 صفحة Problem 96 UV Spectrum max 260 nm (log10=2.5) PE 40 1.45 1.35 ppm 3 2 Problem 97 08 (ppm) expansion 1.05 0.95 TMS I 0 8 (ppm) 1 202 تمشح بـ 100 جيجابايت تخزين على OneDrive cloud لمدة 6 أشهر 185.
13C NMR Analysis of Aspirin Chemical Shift (Observed ppm) Assignment(s) (A'-J') Expected Chemical Shift Range (ppm) B' D' E' JOH Acetylsalicylic Acid (Aspirin) 169 & 170 152 125 135 (4 peaks) - 122 20 160 140 120 100 Figure 14.13 125.7-MHz 13C-NMR spectrum of aspirin in CDCl3. solvent 80 60 40 20 ppm
Interpret the NMR spectrum 11 1 10 51 9 8 00 4 7 6 5 ppm 4 C,H,O,N M. Wt = 139 3 N 1 0
3000 15MHz carbon-13 NMR spectrum CDCi, solution off-resonance decoupled proton decoupled 200 In spectrum (nujol mull) 135 28 2000 100MHz proton NMR spectrum CDCi, solution 1600 V (cm-1) wayang 147 40 60 80 100 120 140 160 180 200 220 240 260 260 300 320 340 m/e 10% expansion at 130ppm 1670 mt 150. 2H 1200 800 mass spectrum 209 3H 124 180 160 140 120 100 80 60 40 UV spectrum a 14.999mg/10ml hexane 0.150mg/10ml hexane 1cm b 0.5cm cells 250 300 200 problem 3H 2 (nm) 20 0 350 6 (ppm) 8 (ppm)
IR Spectrum (liquid film) 4000 100 80 60 40 20 3000 40 13C NMR Spectrum (50.0 MHz, CDCI, solution) 10 الليسا 80 proton decoupled ¹H NMR Spectrum DEPT CH₂ CH₂ CH 200 9 (200 MHz, CDCI, solution) 101 expansion 4.0 2000 8 1736 v (cm¹) 129 1600 solvent 160 120 80 40 11 2.0 ppm 120 160 200 m/e M+ 174 7 1200 1 6 800 Mass Spectrum C8H1404 240 280 5 4 No significant UV absorption above 220 nm 3 2 0 8 (ppm) 1 TMS 1 0 8 (ppm)