Can you help me solve THE STRUCTURE. which peaks are important? final structure should have the peaks labelled (i.e. which NMR peak represents each hydrogen on your compound).PLEASE help. NMR+Unknown+%282%29C: 58.80%, H: 9.87%, O: 31.33%100D400010Relative Intensity100-806040-209HPM-00-297MS-NU-00100-mm10300082030740200665060m/zNAVENUMBERI5ppm150070480390mp10003H, s 1H, septet 6H, d100210são

IR helps us to find the functional group present in the organic molecule. Mass spectra show the mass…

NMR+Unknown+%282%29 C: 58.80%, H: 9.87%, O: 31.33% 100 4000 10 MS-NU-0010 60 C 40 100- Relative Intensity 80 20- 9 HPM-00-297 0 10 3000 20 30 8 7 40 2000 6 50 60 m/z NAVENUMBERI 5 ppm 1500 70 4 80 90 1000 100 3H, s 1H, septet 6H, d T T 3 2 1 T 0 500

NMR+Unknown+%282%29 C: 58.80%, H: 9.87%, O: 31.33% 100 4000 10 MS-NU-0010 60 C 40 100- Relative Intensity 80 20- 9 HPM-00-297 0 10 3000 20 30 8 7 40 2000 6 50 60 m/z NAVENUMBERI 5 ppm 1500 70 4 80 90 1000 100 3H, s 1H, septet 6H, d T T 3 2 1 T 0 500

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

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Concept explainers

NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.

Question

100%

Can you help me solve THE STRUCTURE. which peaks are important? final structure should have the peaks labelled (i.e. which NMR peak represents each hydrogen on your compound).

PLEASE help.

NMR+Unknown+%282%29
C: 58.80%, H: 9.87%, O: 31.33%
100
D
4000
10
Relative Intensity
100-
80
60
40-
20
9
HPM-00-297
MS-NU-0010
0-mm
10
3000
8
20
30
7
40
2006
6
50
60
m/z
NAVENUMBERI
5
ppm
1500
70
4
80
3
90
mp
1000
3H, s 1H, septet 6H, d
100
2
1
0
são

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The NMR spectra for compound 1 were acquired in a 7.5 mg / 0.6 mL solution ofCDCl3 The 1H and 13C peaks are also listedbelow. Provide a full analysis of the NMR spectra for compound 1.1H NMR (400 MHz, CDCl3) δ 7.73 (d, J = 9.5 Hz, 1H), 7.56 (ddd, J = 8.5, 7.5, 1.6 Hz, 1H),7.51 (dd, J = 7.5, 1.6 Hz, 1H), 7.36 (d, J = 8.5 Hz, 1H), 7.30 (dd, J = 8.5, 7.5 Hz, 1H), 6.45(d, J = 9.5 Hz, 1H).13C NMR (101 MHz, CDCl3) δ 160.79, 154.09, 143.43, 131.85, 127.87, 124.44, 118.86,116.94, 116.74.
The NMR spectra for compound 1 were acquired in a 7.5 mg / 0.6 mL solution ofCDCl3 and are found in the accompanying file. The 1H are also listedbelow. Identify the name of compound 1 and Provide a full analysis of the NMR spectra for compound 1 with table showing peak name and assignment 1H NMR (400 MHz, CDCl3) δ 7.73 (d, J = 9.5 Hz, 1H), 7.56 (ddd, J = 8.5, 7.5, 1.6 Hz, 1H),7.51 (dd, J = 7.5, 1.6 Hz, 1H), 7.36 (d, J = 8.5 Hz, 1H), 7.30 (dd, J = 8.5, 7.5 Hz, 1H), 6.45(d, J = 9.5 Hz, 1H).
The NMR spectra for compound 1 were acquired in a 10 mg / 0.6 mL solution of CDCl3. The 1H and 13C peaks are also listed below.Provide a full analysis of the NMR spectra for compound 1.1H NMR (400 MHz, CDCl3) δ 5.94 (dd, J = 17.3, 10.8 Hz, 1H), 5.24 (dd, J = 17.4, 1.2 Hz,1H), 5.14 (tt, J = 7.1, 1.5 Hz, 1H), 5.08 (dd, J = 10.8, 1.3 Hz, 1H), 2.05 (p, J = 7.3 Hz, 2H),1.70 (s, 3H), 1.63 (s, 3H), 1.60 – 1.57 (m, 2H), 1.30 (s, 3H).13C NMR (100 MHz, CDCl3) δ 145.05, 131.98, 124.32, 111.69, 73.49, 42.06, 27.89, 25.71,22.81, 17.70.Note: from the data given, the two terminal methyl groups are impossible to differentia
1. For each set of spectral data, propose an acceptable structure that is consistent with the data. a. MS: M+ m/z=71, IR: 3340, 2960, 2870 cm-1 , 13C NMR: 47.20 (CH2), 25.64 (CH2) ppm b. MS: M+ m/z= 102, IR: 2960, 2870 cm-1, 13C NMR: 72.73 (t), 23.20 (t), 10.80 (q) ppm c. MS: M+ m/z=74, IR: 3310, 2960, 2870 cm^-1, 13C NMR: 62.44 (down), 34.86 (down), 18.98 (down), 13.88 (up) ppm (DEPT-direction) d. MS: M+ m/z=92 (M:M+2=3:1), IR: 2960, 2870 cm^-1, 13C NMR: 67.29 (C), 34.46 (CH3) ppm e. MS:M+ m/z=70, IR: 3070, 2960, 2870, 1666 cm^-1, 13C NMR: 138.92 (t), 114.26 (d), 35.96 (t), 22.17 (t), 13.59 (q) ppm f. MS: M+ m/z= 72, IR: 2960, 2870 cm^-1, 13C NMR: 31.68 (t), 29.80 (d), 22.20 (q), 11.69 (q) ppm g. MS: M+ m/z= 84, IR: 2960, 2870, 1734 cm^-1, 13C NMR: 220.16 (C), 38.30 (CH2), 23.24 (CH2) ppm h. MS:M+ m/z= 138, (M:M+2=1:1), IR: ~3010(broad), 1715 cm^-1, 13C NMR: 173.61(s), 25.21(t) ppm i. MS:M+ m/z=88, IR: 2960, 2870, 1736cm^-1, 13C NMR: 170.95 (C), 60.34 (CH2), 20.98 (CH3), 14.23 (CH3)…
For each set of spectral data, propose an acceptable structure that is consistent with the data 1.. MS: M+ m/z=92 (M:M+2=3:1), IR: 2960, 2870 cm^-1, 13C NMR: 67.29 (C), 34.46 (CH3) ppm 2.. MS:M+ m/z=70, IR: 3070, 2960, 2870, 1666 cm^-1, 13C NMR: 138.92 (t), 114.26 (d), 35.96 (t), 22.17 (t), 13.59 (q) ppm 3.. MS: M+ m/z= 72, IR: 2960, 2870 cm^-1, 13C NMR: 31.68 (t), 29.80 (d), 22.20 (q), 11.69 (q) ppm
The NMR spectra for compound 1 were acquired in a 7.5 mg / 0.6 mL solution ofCDCl3 The 1H and 13C peaks are also listedbelow. Provide a analysis of the NMR spectra for compound 1 include rationalisation of COSY1H NMR (400 MHz, CDCl3) δ 7.73 (d, J = 9.5 Hz, 1H), 7.56 (ddd, J = 8.5, 7.5, 1.6 Hz, 1H),7.51 (dd, J = 7.5, 1.6 Hz, 1H), 7.36 (d, J = 8.5 Hz, 1H), 7.30 (dd, J = 8.5, 7.5 Hz, 1H), 6.45(d, J = 9.5 Hz, 1H).13C NMR (101 MHz, CDCl3) δ 160.79, 154.09, 143.43, 131.85, 127.87, 124.44, 118.86,116.94, 116.74.
How many different phosphorus chemical environments are there for trans-[RhClCO(PPh3)2] and cis -[RhClCO(PPh3)2] complexes in 31P- NMR spectra?
heres the data TZ # Concentration Absorbance at 430 nmnm 1 33.6480 0.931 2 25.2360 0.757 3 16.8420 0.210 4 8.41200 0.137 5 4.20600 0.122
13C NMR of Mesityl Oxide explain
Spectra data for Unknown Z are listed below. Deduce it's structure. MS: m/z 134 (Molecular Ion) IR: 1720 (strong); 3062 (weak); 2981 (medium); 1605 (medium) 13C NMR and 1H NMR shown on a separate page.
Given the information about the unknown: Unknown: MP: 101-106 oC White solid IR: 2837, 1701, 1602, 1391, 1139 cm-1 ** Using the Reference sheet, The IR and the given H-NMR, and C-NMR. Deduce, what the unknown is.
The NMR spectra for compound 1 were acquired in a 7.5 mg / 0.6 mL solution ofCDCl3 . The 1H and 13C peaks are also listedbelow. Provide a full analysis of the NMR spectra for compound 1. correct assignment of NMR spectra of both 13C spectra. correct rationalisation of 13C spectrum1H NMR (400 MHz, CDCl3) δ 7.73 (d, J = 9.5 Hz, 1H), 7.56 (ddd, J = 8.5, 7.5, 1.6 Hz, 1H),7.51 (dd, J = 7.5, 1.6 Hz, 1H), 7.36 (d, J = 8.5 Hz, 1H), 7.30 (dd, J = 8.5, 7.5 Hz, 1H), 6.45(d, J = 9.5 Hz, 1H).13C NMR (101 MHz, CDCl3) δ 160.79, 154.09, 143.43, 131.85, 127.87, 124.44, 118.86,116.94, 116.74.Note: There are two carbon peaks in the 13C spectrum that are so close together that they are not differentiable at the resolution in this experiment. you should be able to assign these peaks to one of two carbon atoms in 1.